CA2250388C

CA2250388C - Conditioning shampoo compositions containing select hair conditioning agents

Info

Publication number: CA2250388C
Application number: CA002250388A
Authority: CA
Inventors: Timothy Woodrow Coffindaffer; Everett Junior Inman
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1996-03-27
Filing date: 1997-03-18
Publication date: 2001-12-25
Anticipated expiration: 2017-03-18
Also published as: TW423971B; CN1120703C; EP0907346B1; KR20000005026A; DE69713772D1; WO1997035546A1; ATE219923T1; BR9710948A; DE69713772T2; AU2320097A; CA2250388A1; ES2179317T3; US5935561A; EP0907346A1; JPH11507075A; CN1219870A

Abstract

Disclosed are aqueous conditioning shampoo compositions comprising an anionic detersive surfactant component; an organic, cationic, hair conditioning polymer; and from about 0.01 % to about 1.0 % by weight of a water insoluble, synthetic ester having a viscosity of from about 1 to about 300 centipoise, and which conforms to either of formulaes (I) and (II) wherein R1 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 7 to 9 carbon atoms; n is a positive integer having a value of from 2 to 4; R2 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 8 to 10 carbon atoms; and Y is an alkyl, alkenyl, hydroxy or carboxy substituted alkyl or alkenyl, having from about 2 to about 20 carbon atoms; and an organic, water insoluble, conditioning oil having a viscosity of from about 1 to about 300 centipoise, selected from the group consisting of hydrocarbon oils, fatty esters other than the above synthetic esters, and combinations thereof. The organic conditioning oil is preferably a polyolefin. The shampoo compositions provide improved hair conditioning performance, and eliminates or minimizes the slimy, excessively conditioned, wet hair feel often associated with the use of cationic hair conditioning polymers.

Description

CONDITIONING SHAMPOO COMPOSITIONS CONTAINING
SELECT HAIR CONDITIONING AGENTS
FIELD OF THE INVENTION
This invention relates to conditioning shampoo compositions which contain select combinations of hair conditioning agents, and which provide improved hair conditioning performance, including improved wet hair feel.
BACKGROUND OF THE INVENTION
Conditioning shampoos comprising various combinations of detersive surfactant and hair conditioning agents are known. These shampoos have become more popular among consumers as a means of conveniently obtaining hair conditioning and hair cleansing performance all from a single hair care product.
Especially popular among consumers are those conditioning shampoos which comprise a cationic hair conditioning polymer. The cationic polymer provides the shampoo with wet hair conditioning, and in particular helps prevent tangling of hair during and after rinsing, and ideally also should provide the wet hair with a smooth, silky texture that consumers can associate with optimal conditioning and cleaning performance. For many of these cationic polymers, however, the wet hair feel during and after rinsing is characterized by consumers as an undesirable, slimy feel rather than a more desirable, smooth, silky texture. Although consumers continue to use such products for the cleaning and conditioning benefits, they often excessively rinse their hair of the conditioning shampoo in attempts at washing away the slimy, wet hair feel of the cationic conditioning polymer.
One attempt at improving the overall conditioning performance from a conditioning shampoo involves the use of silicone conditioning agents. These conditioners provide improved hair conditioning performance, and in particular improve the softness, and clean feel of dry conditioned hair. These silicone conditioners, however, provide less than optimal wet hair conditioning. As such, cationic conditioning polymers are often combined with the silicone conditioners in a shampoo to improve wet hair conditioning.
Although wet hair conditioning is then improved by such a combination, e.g., detangling, smoother wet ' hair texture, the improvement is often accompanied by the development of the slimy, excessively conditioned wet hair feel from the added cationic conditioning polymer.

2 35 Yet another attempt at improving the overall conditioning performance from a conditioning shampoo involves the use of organic conditioning oils, examples of which include hydrocarbon oils, higher alcohols, fatty acid esters, glycerides, fatty acids and various combinations thereof. These conditioning oils provide the hair with luster, shine and a soft hair feel when dried.
Although these conditioning oils can also provide some wet hair conditioning benefits, the wet conditioned hair is often characterized as slimy or 40 excessively conditioned, especially when the conditioning oil is used in combination with a cationic conditioning polymer.
It has now been found that select combinations of certain low viscosity, organic conditioning oils and synthetic esters, when used with a cationic hair conditioning polymer, provide improved conditioning performance from an anionic surfactant shampoo composition. In particular, the composition provides 45 improved wet hair conditioning, and minimizes or eliminates the slimy, excessively conditioned wet hair feel normally associated with cationic conditioning polymers.
It has been found that, to realize these conditioning benefits, the synthetic esters must contain from 2 to 4 esterified C8 to C 10 groups, and both the synthetic ester and the organic conditioning oil must be water-insoluble and have a viscosity of from about I to about 300 centipoise as measured at 40°C. The 50 synthetic ester must also represent from about 2.5% to about 100%, by weight of the total liquid fatty ester content of the shampoo composition. It is believed that all or most of the synthetic ester and organic conditioning oil are solubilized into the surfactant micelles of the shampoo composition. It is also believed that this solubilization into the micelle, rather than mere dispersion outside the micelle as water insoluble, oil droplets, is a key factor in providing the improved conditioning performance of the shampoo 55 compositions herein.
It is therefore an object of the present invention to provide a hair conditioning shampoo composition with improved hair conditioning performance, and further to provide such a composition with improved hair conditioning performance which also contains a cationic hair conditioning polymer and an organic conditioning oil. It is a further object of the present invention to provide such compositions that 60 provides improved wet hair conditioning, and in particular minimizes or eliminates the excessively conditioned, slimy wet hair feel associated with the use of a cationic hair conditioning polymer.

The present invention is directed to hair conditioning shampoo compositions which comprise (A) from about 5% to about 50% by weight of an anionic surfactant component selected from the group consisting of anionic surfactants, zwitterionic or amphoteric surfactants having an attached group that is anionic at the pH of the composition; (B) from about 0.025% to about 3% by weight

3 70 of an organic, cationic, hair conditioning polymer; (C) from about 0.01% to about I.0% by weight of a water insoluble, synthetic ester having a viscosity of from about 1 to about 300 centipoise, and which conforms to either of the formulas O
Rt-IC-O Y
n or O

75 n wherein R~ is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 7 to 9 carbon atoms;
n is a positive integer having a value of from 2 to 4; R2 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 8 to 10 carbon atoms; and Y is an alkyl, alkenyl, hydroxy or carboxy substituted alkyl or alkenyl, having from about 2 to about 20 carbon atoms;
and (D) from about 0.025%
80 to about 3% by weight of an organic conditioning oil having a viscosity of from about 1 centipoise to about 300 centipoise and which is selected from the group consisting of hydrocarbon oils, fatty esters which do not conform to the formula of the synthetic ester component, and combinations thereof; and (E) from about 20% to about 94% by weight of water. The organic conditioning oil is preferably a polyolefin, more preferably a polyalphaolefm prepared from C2 to C20 1-alkene monomers. The shampoo compositions 85 provide improved conditioning performance, and eliminates or minimizes the slimy, excessively conditioned, wet hair feel often associated with the use of a cationic hair conditioning polymer.
DETAILED DESCRIPTION OF THE INVENTION
The shampoo compositions of the present invention can comprise, consist of, or consist essentially 90 of the essential elements and limitations of the invention described herein, as well any of the additional or optional ingredients, components, or limitations described herein.
All percentages, parts and ratios are based on the total weight of the shampoo compositions of the present invention, unless otherwise specified. All such weights as they pertain to listed ingredients are based on the active level and, therefore, do not include carriers or by-products that may be included in 95 commercially available materials, unless otherwise specified.
As used herein, the term "soluble" refers to materials that are sufficiently soluble in water to form a substantially clear solution to the naked eye at a concentration of 0.1% by weight of the material in water at 25°C. Conversely, the term "insoluble" refers to all other materials that are therefore not sufficiently soluble in water to form a substantially clear solution to the naked eye at a concentration of 0.1% by weight 100 of the other material in water at 25°C.

4 As used herein, the term "low viscosity" refers to viscosity of from about 1 to about 300 centipoise, preferably from about I to about 150 centipoise, more preferably from about 2 to about 50 centipoise. All viscosity values herein are measured at a temperature of 40°C by the ASTM D-445 method.
As used herein, "nonvolatile" refers to any material having little or no significant vapor pressure 105 under ambient conditions, and a boiling point under one atmosphere (atm) preferably at least about 250°C.
The vapor pressure under such conditions is preferably less than about 0.2 mm Hg at 25°C or less, preferably less than about 0.1 mm Hg at 25°C or less.
As used herein, the term "liquid" refers to any visibly (by the naked eye) flowable fluid under ambient conditions (about 1 atmosphere of pressure at about 25°C) 110 The shampoo compositions of the present invention, including the essential and some optional components thereof, are described in detail hereinafter.
Anionic Detersive Surfactant Component The shampoo compositions of the present invention comprise an anionic detersive surfactant component to provide cleaning performance to the composition. The anionic detersive surfactant I I S component in turn comprises anionic detersive surfactant, zwitterionic or amphoteric detersive surfactant which has an attached group that is anionic at the pH of the composition, or a combination thereof, preferably anionic detersive surfactant. Such surfactants should be physically and chemically compatible with the essential components described herein, or should not otherwise unduly impair product stability, aesthetics or performance.
120 Suitable anionic detersive surfactant components for use in the shampoo composition herein include those which are known for use in hair care or other personal care cleansing compositions. The concentration of the anionic surfactant component in the shampoo composition should be sufficient to provide the desired cleaning and lather performance, and generally range from about 5% to about 50%, preferably from about 8% to about 30%, more preferably from about 10% to about 25%, even more 125 preferably from about 12% to about 18%, by weight of the composition.
Preferred anionic surfactants suitable for use in the shampoo compositions are the alkyl and alkyl ether sulfates. These materials have the respective formulae ROS03M and RO(C2H40}xS03M, wherein R is alkyl or alkenyl of from about 8 to about 18 carbon atoms, x is an integer having a value of from 1 to (0, and M is a cation such as ammonium, alkanolamines, such as triethanolamine, monovalent metals, such I30 as sodium and potassium, and polyvalent metal canons, such as magnesium, and calcium. The canon M
should be selected such that the anionic detersive surfactant component is water soluble. Solubility of the surfactant will depend upon the particular anionic detersive surfactants and cations chosen.
Preferably, R has from about 8 to about 18 carbon atoms, more preferably from about 10 to about 16 carbon atoms, even more preferably from about 12 to about 14 carbon atoms, in both the alkyl and alkyl 135 ether sulfates. The alkyl ether sulfates are typically made as condensation products of ethylene oxide and monohydric afcohols having from about 8 to about 24 carbon atoms. The alcohols can be synthetic or thev can be derived from fats, e.g., coconut oil, palm kernel oil, tallow. Lauryi alcohol and straight chain alcohols derived from coconut oil or palm kernel oil are preferred. Such alcohols are reacted with between about 0 and about 10, preferably from about 2 to about 5, more preferably about 3, molar proportions of 1~0 ethylene oxide, and the resulting mixture of molecular species having, for example, an average of 3 moles of ethylene oxide per mole of alcohol, is sulfated and neutralized.
Specific non limiting examples of alkyl ether sulfates which may be used in the shampoo compositions of the present invention include sodium and ammonium salts of coconut alkyl triethylene glycol ether sulfate, tallow alkyl triethylene glycol ether sulfate, and tallow alkyl hexaoxyethyiene sulfate.
145 Highly preferred alkyl ether sulfates are those comprising a mixture of individual compounds, wherein the compounds in the mixture have an average alkyl chain length of from about 10 to about 16 carbon atoms and an average degree of ethoxylation of from about I to about 4 moles of ethylene oxide.
Other suitable anionic detersive surfactants are the water-soluble salts of organic, sulfuric acid reaction produce conforming to the formula [ Rl-S03-M J when RI is a straight or branched chain, 150 saturated, aliphatic hydrocarbon radical having from about 8 to about 24, preferably about 10 to about 18, carbon atoms; and M is a cation described hereinbefore. Non limiting examples of such detersive surfactants are the salts of an organic sulfuric acid reaction product of a hydrocarbon of the methane series, including iso-, neo-, and n-paraffins, having from about 8 to about 24 carbon atoms, preferably about 12 to about 18 carbon atoms and a sulfonating agent, e.g., S03, H2S04, obtained according to known sul-155 fonation methods, including bleaching and hydrolysis. Preferred are alkali metal and ammonium sulfonated C 1 ~ to C 1 g n-paraffva.
Still other suitable anioaic detersive surfactants are the reaction products of faay acids esterified with isethionic acid and neutralized with sodium hydroxide where, fx example, the fatty acids are derived from coconut oil or palm kernel oil; Sodium or potassium salts of fatty acid amides of methyl tauride in 160 which the fany acids, foe example, are derived from coconut oil or palm kernel oil. Other similar anionic surfactats ara described iti U.S. Patent 2,486,921; U. S. Patent 2,486,922;
and U.S. Pateat 2,396.278, Ot6a atuatic detersive surfactants suitable for use in the shampoo compositions are the succinnates, examples of which include disodium N-octadecylsuifosuccinnate;
disodium lauryl 165 . sulfosuccinate; diammonium lauryl sulfosuccinate; tetrasodium N-(1,2-dicarboxyethyi~N-octadecylsulfosuccinnate; diamyl ester of sodium sulfosuccinic acid; dihexyi ester of sodium sulfosuccinic acid; and dioctyl esters of sodium sulfosuccinic acid.
Other suitable anionic detersive surfactants include olefin sulfonates having about 10 to about 24 carbon atoms. In this context, the term "olefin sulfonates" refers to compounds which can be produced by 170 the sulfonation of alpha-olefins by means of uncompiexed sulfur trioxide, followed by neutralization of the acid reaction mixture in conditions such that any sulfones which have been formed in the reaction are hydrolyzed to slue the corresponding hydroxy.alkanesulfonates. The sulfur trioxide can be liquid yr gaseous, and is usually, but not necessarily, diluted by inert diluents, for example by liquid SO~.
chlorinated hydrocarbons, etc., when used in the liquid form, or by air, nitrogen, gaseous SO~, etc., when I7~ used in the gaseous form. The alpha-olefins from which the olefin sulfonates are derived are mono-olefins having from about 10 to about 24 carbon atoms, preferably from about 12 to about 15 carbon atoms.
Preferably, they are straight chain olefins. In addition to the true alkene suifonates and a proportion of hydroxy-alkanesulfonates, the olefin sulfonates can contain minor amounts of other materials, sash as alkene disulfonates depending upon the reaction conditions, proportion of reactants, the nature of the i 80 starting olefins aad impurities in the olefin stock and side reactions during the sulfonation process. A non limiting example of such an alpha-olefin sulfonate mixture is described in U.S. Patent 3,332,880, Another class of anionic detersive surfactants suitable for use in the shampoo compositions are the beta-alkyloxy alkane sulfonates. These surfactants conform to the formula Oftt H
SO~M

where R 1 is a straight chain alkyl group having froth about 6 to about 20 carbon atoms, R2 is a lower alkyl group having from about 1 to about 3 carbon atoms, preferably 1 carbon atom, aad M is a water-soluble cacion as described hercinbefore.
Preferred anionic detersive surfactants for use in the shampoo compositions include ammonium 190 lauryl sulfate, ammonium laureth sulfate, triethylamine lauryi sulfate, triethylamine Iaureth sulfate.
triethaaoiamine lauryi sulfate, triethaaotamine laureth sulfate, monoethanolamine lauryi sulfate, monodhanoiamine iataedt sulfate, diethanolamine Iauryt sulfate, diethanolamine laureth sulfate, iauric mono~ly~ride sodium sulfue, sodium lauryl sulfate, soditun laursth sulfate, potassium lauryl sulfate.
pata~iu~ lavreth suifm, sodium lauryl sarcosinate, sodium laurayi sarmsinste, lauryl sarcosine, cocoyl 195 sarcosiaa, ammoniuat cocayl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate. sodium lauroyl sulfate, potassium cocoyl sulfate, potassium lauryl sulfate, triedtanolamine lauryi sulfate, trieshanolamine lauryl sulfate, monoetltaaolamine cocoyt sulfate, monoethanoiamine lauryl sulfate, sodium tridecyl benzene suifonate, sodium dodecyl benzene sulfonate, and combinations thereof Suitable amphoteric or zwitterionic detersive surfactants for use in the shampoo composition 200 herein include those which art known for use in hair care or other persoaal care cleansing composition.
and which contain a group that is anionic at the pH of the shampoo composition. Concentration of such amphoteric detersive surfactants preferably ranges from about 4.5 % to about 20%, preferably from about 1% to about 10%, by weight of the composition. Non limiting examples of suitable zwitterionic or amphoteric surfactants are described in U.S. Patents x.104.646 (Bolich 1r. et al.), 1.'.S. Patent x,106.609 ~0~ ~ Bolich Jr. et al.), .~mphoteric detersive surfactants suitable for use in the shampoo composition are well known in the art, and include those surfactants broadly described as derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be straight or branched chain and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic water solubilizing group such as carboxy, sulfonate, sulfate, phosphate, or phosphonate.
Zwitterionic detersive surfactants suitable for use in the shampoo composition are well known in the art, and include those surfactants broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, in which the aliphatic radicals can be straight or branched chain, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one 2 I5 contains an anionic group such as carboxy, sulfonate, sulfate, phosphate or phosphonate. Zwitterionics such as betaines are preferred.
The shampoo compositions of the present invention may further comprise additional surfactants for use in combination with the anionic detersive surfactant component described hereinbeforc. Suitable optional surfactants include nonionic surfactants, cationic surfactants, and combinations thereof. Any such 220 surfactant known in the art for use in hair or personal care products may be used, provided that the optional additional surfactant is also chemically and physically compatible with the essential components of the shampoo composition, or does not otherwise unduly impair product performance, aesthetics or stability.
'the concentration of the optional additional surfactants in the shampoo composition may vary with the cleansing or lather performance desired, the optional surfactant selected, the desired product concentration, 225 the presence of otber components in the composition, and other factors well known in the art.
Non limiting examples of other anionic, zwiaerionic, amphoteric or optional additional surfactants suitable for usa in the shampoo compositions are described in l~leCut~heon~a Emuisi8en and Detereents 1989 AneuaL publis~d by M. C. Publishing Co., and U.S. Patent 3,929,578, U.S.
Patent 2,658,072; U.S.
PatentZ,43i,09t; U.S. Patent 2,528,378.

Cationic Hsir ~onditiooion Polymer The shampoo compositions of the ptrsent invention comprix an organic, cationic polymer as a hair conditioning agent. Suitable polymers are those known cationic polymers that provide conditioning benefits to hair. Such cationic polymers should also be physically and chemically compatible with the 23~ essential components dexribed herein, or should not otherwise unduly impair product stability, aesthetics or performance.
The concentration of the organic, cationic, conditioning polymer of the shampoo composition should be suffcient to provide the desired conditioning benefits. Such concentrations generally range from about 0.0'_~°o to about 3°,%, preferably from about 0.05% to about 2°~0, more preferably from about 0.1°-o to 240 about I° o, by weight of the shampoo composition.
The cationic conditioning polymer contains cationic nitrogen-containing moieties such as quaternary ammonium or cationic protonated amino moieties. The cationic protonated amines can be primary, secondary, or tertiary amines (preferably secondary or tertiary), depending upon the particular species and the selected pH of the shampoo composition. The average molecular weight of the cationic 245 conditioning polymers is between about 10 million and about 5,000, preferably at least about 100,000, more preferably at least about 200,000, but preferably not more than about 2 million, preferably not more than about 1.5 million. The polymers also have a cationic charge density ranging from about 0.2 meqlgm to about 7 meq/gm , prefetabiy at least about 0.4 meq/gm, more preferably at least about 0.6 meq/gm, but also preferably less than about 5 meqlgm, more preferably less than about 2 meqlgm, at the pH of intended 250 use of the shampoo composition, which pH will generally range from about pH 3 to about pH 9, preferably between about pH 4 and about pH 7.
Any anionic counterions can be use in association with the cationic conditioning polymers so long as the polymers remain soluble in water, in the shampoo composition, or in a coacervate phase of the shampoo composition, and so long as the countsrions are physically and chemically compatible with the 255 essential components of the shampoo composition or do not otherwise unduly impair product performance, stability or aesthetics. Non limiting examples of such counterions include halides (e.g., chlorine, fluorine, bromine, iodine sulfate and methylsulfate.
The cationic nitrogen-containing moiety of the cationic polymer is generally present as a substiment on all, or more typically on some, of the monomer units thereof. Thus, the cationic polymer for use in the 260 shampoo composition includes homopotymers, copolymers, terpoiymers, and so forth, of quaternary ammonium or catimtic amine-subsatumd monomer units, optionally in combination with non-cationic monomers referred to h~a as spacer monomers. Non limiting examples of such polymers are described in the CTFA Cod~warac Ingrad~art Dictforary, 3rd edition, edited by Estrin, Crosiey, and Haynes, (The Cosme~; Toile:ry, and Fng~rsace Associuion, Ire., Washington, D.C. ( 1982), Non limiting exaatpks of suitable cationic polymer include copolymers of vinyl monomer having cationic protonated amine or quaternary ammonium functionalities with water soluble spacer monomers such as acrylamide, methacrylamide, alkyl and diaIkyl acryiamides, alkyl and dialkyi methacryiamides.
alkyl acryiate, alkyl methacrylate, vinyl caprolactone yr vinyl pyrrolidone.
The alkyl and dialkyl 270 substituted monmners preferably have from C I to C~ alkyl groups, more preferably from C 1 to C3 alkyl groups. Other suitable spacer monomers include vinyl esttrs, vinyl alcohol (made by hydrolysis of poly-vinyl acetate), malefic anhydride, propylene glycol, and ethylene glycol.

Suitable cationic protonated amino and quaternary ammonium monomers, for inclusion in the cationic polymers of the shampoo composition herein, include vinyl compounds substituted with dialkvl-aminoaikyl acrylate. dialkylaminoalkyl methacrylate, monoalkylaminoalky!
acrylate. monoalkylaminoalkvl methacrylate, trialkyl methacryloxyaUcyl ammonium salt, trialkyl acryloxyalkyl ammonium salt, diallvl quaternary ammonium salts, and vinyl quaternary ammonium monomers having cyclic cationic nitrogen-containing rings such as pyridinium, imidazolium, and quatemized pyrrolidone, e.~., alkyl vinyl imidazolium, alkyl vinyl pyridinium, alkyl vinyl pyrroiidone salts. The alkyl portions of these monomers 280 are preferably lower alkyls such as the C 1. Co or C3 alkyls.
Suitable amine-substituted vinyl monomers for use herein include dialkylaminoalkyi acrylate, dialkylaminoalkyl methacrylate, diaikylaminoa&yl acrylamide, and dialkyiaminoalkyl methacrylamide, wherein the alkyl groups are preferably C I-C~ hydrocarbyls, more preferably C
I-C3, alkyls.
Other suitable cationic polymers for use in the shampoo composition include copolymers of 1 285 vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium salt (e.g., chloride salt) (referred to in the industry by the Cosmetic, Toiletry, and Fragrance Association, "CTFA", as Polyquaternium-16), such as those commercially available from BASF Wyandotte Corp. (Parsippany, New Jersey, U.S.A.) under the LUV1QUAT trade name (e.g., LUVIQUAT FC 370); copolymers of I-vinyl.2-pyrrofidone and dimethytaminoethyi methacrylate (referred to in the industry by CTFA as Polyquaternium-I 1 ) such as 290 those commercially available from ISP Corporation (Wayne, New Jersey, U.S.A.) under the GAFQUAT
trade name (e.g., GAFQUAT 755N); cationic diallyl quaternary ammonium.containing polymers, including, for example, dimethyldiallylammonium chloride homopolymer and copolymers of acrylamide and dimethyidiallylammonium chloride, referred to in the industry (CTFA) ss Poiyquaternium 6 and Polyquaternium 7, cespa;tively; aad mineral acid salts of amino-alkyl esters of homopolymers and 295 copolymers of unsatttratad carboxylic acids having from 3 to 5 carbon atoms, as described in U.S. Patent 4,009,236.
Odfur suitable tic poiytaen for use in the shampoo composition include polysaccharide potymera; stteh as cationic cellulose derivatives and cationic starch derivatives. Suitable cationic polyssocbaride polymers include those which conform to the formula Rt A-O-~R-(i '-RFC
RZ
wherein A is an anhydroglucose residual group> such as a starch or cellulose anhydrogiucose residual: R is an alkyiene oxyaUrylene, polyoxyalkylene, or hydroxyalkylene group, or combination thereof-, R1. R2, and R3 independently are alkyl, aryl, alkylaryi, arylalkyl, alkoxyalkyl, or alkoxyaryt groups, each group 305 containing up to about 18 carbon atoms, and the total number of carbon atoms for each cationic moie~

~ i.e.. the sum of carbon atoms in Rl. R? and R3) preferably being about 20 or less; and X is an anionic counterion as described in hereinbefore.
Preferred cationic cellulose polymers are those polymers available From Amerchol Corp. (Edison.
NJ. USA) in their Polymer JR and LR series of polymers, as salts of hydroxyethyl cellulose reacted with 310 trimethyl ammonium substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 10.
Another type of preferred cationic cellulose includes the polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 24. These materials art available from Amerchol Cocp. (Edison, NJ, USA) under the trade name Polymer LM-200.
315 Other suitable cationic polymers include cationic guar gum derivatives, such as guar hydroxypropyltrimonium chloride, specific examples of which include the Jaguar series commercially available from Celanese Corporation. Other suitable cationic polymers include quaternary nitrogen-containing cellulose ethers, some examples of which are described in U.S.
Patent 3,962.418..
Other suitable cationic polymers include 320 copolymers of etheriified cellulose, guar and starch, some examples of which are described in U.S. Patent 3,958,581.
The organic, cationic hair conditioning polymers herein are either soluble in the shampoo composition, or preferably are soluble in a complex coacervate phase in the shampoo composition formed by the cationic polymer and the anionic detersive surfactant component described hereinbefore. Complex 325 coacervates of the cationic polymer can also be formed with other optional ~ anionic components of the shampoo composition.
Coacervate formation is dependent upon a variety of criteria such as molecular weight, component concentration, and ratio of interacting ionic components, ionic strengdt (including modification of ionic stcengdt, fa example, by addition of salts charge density of the cationic and anionic components, pH, and 330 tempaat~e. Coscervate systems and the effect of these parameters have been described, for example, by 1.
Caelk~: et at., "Mionic and Cationic Compounds in Mixed Systems", Carnretics &
Toiletries, Vol. 106, Apri)1 199I, pp 49-54, C. J. van Oss, "Cascrrvation, Complex-Coaccervrvation and Flocculation", J.
Dispersion SeJUSCS cad Teafurology, Vol. 9 (5,6~ 1988-89, pp 561-573, and D.
J. Burgess, "Practical Analysis of Complex Coaarvate Systems", J ojColJoid and Iruerfxe Science, Vol.
140, No. I, November 335 1990, pp 227-238.
it is believed to be particularly advantageous for the cationic polymer to be present in the shampoo composition in a coacervate phase, or to form a coacervate phase upon application or rinsing of the shampoo to or from the hair. Complex coacervates are believed to more readily deposit on the hair. Thus.
in general, it is preferred that the cationic polymer exist in the shampoo composition as a coacervate phase 340 or form a coacervate phase upon dilution. If not already a coacervate in the shampoo composition, the cationic polymer will preferably exist in a complex coacervate form in the shampoo upon dilution with water.
Techniques for analysis of formation of complex coacervates are known in the art. For example, microscopic analyses of the shampoo compositions, at any chosen stage of dilution, can be utilized to 345 identify whether a coacervate phase has formed. Such coacervate phase will be identifiable as an additional emulsified phase in the composition. The use of dyes can aid in distinguishing the coacervate phase from other insoluble phases dispersed in the shampoo composition.
Organic Conditionins Oil The shampoo compositions of the present invention comprise a low viscosity, organic conditioning 350 oil as an additional hair conditioning agent for use in combination with the cationic hair conditioning polymer described hereinbefore. The concentration of the low viscosity oil ranges from about 0.05% to about 3%, preferably from about 0.08% to about 1.5%, more preferably from about 0.1 % to about I %, by weight of the shampoo composition.
The low viscosity, organic, conditioning oils are water insoluble, liquids selected from the group 355 consisting of hydrocarbon oils, fatty esters other than the synthetic esters described hereinafter, or combinations thereof , wherein the organic conditioning oil has a viscosity of from about 1 to about 300 centipoise, preferably from about 1 to about 150 centipoise, more preferably from about 2 to about 50 centipoise, as measured at 40°C.
It has been found that these low viscosity organic conditioning oils provide the shampoo 360 composition with improved conditioning performance when used in combination with the essential components of the composition, and in particular when used in combination with the synthetic esters described hereinafter and the cationic hair conditioning polymer described hereinbefore. Most or all of these organic conditioning oils are believed to be solubilized in the surfactant micelles of the shampoo composition. It is also believed that this solubilization into the surfactant micelles contributes to the 365 improved hair conditioning performance of the shampoo compositions herein.
Suitable organic conditioning oils for use in the shampoo composition include hydrocarbon oils having at least about 10 carbon atoms, such as cyclic hydrocarbons, straight chain aliphatic hydrocarbons (saturated or unsaturated), and branched chain aliphatic hydrocarbons (saturated or unsaturated), including polymers thereof. Straight chain hydrocarbon oils preferably contain from about 12 to about 19 carbon 370 atoms. Branched chain hydrocarbon oils, including hydrocarbon polymers, can and typically will contain more than 19 carbon atoms. Specific non limiting examples of these hydrocarbon oils include paraffin oil, mineral oil, saturated and unsaturated dodecane, saturated and unsaturated tridecane, saturated and unsaturated tetradecane, saturated and unsaturated pentadecane, saturated and unsaturated hexadecane, polybutene, polydecene, and combinations thereof. Branched-chain isomers of these compounds, as well 375 as of higher chain length hydrocarbons, can also be used, examples of which include highly branched, saturated or unsaturated, alkanes such as the permethyl-substituted isomers, e.g., the permethyl-substituted isomers of hexadecane and eicosane, such as 2, 2, 4, 4, 6, 6, 8, 8-dimethyl-10-methylundecane and 2, 2, 4, 4, 6, 6-dimethyl-8-methylnonane, sold by Permethyl Corporation. Hydrocarbon polymers such as polybutene and polydecene, especially polybutene, can also be used.
380 The organic conditioning oil for use in the shampoo composition is preferably a liquid polyolefin, more preferably a liquid polyalphaolefin, even more preferably a hydrogenated liquid polyalphaolefin.
Polyolefins for use in the shampoo composition herein are prepared by polymerization of olefenic monomers containing from about 4 to about 14 carbon atoms, preferably from about 6 to about 12 carbon atoms. Polyalphaolefins are preferred, and are prepared by polymerization of 1-alkene monomers having 38S from about 4 to about 14 carbon atoms, preferably from about 6 to about 12 carbon atoms.
Non limiting examples of olefenic monomers for use in preparing the polyolefin liquids herein include ethylene, propylene, I-butene, 1-pentene, 1-hexene, 1-octene, I-decene, 1-dodecene, 1-tetradecene, branched chain isomers such as 4-methyl-1-pentene, and combinations thereof.
Also suitable for nrenarina the polyolefin liquids are olefin-containing refinery feedstocks or effluents.
Preferred, however, are the 390 hydrogenated alpha-olefin monomers having from about 4 to about 14 carbon atoms, or combinations thereof, examples of which include I-hexene to I-hexadecenes and combinations thereof, and preferably are l-octene to 1-tetradecene or combinations thereof.
Synthetic Esters The shampoo composition of the present invention comprises select synthetic esters at 39S concentrations ranging from about 0.01% to about I.0%, preferably from about 0.05% to about O.S%, more preferably from about 0.08% to about 0.3%, by weight of the shampoo composition. These select esters provide improved wet hair feel when used in combination with the essential components of the shampoo composition herein, and in particular when used in combination with the cationic hair conditioning polymer and organic conditioning oil described hereinbefore.
400 The synthetic esters for use in the shampoo composition are water insoluble and have a viscosity of from about 1 to about 300 centipoise, preferably from about 1 to about 150 centipoise, more preferably from about 2 to about 50 centipoise. The synthetic esters conform to Formula I
O
R'- IC- Y
n or to Formula II
O

40S n wherein R~ is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 7 to 9 carbon atoms, preferably a saturated alkyl group, more preferably a saturated, linear, alkyl group; n is a positive integer having a value of from 2 to 4, preferably 3; R2 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, 410 having from 8 to 10 carbon atoms, preferably a saturated alkyl group, more preferably a saturated, linear, alkyl group; and Y is an alkyl, alkenyl, hydroxy or carboxy substituted alkyl or alkenyl, having from about 2 to about 20 carbon atoms, preferably from about 3 to about 14 carbon atoms.
It has been found that is select group of synthetic esters provide improved wet hair feel when used in combination with the essential components of the shampoo composition herein, and in particular when 415 used in combination with the cationic hair conditioning polymer and the organic conditioning oil of the shampoo composition. These synthetic esters improve wet hair feet by reducing the slimy or excessively conditioned feel of wet hair that has been conditioned by a cationic hair conditioning polymer. By application of the shampoo composition herein, cleansed and conditioned hair remains detangled and silky during and after the shampooing process, but the excessively conditioned or slimy wet hair feel undesirably 420 associated with good conditioning performance is minimized or eliminated.
Specific non limiting examples of suitable synthetic esters for use in the shampoo composition include P-43 (C8-C10 triester of trimethylolpropane), MCP-684 (tetraester of 3,3 diethanol-I,5 pentadiol), MCP 121 (C8-10 diester of adipic acid), all of which are available from Mobil Chemical Company, Edison, New Jersey, U.S.A.
425 In addition to the synthetic esters described hereinbefore, the shampoo compositions may further comprise other organic, hair conditioning oils, including fatty esters other than the select synthetic esters.
When such optional conditioning oils are added to the shampoo composition, the select synthetic ester component must still represent at least about 2.5% of the total liquid fatty ester content. The synthetic ester preferably represents from about 2.5% to about 100%, preferably from about 10%
to about 100%, more 430 preferably from about 50% to about 100%, even more preferably from about 90% to about 100%, and most preferably about 100%, of the total liquid fatty ester content of the shampoo composition. As used herein, the term "total fatty ester content" refers to the total weight percent of liquid monoesters, diesters, triesters and tetraesters in the shampoo composition.
Water 435 The shampoo compositions of the present invention are aqueous systems which comprise from about 20% to about 94%, preferably from about 50% to about 90%, more preferably from about 60% to about 85%, water by weight of the composition.
Optional Components The shampoo compositions of the present invention may further comprise one or more optional 440 components known for use in hair care or personal care products, provided that the optional components are physically and chemically compatible with the essential component described herein, or do not 1:~
otherwise unduly impair product stability, aesthetics or performance.
Concentrations of such optional components typically and individually range from about 0.001% to about 10% by weight of the shampoo compositions.
445 Non limiting examples of optional components for use in the shampoo composition include anti static agents, anti dandruff agents, dyes, organic solvents or diluents, peariescent aids, foam boosters, additional surfactants or cosurfactants (nonionic, cationic), pediculocides, pH adjusting agents, perfumes.
preservatives, proteins, skin active agents, styling polymers, sunscreens, vitamins, and viscosity adjusting agents.
450 The shampoo compositions of the present invention preferably further comprise a suspending or thickening agent. Suitable suspending agents for such materials are well known in the art, and include crystalline and polymeric suspending or thickening agents. Crystalline suspending agents are preferred, and include known acyl derivatives and amine oxides, and are described in U.S.
Patent 4,741,855 .
Optional suspending agents, especially those suspending 455 agents for use with optional silicone conditioning agents, are described in more detail hereinafter.
Non limiting examples of optional polymeric thickening agents for use in the shampoo composition include carboxyvinyl polymers, cellulose ethers, guar gtun, polyvinyl alcohol, polyvinyl pytroliidone, hydroxypropyl guar gum, starch and starch derivatives, and xantham gum. Suspending or thickening agents are described in U.S. Patent 2,798,053, U.S. Patent 4,686,254, U.S. Patent 4,788,006, and 460 U.S. Patent 5,275,761.
The shampoo compositions of the present invention also preferably comprises a silicone hair conditioning agent, more preferably a silicone hair conditioning agent in combination with an optional suspending agent for the silicone. The silicone hair conditioning agent is preferably non volatile, and is preferably present in the shampoo composition at concentrations ranging from about 0.01% to about 10%.
465 by weight of tlm s~tpoo composition. Non limiting examples of suitable silicone hair conditioning agent~.aodoQtional ding agents for the silicone, are described in U.S. Reissue Patent 34,584 (Grote et ai.~U.S. P~ 5,104,44b (l3olich Jr. et al.), U.S. Patent 5,106,609 (l3olich Jr. et al.).
The optional silicone hair conditioning agent, and optional suspending agents for the opaionai silicone, are described in more detail hereinafter.
470 Qotional Silicone Hsir Conditionin: Agent The shampoo compositions of the present invention may further comprise an optional silicone hair conditioning agent at concentrations effective to provide hair conditioning benefits. Such concentrations range from about 0.01~/e to about 10%, preferably from about 0.1% to about 8%, more preferably from about 0.1% to about 5%, most preferably from about 0.2% to about 3%, by weight of the 475 shampoo compositions.

The optional silicone hair conditioning agents are insoluble in the shampoo compositions, and are preferably nonvolatile. Typically it will be intermixed in the shampoo composition so as to be in the form of a separate, discontinuous phase of dispersed, insoluble particles, also referred to as droplets. These droplets are typically suspended with an optional suspending agent described hereinafter. The optional 480 silicone hair conditioning agent phase will comprise a silicone fluid hair conditioning agent such as a silicone fluid and can also comprise other ingredients, such as a silicone resin to improve silicone fluid deposition efficiency or enhance glossiness of the hair (especially when high refractive index (e.g. above about 1.46) silicone conditioning agents are used (e.g. highly phenylated silicones).
The optional silicone hair conditioning agent phase may comprise volatile silicone, nonvolatile 485 silicone, or combinations thereof. Typically, if volatile silicones are present, it will be incidental to their use as a solvent or carrier for commercially available forms of nonvolatile silicone materials ingredients, such as silicone gums and resins.
The optional silicone hair conditioning agents for use in the shampoo compositions preferably have a viscosity of from about 20 to about 2,000,000 centistokes, more preferably from about 1,000 to 490 about 1,800,000 centistokes, even more preferably from about 50,000 to about 1,500,000 centistokes, most preferably from about 100,000 to about 1,500,000 centistokes, as measured at 25°C .
Optional silicone fluids include silicone oils which are flowable silicone materials having a a viscosity of less than 1,000,000 centistokes, preferably between about 5 and 1,000,000 centistokes, more preferably between about 10 and about 100,000 centistokes, at 25°C.
Suitable silicone oils include 495 polyalkyl siloxanes, polyaryl siloxanes, polyalkylaryl siloxanes, polyether siloxane copolymers, and combinations thereof. Other insoluble, nonvolatile silicone fluids having hair conditioning properties can also be used.
Optional silicone oils include polyalkyl or polyaryI siloxanes which conform to the following formula (I) R R R
R-Si-O Si-O Si-R
R R R

where R is aliphatic, preferably alkyl or alkenyl, or aryl, R can be substituted or unsubstituted, and x is an integer from 1 to about 8,000. Suitable unsubstituted R groups include alkoxy, aryloxy, alkaryl, arylalkyl, arylalkenyl, alkamino, and ether-substituted, hydroxyl-substituted, and halogen-substituted aliphatic and aryl groups. Suitable R groups also include cationic amines and quaternary ammonium groups.
505 The aliphatic or aryl groups substituted on the siloxane chain may have any structure so long as the resulting silicones remain fluid at room temperature, are hydrophobic, are neither irritating, toxic nor otherwise harmful when applied to the hair, are compatible with the other components of the shampoo compositions, are chemically stable under normal use and storage conditions, are insoluble in the shampoo compositions herein, and are capable of being deposited on and conditioning the hair.
510 The two R groups on the silicon atom of each monomeric silicone unit may represent the same or different groups. Preferably, the two R groups represent the same group.
Preferred alkyl and alkenyl substituents are CI-CS alkyls and alkenyls, more preferably from Cl-C4, most preferably from C1-C2. The aliphatic portions of other alkyl-, alkenyl-, or alkynyl-containing groups (such as alkoxy, aikaryl, and alkamino) can be straight or branched chains and preferably have from 515 one to five carbon atoms, more preferably from one to four carbon atoms, even more preferably from one to three carbon atoms, most preferably from one to two carbon atoms. As discussed above, the R
substituents hereof can also contain amino functionalities, e.g. alkamino groups, which can be primary, secondary or tertiary amines or quaternary ammonium. These include mono-, di-and tri- alkylamino and alkoxyamino groups wherein the aliphatic portion chain length is preferably as described above. The R
S20 substituents can also be substituted with other groups, such as halogens (e.g. chloride, fluoride, and bromide), halogenated aliphatic or aryl groups, and hydroxy (e.g. hydroxy substituted aliphatic groups).
Suitable halogenated R groups could include, for example, tri-halogenated (preferably fluoro) alkyl groups such as -R1-C(F)3, wherein R1 is C1-C3 alkyl. Examples of such polysiloxanes include polymethyl -3,3,3 trifluoropropylsiloxane.
$2S Suitable R groups include methyl, ethyl, propyl, phenyl, methylphenyl and phenyimethyl. The pre-ferred silicones are polydimethyl siloxane, polydiethylsiloxane, and polymethylphenylsiloxane.
Polydimethylsiloxane is especially preferred. Other suitable R groups include methyl, methoxy, ethoxy, propoxy, and aryloxy. The three R groups on the end caps of the silicone may also represent the same or different groups.
S30 The nonvolatile polyalkylsiloxane fluids that may be used include, for example, polydimethylsiloxanes. These siloxanes are available, for example, from the General Electric Company in their Viscasil R and SF 96 series, and from Dow Corning in their Dow Corning 200 series.
The polyalkylaryl siloxane fluids that may be used, also include, for example, polymethylphenylsiloxanes. These siloxanes are available, for example, from the General Electric 53S Company as SF 1075 methyl phenyl fluid or from Dow Corning as 556 Cosmetic Grade Ftuid.
The polyether siioxane copolymers that may be used include, for example, a polypropylene oxide modified polydimethylsiloxane (e.g., Dow Corning DC-1248) although ethylene oxide or mixtures of ethylene oxide and propylene oxide may also be used. The ethylene oxide and polypropylene oxide concentrations must be sufficiently low to prevent solubility in water and the composition hereof.
S40 Suitable alkylamino substituted silicones include those which conform to the following structure (II) HO Si i-~~z?~
NH
~~)z NHZ
Y
wherein x and y are integers. This polymer is also known as "amodimethicone".
545 Suitable cationic silicone fluids include those which conform to the formula (II1~
(R1)aG3-a'Si-(-OSiG2)n (-OSiGb(RI)2-b)m-O-SiG3-a(R1)a , wherein G is selected from the group consisting of hydrogen, phenyl, hydroxy, C 1-Cg alkyl and preferably methyl; a is 0 or an integer having a value from I to 3, preferably 0; b is 0 or 1, preferably 1; the sum n+m is a number from I to 2,000 and preferably from 50 to 150, n being able to denote a number from 0 to 1,999 and preferably from 49 to 149 550 and m being able to denote an integer from 1 to 2,000 and preferably from 1 to 10; R1 is a monovalent radical confonming to the formula CqH2qL in which q is an integer having a value of from 2 to 8 and L is selected from the following groups:
-N(R2)CH2-CHI-N(R2)2 -N(R2)2 555 -N(RZ)3A
-N(R2)CH~-CH2-NR2H2A
in which R2 is selected from the group consisting of hydrogen, phenyl, benryl, a saturated hydrocarbon radical, preferably an alkyl radical containing from 1 to 20 carbon atoms, and A is a halide ion.
An especially preferred cationic silicone corresponding to formula (III) is the polymer known as 560 "trimethylsilyiamodimethicone", of formula (IV):
m p 18 Other silicone cationic polymers which can be used in the shampoo compositions are represented J6~ by the IorTnula (V):
Ft~CH2-CHOH-CHZ-N"(R3)s0 Rs (R3~Si- Si- Si-O Si-O-Si(R3}s R3 ~ Rs r s where R' denotes a monovalent hydrocarbon radical having from l to 18 carbon atoms, preferably an alkyl 570 or alkenyl radical such as methyl; R4 denotes a hydrocarbon radical, preferably a C1-C18 aikytene radical or a C 1-C 1 g, and more preferably C 1-Cg, alkyleneoxy radical; Q is a halide ion, preferably chloride; r denotes an average statistical value from 2 to 20, preferably from 2 to 8; s denotes an average statistical value from 20 to 200, and preferably from 20 to 50. A preferred polymer of this class is available from Union Carbide under the name "UCARE SILICONE ALE 56."
575 Other optional silicone fluids are the insoluble silicone gums. These gums are polyorganosiloxane materials having a viscosity at 2S°C of greater than or equal to 1,000,000 centistokes. Silicone gums are described in U.S. Patent 4,152,416; Noil and Walter, Chemistry and Technoloav of Silicones New York:
Academic Press 1968; and in General Electric Silicone Rubber Product Data Sheets SE 30, SE 33, SE 54 and SE 76. The silicone gums will typically have a mass 580 molecular weight in excess of about 200,000, generally between about 200,000 and about 1.000.000, specific examples of which include poiydimethylsiloxane, (polydimethylsiioxane) (methylvinylsiloxane) copolymer, poty(diimdhylsiloxane) (diphenyl siloxanexmedtylvinylsiloxane) copolymer and mixtures therao~- .
Aaodrer cstegay of nonvolatile, insoluble silicone fluid conditioning agents arc the high 585 rcfracnve indac silicone, having a refractive index of at feast about 1.46, preferably at least about 1.48, more preferably at least about 1.52, most preferably at least about l.55. The refractive index of the polysiloxane fluid will generally be fees than about 1.70, typically less than about 1.60. In this context, polysiloxane "fluid" includes oiLt as well as gums.
The high refractive index polysiloxane fluid include those represented by general Formula (I) 590 above, as well as cyclic polysiioxanes such as those represented by Formula (VI) below:

R
Si O
n R
wherein R is as defined above, n is from about 3 to about 7, preferably from 3 to 5.
The high refractive index polysiloxane fluids contain a sufficient amount of aryl-containing R
595 substituents to increase the refractive index to the desired level, which is described above. In addition, R
and n must be selected so that the material is nonvolatile, as defined above.
Aryl-containing substituents contain alicyclic and heterocyclic five and six membered aryl rings, and substituents containing fused f ve or six membered rings. The aryl rings themselves can be substituted or unsubstituted. Substituents include aliphatic substituents, and can also include alkoxy substituents, acyl 600 substituents, ketones, halogens (e.g., Cl and Br), amines, etc. Exemplary aryl-containing groups include substituted and unsubstituted arenes, such as phenyl, and phenyl derivatives such as phenyls with C 1-CS
alkyl or alkenyl substituents, e.g., allylphenyl, methyl phenyl and ethyl phenyl, vinyl phenyls such as styrenyl, and phenyl alkynes (e.g. phenyl C2-C4 alkynes). Heterocyclic aryl groups include substituents derived from furan, imidazole, pyrrole, pyridine, etc. Fused aryl ring substituents include, for example, 605 napthalene, coumarin, and purine.
In general, the high refractive index polysiloxane fluids will have a degree of aryl-containing substituents of at least about 15%, preferably at least about 20%, more preferably at least about 25%, even more preferably at least about 35%, most preferably at least about 50%.
Typically, although it is not intended to necessarily limit the invention, the degree of aryl substitution will be less than about 90%, more 610 generally less than about 85%, preferably from about 55% to about 80%.
The polysiloxane fluids are also characterized by relatively high surface tensions as a result of their aryl substitution. In general, the polysiloxane fluids hereof will have a surface tension of at least about 24 dynes/cm2, typically at least about 27 dynes/cm2. Surface tension, for purposes hereof, is measured by a de Nouy ring tensiometer according to Dow Corning Corporate Test Method CTM 0461, 615 November 23, 1971. Changes in surface tension can be measured according to the above test method or according to ASTM Method D 1331.
Preferred high refractive index polysiloxane fluids have a combination of phenyl or phenyl derivative substituents (preferably phenyl), with alkyl substituents, preferably Cl-C4 alkyl (most preferably methyl), hydroxy, Cl-C4 alkylamino (especially -RINHR2NH2 where each Rl and R2 620 independently is a C 1-C3 alkyl, alkenyl, and/or alkoxy. High refractive index polysiloxanes are available from Dow Corning Corporation (Midland, Michigan, U.S.A.) Huls America (Piscataway, New Jersey, U.S.A.), and General Electric Silicones (Waterford, New York, U.S.A.).

It is preferred to utilize high refractive index silicones in solution with a spreading agent, such as a silicone resin or a surfactant, to reduce the surface tension by a sufficient amount to enhance spreading and 625 thereby enhance glossiness (subsequent to drying) of hair treated with the composition. In general, a sufficient amount of the spreading agent to reduce the surface tension of the high refractive index polysiloxane fluid by at least about 5%, preferably at least about 10%, more preferably at least about 15%, even more preferably at least about 20%, most preferably at least about 25%.
Reductions in surface tension of the polysiloxane fluid/spreading agent mixture can provide improved shine enhancement of the 630 hair.
Also, the spreading agent will preferably reduce the surface tension by at least about 2 dynes/cm , preferably at least about 3 dynes/cm2, even more preferably at least about 4 dynes/cm2,. most preferably at least about 5 dynes/cm2.
The surface tension of the mixture of the polysiloxane fluid and the spreading agent, at the 635 proportions present in the final product, is preferably 30 dynes/cm2 or less, more preferably about 28 dynes/cm2 or less most preferably about 25 dynes/cm2 or less. Typically the surface tension will be in the range of from about 15 to about 30, more typically from about 18 to about 28, and most generally from about 20 to about 25 dynes/cm2.
The weight ratio of the highly arylated polysiloxane fluid to the spreading agent will, in general, 640 be between about 1000:1 and about I:i, preferably between about 100:1 and about 2:1, more preferably between about 50:1 and about 2:1, most preferably from about 25:1 to about 2:1. When fluorinated surfactants are used, particularly high polysiloxane: spreading agent ratios may be effective due to the efficiency of these surfactants. Thus is contemplated that ratios significantly above 1000:1 may be used.
References disclosing examples of some suitable silicone fluids for use in the shampoo 645 compositions include U.S. Patent 2,826,551, U.S. Patent 3,964,500, U.S.
Patent 4,364,837, British Patent 849,433, and Silicon Compounds, Petrarch Systems, Inc. (1984), all of which are incorporated herein by reference.
Silicone resins can be included in the silicone conditioning agent. These resins are highly crossiinked polymeric siloxane systems. The crosslinking is introduced through the incorporation of 650 trifunctional and tetrafunctional silanes with monofunctional or difunctional, or both, silanes during manufacture of the silicone resin. As is well understood in the art, the degree of crosslinking that is required in order to result in a silicone resin will vary according to the specific silane units incorporated into the silicone resin. In general, silicone materials which have a sufficient level of trifunctional and tetrafunctional siloxane monomer units (and hence, a sufficient level of crosslinking) such that they dry 655 down to a rigid, or hard, film are considered to be silicone resins. The ratio of oxygen atoms to silicon atoms is indicative of the level of crosslinking in a particular silicone material. Silicone materials which have at least about 1.1 oxygen atoms per silicon atom will generally be silicone resins herein. Preferably, '_' 1 :he ratio of oxyoenailicon atoms is at least about l.=:1Ø Silanes used in the manufacture of silicone resins include- monomethyl-, dimethyl-, trimethyl-, monophenyl-, diphenyl-, methylphenyl-, mortovinyl-, and 660 methylvinyl-chlorosilanes, and tetrachlorosilane, with the methyl-substituted silanes being most commonly utilized. Preferred resins are offered by GeneraE Electric as GE SS4230 and SS~4267. Commercially available silicone resins will generally be supplied in a dissolved form in a low viscosity volatile or nonvolatile silicone fluid. The silicone resins for use herein should be supplied and incorporated into the present compositions in such dissolved form, as will be readily apparent to those skilled in the art.
665 Background material on silicones including sections discussing silicone fluids, gums, and resins, as well as manufacture of silicones, can be found in Encyclopedia of Polymer Science and Engineering, Volume I5, Second Edition, pp 204-308, John Wiley 8c Sons, Inc., 1989.
Silicone materials and silicone resins in particular, can conveniently be identified according to a shorthand nomenclature system well known to those skilled in the art as "MDTQ"
nomenclature. Under 670 this system, the silicone is described according to presence of various siioxane monomer units which make up the silicone. Briefly, the symbol M denotes the monofunctional unit (CH3~Si0.5; D denotes the difvnctional unit (CH3Jr2Si0; T denotes the trifunctional unit (CH;)Si01.5;
and Q denotes the quadri- or tetra-functional unit Si02. Primes of the unit symbols, e.g., M', D', T, and Q' denote substituents other than methyl, and must be specifically defined for each occurrence. Typical alternate substituents include groups 675 such as vinyl, phenyls, amines, hydroxyls, etc. The molar ratios of the various units, either in terms of subscripts to the symbols indicating the total numbs of each type of unit in the silicone (or an average thereof) or as specifically indicated ratios in combination with molecular weight complete the description of the silicone material under the MDTQ system. Higher relative molar atnounts of T, Q, T andlor Q' to D, D', M andlor M' in a silicone resin is indicative of higher levels of crossiinkiag. As discussed before, 680 however, the overall level of crosslinking cart also be indicated by the oxygen to silicon ratio.
The silicxne resins for ux herein which are preferred are MQ, MT, MTQ, MDT and MDTQ
resins. 'i~a, the preferred silicone substituent is methyl. Especially preferred arc MQ resins wherein the M:Q tati~ is from abmrt 0.5:1.0 to about t .5:1.0 and the average molecular weight of the resin is from about l 000 oQ about 10,000:
685 The weight ratio of the nonvolatile silicone fluid, having refractive index below 1.46, to the silicone ruin component, when used, is preferably from about 4:l to about 400:1, preferably this ratio is from about 9:1 to about 200:1, more preferably from about 19:1 to about 100:1, particularly when the silicone fluid component is a polydimethylsiloxane fluid or a mixture of polydimedtylsiloxane fluid and polydimethylsiloxane gum as described above. insofar as the silicone resin forms a part of the same phase 690 in the compositions hereof as the silicone fluid, i.e. the conditioning active, the sum of the fluid and resin should be included in determining tire level of silicone conditioning agent in the composition.

Optional Suspendine A snt _ The shampoo compositions of the present invention may further comprise a suspending agent at concentrations effective for suspending the optional silicone hair conditioning agent, or other water 695 insoluble material, in dispersed form in the shampoo compositions. Such concentrations range from about 0.1 % to about 10%, preferably from about 0.3% to about 5.0%, by weight of the shampoo compositions.
Optional suspending agents include crystalline suspending agents which can be categorized as acyi derivatives, long chain amine oxides, and mixtures thereof, concentrations of which range from about 0.1% to about 5.0%, preferably from about 0.5°.'° to about 3.0%, by weight of the shampoo compositions.
700 These suspending agents are described in U.S. Patent 4,741,855, These preferred suspending agents include ethylene glycol esters of fatty acids preferably having from about 16 to about 23 carbon atoms. More preferred are the ethylene glycol stearates, both mono and distearate, but particularly the distearate containing less than about 7% of the mono stearate.
Other suitable suspending agents include alkanol amides of fatty acids, preferably having from about 15 to 705 about 22 carbon atoms, more preferably about 16 to 18 carbon atoms, preferred examples of which include stearic monoethanolamide, stearic diethanolamide, stearic monoisopropanolamide and stearic monoethanolamide stearate. Other long chain aryl derivatives include tong chain esters of long chain fatty acids (e.g., :teary! stearate, cetyl palmitate, ere.); glyceryl esters (e.g., glyceryl distearate) and long chain esters of long chain allcanol amides (e.g., stearamide diethanolamide distearate, stearamide 710 monoethanolamide stearate). Long chain aryl derivatives, ethylene glycol esters of long chain carboxylic acids, long chain amine oxides, and alkanol amides of long chain carboxylic acids in addition to the preferred materials listed above may be used as suspending agents. For example, it is contemplated that suspending agents wilt long chain hydrocarbyls having Cg-C22 chains may be used.
Other long chain aryl derivatives suitable for use as suspending agents iaclude N,N-dihydrocarbyl 715 amido beaxoic acid std sohrbk salts thereof (e.g., Na, K), particularly N,N-di(hydrogenated) C 16, C l g and tallow amido benzoic acid species of this family, which are commercially available from Stepan Company (Note Ulhrois, USA).
F.xampla of suitable long chain amine oxides for use as suspending agents include alkyl (C 16'C2?~ Yl amine oxide.:, e.g., :teary! dimethyl amine oxide 720 Other suitable suspending agents include xanthan gum at concentrations ranging from about 0.3%
to about 3°/,~ preferably from about 0.4% to about 1.2%, by weight of the shampoo compositions. The use of xanthan gum as a suspending agent in silicone containing shampoo compositions is described, for example, in U.S. Patent 4,?88.006, which description is incorporated herein by reference. Combinations of long chain aryl derivatives and xanthan gum may also be used as a suspending agent in the shampoo 725 compositions. Such combinations are described in U.S. Patent 4,704,272, Other suitable suspending agents include carboxyvinyl polymers. Preferred among these polymers are the copolymers of acrylic acid crosslinked with poiyaliyisucrose as described in U.S. Patent _'.'98.053. Examples of these polymers include 730 Carbopol 934, 940, 94 i, and 956. available from B. F. Goodrich Company .
Other suitable suspending agents include primary amines having a fatty alkyl moiety having at least about 16 carbon atoms, examples of which include palmitamine or stearamine, and secondary amines having two fatty alkyl moieties each having at least about 12 carbon atoms, examples of which include dipalmitoyiamine or di(hydrogenated tailow)amine. Still other suitable suspending agents include 735 di(hydrogenated tallow)phthalic acid amide, and crosslinked malefic anhydride-methyl vinyl ether copolymer.
Other suitable suspending agents may be used in the shampoo compositions, including those that can impart a gel-like viscosity to the composition, such as water soluble or colioidally water soluble polymers like cellulose ethers (e.g., methylceilulose, hydroxyburyl methylcellulose, hyroxypropylcellulose, 740 hydroxypropyl methylcellulose, hydroxyethyl ethylcellulose and hydroxyethylceilulose), guar gum, polyvinyl alcohol, polyvinyl pytrolidone, hydroxyprapyl guar gum, starch and starch derivatives, and other thickeners, viscosity modifiers, gelling agents, etc. Mixtures of these materials can also be used.
Method of Use The shampoo compositions of the present invention are used in a conventional manner for 745 cleansing and conditioning hair or skin. An effective amount of the composition for cleansing and . conditioning the hair or skin is applied to the hair or skin, that has preferably been wetted with water, and then rinsed ot~ Such effective amounts generally range from about 1 gm to about 50 gm, preferably from about 1 gal to about 20 gm. Application to the hair typically includes working the composition through the hair such that most or all of the hair is contacted with the composition.
750 This method for cleansing and conditioning the hair or skin comprises the steps of a) wetta~ the hair a skin widt water, b) applying an effective amount of the shampoo composition to the hair ae skin , and c) rinsing the applied arts: of the hair or skin with water. These steps can be repeated as many uses is desistd to achieve the desired cleansing and conditioning benefit.
Examoks 755 The shampoo compositions illustrated in l:xarnpla I-XX illustrate specific embodiments of the shampoo compositions of the present invention, but are not intended to be limiting thereof. Other modifications can be undertaken by the skilled artisan without departing from the spirit and scope of this invention. These exemplified embodiments of the shampoo compositions of the present invention provide cleansing of hair sad improved hair conditioning performance, and in particular provide improved wet hair 760 conditioning in the form of improved wet hair feel during and aRer rinsing.

The shampoo compositions illustrated in Examples I-XX are prepared by conventional formulation and mixing methods, an examples of which is set forth hereinbelow.
All exemplified amounts are listed as weight percents and exclude minor materials such as diluencs, filler, and so forth, unless otherwise specified. The listed formulations, therefore, comprise the Listed components and any minor 765 materials associated with such components.
For each of the compositions illustrated in Examples I-XX, about one-third to all of the total alkyl sulfate surfactant is added to a jacketed mix tank and heated to about 74°C with slow agitation to form a surfactant solution. Cationic polymer (Polyquat 10, cationic guar, etc.), insoluble liquid ester, organic conditioning oil, monosodium phosphate, disodium phosphate, EDTA, cocamide monoethanolamide and 770 fatty alcohol, as applicable, are added to the tank and allowed to disperse. Ethylene glycol distearate (EGDS) is then added to the mixing vessel, and melted. After the EGDS is well dispersed (usually after about 5 to 20 minutes) optional preservative are added and mixed into the surfactant solution. This mixture is passed through a heat exchanger where it is cooled to about 35°C and collected in a finishing tank. As a result of this cooling step, the ethylene glycol distearate crystallizes to fonm a crystalline network in the 775 product. The remainder of the ammonium laureth sulfate, lauryl sulfate and other ingredients including a silicone premix (described hereinafter), if applicable, are added to the finishing tank with ample agitation to insure a homogeneous mixture. A sufficient amount of the silicone premix is added to provide the desired level of dimethicone in the final product. Once all ingredients have been added, ammonium xylene sulfonate or additional sodium chloride can be added to the mixture to thin or thicken respectively to 780 achieve a desired product viscosity. Preferred viscosities range from about 3500 to about 9000 centistokes at 25°C (as measured by a Wells-Brookfield cone and plate viscometer at 2/s at 3 minutes).
When silicone hair conditioning oils are used, a silicone premix is prepared by adding 70%
dimethicone, 29% ammonium laureth-3 sulfate (solution basis, 26% active) and 1% sodium chloride, all by weight of the silicone premix, to a high shear mixing vessel and mixing for about 30 minutes or until the 785 desired silicone particle size is achieved (typically a number average particle size of from about 5 microns to about 25 microns). A conventional silicone emulsion may also be used.
Examp le Number Component I II III IV V

790 Ammonium laureth-3 sulfate1 0 1 0 12. 0 0 10. 10.0 Ammonium lauryl sulfate 10 6.0 4.0 6.0 6.0 Cocamide MEA 1.45 0.85 0.68 0.8 0.8 Polyquat 10 1 0.2 0 0.4 0 0.15 Guar hydroxypropyltrimonium 0 0.2 0 0.15 0 chloride 2 795 C8/CIO diester of adipic 0.1 0.1 0.2 0.2 0.1 acid 3 Hydrogenated Polyalpha Olefin 0.4 0.32 0.25 0.4 0.3 Cetylalcohol 0.42 0 0.42 0.6 0.42 Stearylalcohol 0.18 0 0. I 0 0, g Ethylene glycol distearate 1.5 2.0 1.5 1.5 2.0 800 Dimethicone 5 2.0 1.0 0 0 1.5 Monosodium phosphate 0.1 0.1 0.1 0 0 Disodium phosphate 0.2 0.2 0.2 0 0 EDTA 0.1 0.1 0.1 0.1 0.1 Perfume solution 0.450.45 0.6 0.6 0.6 805 DMDM hydantoin 0.370.37 0.37 0.37 0.37 Color solution (ppm) 64 64 64 64 64 Water and minors -------------q.
s.
to 100%

Example umber N

810 Component VI VII VIII IX X

Ammonium laureth-3 sulfate1 0 10 12. 0 0 10. 10.0 Ammonium lauryl sulfate 10 6.0 4.0 6.0 6.0 Cocamide MEA 0 0.85 0.68 0.0 0 Cocamide DEA 1.4 0 0 0.8 0.0 815 Polyquat 10 6 0.2 0 0.2 0.5 ~
0.15 Guar hydroxypropyltrimonium0 0.2 0 0 0 chloride 7 Trimethylolpropane caprylate0.1 0.1 0.05 0.1 0.1 caprate 8 Hydrogenated Polyalpha 0.4 0.32 0.25 0.4 0.3 Olefin 4 Cetylalcohol 0.421.5 0.42 1.5 0.42 820 Stearylalcohol 0.180 0.18 0 0.18 Ethylene glycol distearate1.5 1.5 1.5 1.5 2.0 Dimethicone 5 2.5 0.5 0 2.0 0.5 Monosodium phosphate 0.1 0.1 0.1 0.1 0 Disodium phosphate 0.2 0.2 0.2 02 0 825 EDTA 0.1 0.1 0.1 0.1 0.1 Perfume solution 0.450.45 0.6 0.6 0.6 DMDM hydantoin 0.370.37 0.37 0.37 0.37 Color solution (ppm) 64 64 64 64 64 Water and minors ------------- q.
s. to 100%

Example Number Component XI XII XIII XIV XV

Ammonium laureth-3 sulfate1 0 10 12.0 10.0 10.0 835 Ammonium lauryl sulfate 10 6.0 4.0 6.0 6.0 Cocamide MEA 0 0.85 0.68 0.0 0 Cocamide DEA 1.4 0 0 0.8 0.0 Polyquat 10 6 0.2 0 0.4 0.5 0.
t

5 Guar hydroxypropyltrimonium0 0.2 0 0 0 chloride 7 840 Trimethylolpropane caprylate0.1 0.1 0.2 0.1 0.1 caprate 8 Polyalpha olefin 9 0.4 0.32 0.25 0.4 0.3 Cetylalcohol 0.420 0.42 1.5 0.42 Stearylalcohol 0.180 0.18 0 0.18 Ethylene glycol distearate1.5 1.5 1.5 1.5 2.0 845 Dimethicone 5 2.5 0.5 0 2.0 0.5 Monosodium phosphate 0.1 0.1 0.1 0.1 0 Disodium phosphate 0.2 0.2 0.2 0.2 0 EDTA 0.1 0.1 0.1 0.1 0.1 Perfume solution 0.450.45 0.6 0.6 0.6 850 DMDM hydantoin 0.370.37 0.37 0.37 0.37 Color solution (ppm) 64 64 64 64 64 Water and minors -------------q. s. to 100%

6 PCT/US97/03693 Examp le Number 855 Component XVI XVII XVIII XIX XX

Ammonium laureth-3 sulfate10 10 12.0 10.0 10.0 Ammonium lauryl sulfate 10 6.0 4.0 6.0 6.0 Cocamide MEA 1.45 0.85 0.68 0.8 0 Polyquat 10 10 0.5 0 1.0 0 .

860 Guar hydroxypropyltrimonium0 0.4 0 0.15 .
chloride 2 0 tetra ester of 3,3-diethanol-1,5-0.2 0.25 0.15 0. 1 i pentanedioll~ .

Light mineral oil 0.2 0.4 0.8 0.1 0.3 Cetylalcohol 0.42 0 0.42 0.6 0 865 Stearylalcohol 0.18 0 0.18 0 .
0.18 Ethylene glycol distearate1.5 1.5 1.5 1.5 2.0 Dimethicone 5 2.5 0.5 0 l.0 0.5 Monosodium phosphate 0.1 0.1 0.1 0 . 0 Disodium phosphate 0.2 0.2 0.2 0 0 870 EDTA O.l 0.1 0.1 0.1 0.1 Perfume solution 0.45 0.45 0.6 0.6 0.6 DMDM hydantoin 0.37 0.37 0.3? 0.37 0.37 Color solution (ppm) 64 64 64 64 64 Water and minors -------------q. s.
to 100%

1. JR 30M available from Amerchol 2. Jaguar C-17 available from Rhone-Poulenc 3. MCP 121 available from Mobil Chemical 4. SHF 62 available from Mobil Chemical 880 5. Dimethicone is a 40(gum)/60(fluid) d of available weight ratio blen SE-76 from dimethicone General gum Electric Silicones Division and tistokes.
a dimethicone fluid having a viscosity of 350 cen 6. LR 400 available from Amerchol

7. N-Hance 3196 available from Aqualon

8. P43 available from Mobil Chemical 88$ 9. SHF 21 available from Mobil Chemical 10. JR 400 available from Amerchol I 1. MCP 684 available from Mobil Chemical

Claims

What is claimed is:

1. A conditioning shampoo composition comprising:
(A) from 5% to 50% by weight of an anionic surfactant component selected from the group consisting of anionic surfactants, zwitterionic or amphoteric surfactants having an attached group that is anionic at the pH of the composition, and combinations thereof;
(B) from 0.025% to 3% by weight of an organic, cationic, hair conditioning polymer having a catinic charge density of from 0.2 meq/gm to 7 meq/gm and an average molecularweight of from 5,000 to 10 milliion;
(C) from 0.01% to 1.0% by weight of a water insoluble, synthetic ester having a viscosity of from 1 to 300 centipoise, and which conforms to either of the following formulas:

and wherein R1 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 7 to 9 carbon atoms; n is a positive integer having a value of from 2 to 4; R2 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 8 to 10 carbon atoms; and Y is an alkyl, alkenyl, hydroxy or carboxy substituted alkyl or alkenyl, having from 2 to 20 carbon atoms;
(D) from 0.05% to 3%, preferably from 0.1% to 1%, by weight of an organic, water-insoluble, conditioning oil selected from the group consisting of hydrocarbon oils, fatty esters other than the synthetic esters of component (C), and combinations thereof, wherein the organic conditioning oil has a viscosity of from 1 to 300 centipoise, preferably from 2 to 50 centipoise; and (E) from 20% to 94% by weight of water, wherein the synthetic ester content of the composition represents from 2.5% to 100%, preferably from 90% to 100%, by weight of the total liquid fatty ester content of the composition.

2. The shampoo composition of Claim 1 wherein the synthetic ester has a viscosity of from 1 to 150 centipoise, preferably from 2 to 50 centipoise.

3. The shampoo composition of Claim 1 wherein R1 and R2 are each alkyl.

4. A conditioning shampoo composition comprising:
(A) from 5% to 50% by weight of an anionic surfactant component selected from the group consisting of anionic surfactants. Zwitterionic or amphoteric having an attached group that is anionic at the pH of the composition, and combinations thereof;
(B) from 0.025% to 3% by weight of an organic, cationic, hair conditioning polymer having a cationic charge density of from 0.2 meq/gm to 7 meq/gm, and having an average molecular weight of from 5,000 to 10 million;
(C) from 0.01% to 1.0% by weight of a water insoluble, synthetic ester having a viscosity of from 1 to 300 centipoise, and which conforms to either of the following formulas:
and wherein R1 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 7 to 9 carbon atoms; n is a positive integer having a value of from 2 to 4; R2 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group, having from 8 to 10 carbon atoms; and Y is an alkyl, alkenyl, hydroxy or carboxy substituted alkyl or alkenyl, having from 2 to 20 carbon atomsan organic subsitiuent; and (D) from 0.05% to 3%, preferably 0.08% to 1.5%, by weight of an organic, water-insoluble, polyolefin derived from l-alkene monomers having from 4 to 14 carbon atoms, wherein the polyolefin has a viscosity of from 1 to 300 centipoise, preferably from 2 to 50 centipoise; and (E) from 20% to 94% by weight of water.

5. The shampoo composition of Claim 4 wherein the polyolefin is a polyalphaolefin derived from l-alkene monomers having from 4 to 14 carbon atoms.

6. The shampoo composition of Claim 5 wherein the polyalphaolefin is hydrogenated.

7. The shampoo composition of Claim 6 wherein the hydrogenated polyalphaolefin is derived from l-alkene monomers having from 6 to 12 carbon atoms.

8. The shampoo composition of Claim 4 wherein the synthetic ester content represents from 90% to 100%
by weight of the total liquid fatty ester content of the composition.

9. The shampoo composition of Claim 6 wherein R1 and R2 are each alkyl.