CA2210893C - Preparation whose coloring depends on the viewing angle - Google Patents
Preparation whose coloring depends on the viewing angleInfo
- Publication number
- CA2210893C CA2210893C CA002210893A CA2210893A CA2210893C CA 2210893 C CA2210893 C CA 2210893C CA 002210893 A CA002210893 A CA 002210893A CA 2210893 A CA2210893 A CA 2210893A CA 2210893 C CA2210893 C CA 2210893C
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- CA
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- Prior art keywords
- pigments
- preparation
- fraction
- viewing angle
- obtainable
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0295—Liquid crystals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0254—Platelets; Flakes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/046—Aerosols; Foams
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
- A61Q1/04—Preparations containing skin colorants, e.g. pigments for lips
- A61Q1/06—Lipsticks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
- A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/12—Face or body powders for grooming, adorning or absorbing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q3/00—Manicure or pedicure preparations
- A61Q3/02—Nail coatings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/42—Colour properties
- A61K2800/43—Pigments; Dyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/42—Colour properties
- A61K2800/43—Pigments; Dyes
- A61K2800/436—Interference pigments, e.g. Iridescent, Pearlescent
Abstract
The invention relates to cosmetic or pharmaceutical preparations comprising pigments whose coloring depends on the viewing angle and comprising additives which are customary for cosmetic or pharmaceutical preparations, wherein the pigments comprise at least one oriented crosslinked substance having a liquid-crystalline structure with a chiral phase, are plateletlike in form and have a thickness of 1 - 20 µm.
Description
Docket: WA 9642-S
Paper No. 1 PREBARATIONS W808$ COLOxING DEPENDS
ON THE VIEWING ANGLE
BRIEF SUMMARY OF THE INVENTION
The present invention relates to preparations whose l0 coloring depends on the viewing angle.
BACKGROUND OF THE INVENTION
Cosmetic and/or pharmaceutical preparations, for example those for treating hair, nails and skin and con-taining pigments, are already widely known. In many cases there is a need for special-effect pigments which give the preparations a metallic colored luster and which com-prise physiologically unobjectionable colorants which are approved in cosmetics.
It is known to use platelet-shaped pigments such as the metal oxide/mica pigments described in the patents US 3 711 308 (corresponding to DE-A 19 59 998), US 3 874 890 (corresponding to DE-A-22 44 298) and US 3 926 659 (corresponding to DE-A-23 13 331). These pigments comprise thin mica flakes that are coated with iron oxide and in some cases with other metal oxides.
These mica pigments feature countless very small metal oxide crystals, deposited alongside one another on the mica surface, and therefore possess - viewed microscopi-cally - a relatively rough surface.
US 5 362 315 (corresponding to EP-A-601 483) and EP-A-686 674 disclose pigments whose color depends on the viewing angle. In EP-A-686 674, it is mentioned that these pigments are suitable, among numerous other appli-cations, for use in the cosmetics field, although further details on this are lacking.
DETAILED DESCRIPTION OF THE INVENTION
The object of the present invention was to provide cosmetic or pharmaceutical preparations which exhibit a high luster and color effects which are dependent on the viewing angle and which possess a very good feel on the skin.
The present invention provides cosmetic or pharma-ceutical preparations comprising pigments whose coloring depends on the viewing angle and also comprising the additives which are customary for cosmetic or pharmaceu-tical preparations, wherein the pigments comprise at least one oriented crosslinked substance having a liquid-crystalline structure with a chiral phase, are platelet-like in form and have a thickness of 1 - 20 ~Cm.
The pigments have a thickness of 4 - 8 ~,m, prefera-bly from 4 to 6 Vim.
The pigments have a particle diameter of 5 - 500 Vim, preferably from 10 to 100 ~Cm.
The novel preparations are environmentally friendly owing to the avoidance of pigments containing heavy metals.
The pigments present in the novel preparations are prepared as described, for example, in US 5 362 315 (corresponding to EP-A-601 483) or in EP-A-686 674, with the difference that, when the materials are comminuted to give the pigments, the above mentioned criteria in respect of form, thickness and, optionally, particle diameter are observed or the corresponding particles are selected, after having been comminuted, by means of known techniques such as, for example, classification.
The pigments are present in the novel compositions in amounts of 0.05 - 40% (w/w), preferably 0.1 - 20%
(w/w), more preferably 1 - 5% (w/w).
The pigments used in accordance with the invention preferably consist of polyorganosiloxanes.
It has been found that the novel preparations pos-sess high gloss, diverse color effects which have depth and are, in particular, dependent on the viewing angle, and also, quite unexpectedly, a very good feel on the skin and pronounced absorption in the UV region. The novel formulations are easier to prepare than known cos metic or pharmaceutical preparations, since the pigments whose coloring depends on the viewing angle are incorpo rated more readily into the respective formulations than are the customary pigments.
The novel preparations can be prepared by means of known and customary techniques. The pigments specified can be incorporated in a customary manner.
The novel compositions may, for example, comprise preparations for the treatment of skin, nails and hair.
Examples are emulsions, such as cleansing emulsions, liquid nutrient creams, body lotions, sun protection products and bathing lotion, creams, for instance solid creams in the manner of a night cream, skin nutrient creams, sunscreen creams and the like, and also sticks, such as deodorant sticks, lipsticks and eye makeup sticks. The materials used are known to the skilled worker or can be found in standard works.
Examples of additives which may be present in the compositions are animal, mineral, vegetable or synthetic oils, waxes or resins, wetting agents, fatty alcohols, emulsifiers, sunscreens, organic solvents, thickeners, dyes, pigments, pH regulators, reducing agents, electro-lytes, opacifying additives, preservatives, antioxidants, ion exchangers, fragrances, antiseborrheic agents and active substances which may serve to treat, care for and protect the skin or hair, and also water.
The nature and quantity of the additives depend on the particular field of application and are known in the area of cosmetology.
As coloring constituents the novel preparations always comprise at least one of the above mentioned platelet-shaped pigments whose coloring depends on the viewing angle. In addition, however, it is possible to mix in further pigments, it being possible to use both organic and inorganic absorption color pigments, silvery luster pigments, for example bismuth oxychloride, pearl essence or titanium dioxide-coated mica or interference color luster pigments based on mica flakes coated with metal oxides, especially Ti02.
Highly appealing color effects are obtained by com-bining interference color pigments or metal luster pig-s ments: consequently, such pigments are preferably present in the novel preparation.
The present invention therefore provides novel cos-metic preparations having attractive color effects and a very pleasant feel on the skin.
In the examples below, all parts and percentages are by weight unless stated otherwise. Furthermore, all vis-cosities relate to a temperature of 25°C. Unless stated otherwise, the examples which follow were conducted at the pressure of the surrounding atmosphere, i.e. at about 1000 hPa, and at room temperature, i.e. at about 20'C, or at the temperature which is established when the reac-tants are combined at room temperature without additional heating or cooling.
The novel formulations were prepared in accordance with methods customary in the cosmetics industry and using common raw materials.
The formulation samples were assessed by two or three individuals, the appearance and application being assessed subjectively.
Example 1: Face powder 70.00% of talc, 6.00% of magnesium stearate and 3.00% of acrylic polymer obtainable from Goodrich under the designation Carbopol 1342 were mixed, and 12.00% of a highly volatile cyclic polydimethylsiloxane obtainable commercially from blacker-Chemie, Munich, under the desig-nation blacker-Belsil CM 040, and 2.00% of protein hydro-lysate, obtainable commercially from Griinau under the designation Nutrilan L, were mixed in in portions. Then 0.20% of methylparaben, 1.90% of talc, 0.90% of color pigments consisting of 2 parts of Tudor Mahogany, 4 parts of Tudor Aspen, 3 parts of Tudor Rosewood, 6 parts of Tudor Willow, obtainable from Croda Nettetal: and 4.00%
of platelet-shaped pigments whose coloring depends on the viewing angle were then mixed in, and all of the compo-nents were mixed homogeneously.
The platelet-shaped pigments whose coloring depends on the viewing angle were prepared as described in Exam ple 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~m and that the pigment fraction used was obtained by milling for four minutes in a universal mill and then by screening with an analytical sieve having a mesh size of 50 Vim.
It is possible optionally to add fragrances in an amount of from 0.1% to 1% (obtainable, for example, from Orissa Drebing, Hamburg).
The face powder produces a slightly glistening bronze effect on the skin with a pronounced color shading changing from red to green and a very good feel on the skin.
Example 2: Mascara Fraction A) 5.00% of a waxlike siloxane containing stearyl groups, obtainable under the designation Wacker-Belsil SM 6018 from Wacker-Chemie, Munich 4.00% of a polydimethylsiloxane containing phenyl groups, obtainable under the designation Wacker-Belsil PDM 200 from Wacker-Chemie, Munich 5.00% of cetyl alcohol 7.00% of stearic acid 3.50% of vaseline 4.50% of thick liquid paraffin.
Fraction B) 0.90% of triethanolamine 65.10% of water Fraction C) 3.00% of pigment colorant, for example Tudor Ebony from BASF
Fraction D) 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 10 to 70 Vim) The platelet-shaped pigments whose coloring depends on the viewing angle were prepared as described in Exam-ple 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~m and that the pigment fraction used was obtained by milling for four minutes in a universal mill and then by screening with an analytical sieve having a mesh size of 66 ~Cm.
Fraction A was melted at 60'C, Fraction B was mixed in with rapid stirring, and then Fraction C was incor-porated homogeneously and Fraction D was mixed in subse-quently.
The mascara was creamy and black with a greenish shimmer and a color flop from green to blue.
Example 3: Mascara The mascara was prepared as described in Example 2 with the exception that different platelet-shaped pig-ments whose coloring depends on the viewing angle were used, in a concentration of 3% instead of 2%.
The platelet-shaped pigments used in this example, whose coloring depends on the viewing angle, were pre-pared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 um, and the pigment fraction used was obtained by milling for four minutes in a universal mill and then screening with an analytical sieve having a mesh size of 66 ~cm.
The mascara was creamy and black with a red-gold shimmer and a color flop to green which was more pro-nounced than the color flop described in Example 2.
Example 4: Lipstick 2.00% beeswax 6.00% carnauba wax 5.50% of candelilla wax 6.50% of ozokerite 1.50% of microcrystalline wax 5.50% of thick liquid paraffin 3.00% of vaseline 5.00% of a waxlike siloxane containing stearyl groups, obtainable under the designation blacker-Belsil SM 6018 from blacker-Chemie, Munich 15.00% of lanolin oil obtainable from Grunau under the designation Fluilan 35.00% of castor oil 5.00% of superfatting agent obtainable, for example, from Goldschmidt under the designation Tegosoft 189 3.00% of a polydimethylsiloxane containing phenyl groups, obtainable under the designation blacker-Belsil PDM 1000 from blacker-Chemie, Munich 4.00% of color pigment obtainable from BASF under the designation Sicomet Red 30 3.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 8 - 30 Vim).
The platelet-shaped pigments used in this example, with their coloring dependent on the viewing angle, were prepared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 Vim, and the pigment fraction used was obtained by milling for seven minutes in a universal mill and then screening with an analytical sieve having a mesh size of Vim.
All of the components were mixed and melted 25 together.
The lipstick glistens slightly and on the skin gives moderate color effects with a color flop from red to gold.
Example 5: Lipstick The lipstick was prepared as described in Example 4 with the difference that the color pigment used was Sicomet Red 15850 Ca, obtainable from BASF, and that dif-ferent platelet-shaped pigments whose coloring depends on the viewing angle were used.
The platelet-shaped pigments used in this example, with their coloring dependent on the viewing angle, were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 ~Cm, and the pigment fraction used was obtained by milling for seven minutes in a universal mill and then screening with an analytical sieve having a mesh size of 25 Vim.
The lipstick has a greenish shimmer and on the skin gives moderate color effects with a color flop from orange to lilac.
Example 6: Hair gel Fraction A):
1.20% of acrylamide/acrylate copolymer obtainable from Hoechst under the designation Hostacerin PN 73 1.20% of polyvinylpyrrolidone obtainable, for exam-ple, from BASF under the designation Luviskol VA 64 Fraction B):
20.00% of isopropanol 2.00% of polydimethylsiloxane containing phenyl groups, obtainable under the designation Wacker-Belsil PDM 20 from Wacker-Chemie, Munich 71.60% of water Fraction C) 4.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter The platelet-shaped pigments used in this case whose 25 coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674, the layer thick-ness being 5 ~,m instead of 7 ~,m and the pigment fraction used being obtained by milling for three minutes in a universal mill and then screening with an analytical 30 sieve having a mesh size of 100 ~cm and screening the resulting sieve fraction with a second analytical sieve having a mesh size of 32 Vim, as oversize.
Fraction B was mixed, Fraction A was slowly mixed into Fraction B, and then Fraction C was mixed in.
The hair gel has a greenish shimmer in the glass container and on the skin and in black hair provides strong effects with a color flop from green to blue; in light-colored hair, the effects are somewhat more moder-ate.
Example 7: Self-foaming lotion Fraction A) 81.50% of water 1.00% of acrylic acid polymer, obtainable for example from B.F. Goodrich under the designation Carbopol 934 2.50% of vinyl acetate/ethylene copolymer, under the designation Vinnapas RE 526-Z from blacker-Chemie, Munich Fraction B) 1.00% of triethanolamine Fraction C) 2.50% of sodium lauryl sulfate, obtainable for exam-ple under the designation Texapon N 40 from Henkel, Dusseldorf 9.00% of low-viscosity volatile polydimethylsilox ane, obtainable under the designation blacker-Belsil DM 0.65 from blacker-Chemie, Munich 0.50% of glucose-functional polydimethylsiloxane obtainable under the designation SPG 121 VP from blacker-Chemie, Munich 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 20 to 260 Vim).
The platelet-shaped pigments used, whose coloring depends on the viewing angle, were prepared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 Vim, and the pig-ment fraction used was obtained by milling for two min-utes in a universal mill and then screening with an ana-lytical sieve having a mesh size of 250 Vim.
Fraction A was mixed thoroughly until a homogeneous solution had formed, which was then neutralized with Fraction B, and Fraction C was mixed in.
The self-foaming lotion is highly glistening and, on the skin, exhibits a particularly strongly pronounced red-green color flop effect.
Example 8: Sunscreen lotion Fraction A) 6.00% of emulsifier mixture obtainable commercially, for example, under the designation Teginacid from Goldschmidt 1.00% of isopropyl myristate 1.00% of polydimethylsiloxane obtainable under the designation blacker-Belsil DM 350 from blacker-Chemie, Munich 4.00% of thin liquid paraffin 1.00% of cetyl stearyl alcohol, obtainable for exam-ple under the designation Lanette O from Henkel, Dusseldorf Fraction B) 10.00% of a combination of a highly viscous poly dimethylsilicone rubber with highly volatile cyclic polydimethylsiloxanes, obtainable under the designa-tion blacker-Belsil CM 1000 from blacker-Chemie, Munich 2.00% of W absorber, obtainable for example from Givaudan-Roure under the designation Parsol MCX
Fraction C) 71.50% of water 1.50% of glycerol Fraction D) 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle size l0-55 Vim) .
The platelet-shaped pigments used here, whose color-ing depends on the viewing angle, were prepared as des-cribed in Example 4 B of EP-A-686 674, with the differ-ence that, the pigment fraction used was obtained by milling for five minutes in a universal mill and then screening with an analytical sieve having a mesh size of 5 0 ~,~tm .
Fraction A and Fraction C were each heated to 65 -70'C. Fraction C was stirred into Fraction A, and then Fraction B was mixed in at about 40'C. Fraction D was incorporated homogeneously into the finished formulation.
The sunscreen lotion shows moderate color effects on skin with a color flop from green to blue.
Example 9: Sunscreen stick Fraction A) 67.00% of vaseline 25.00% of stearoxy-functional waxlike polydimethyl siloxane, obtainable under the designation Wacker-Belsil SDM 6022 from Wacker-Chemie, Munich Fraction B) 4.00% of W absorber obtainable, for example, under the designation Parsol MCX from Givaudan-Roure 4.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 10 to 55 ~Cm) .
The platelet-shaped pigments used, whose coloring depends on the viewing angle, were prepared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~cm, and the pig-ment fraction used was obtained by milling for five min-utes in a universal mill and then screening with an ana-lytical sieve having a mesh size of 50 Vim.
Fraction A was heated to about 60'C and mixed thor-oughly, and Fraction B was mixed in at about 40'C. The mixture was then introduced into the mold.
The sunscreen stick shows attractive bronze effects on the skin with a color flop from red to green. In the region of UV-C (200-230 nm) and UV-B (290-330 nm) radia-tion, increased absorption was found in comparison to the formulation without platelet-shaped pigments whose color-ing depends on the viewing angle.
Example 10: Sunscreen stick Fraction A) 62.00% of vaseline 30.00% of stearoxy-functional waxlike polydimethyl siloxane, obtainable under the designation Wacker-Belsil SDM 6022 from blacker-Chemie, Munich Fraction B) 4.00% of W absorber obtainable, for example, under the designation Parsol MCX from Givaudan-Roure 4.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 10 to 50 ~Cm) .
The platelet-shaped pigments used, whose coloring depends on the viewing angle, were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~,m instead of 7 Vim, and the pig-ment fraction used was obtained by milling for five min-utes in a universal mill and then screening with an ana-lytical sieve having a mesh size of 50 Vim.
Fraction A was heated to about 60'C and mixed thor-oughly and then cooled, and Fraction B was mixed in at about 40°C. The mixture was then introduced into the mold.
The sunscreen stick is a soft stick which in the packaging has a slight greenish shimmer and on the skin shows a color flop to blue. It is ideal as a lipcare stick with sunscreen.
Example 11: Colorless nail varnish Fraction A) 18.00% of nitrocellulose, obtainable commercially, for example, from ICI, Frankfurt 4.00% of silsesquioxane containing phenyl groups, obtainable from blacker-Chemie, Munich under the designation Intermediate SY 430, 11.00% of xylene 5.00% of methyl ethyl ketone 22.00% of ethyl acetate 22.00% of butyl acetate Fraction B) 2.00% of camphor 3.00% of butyl glycolate 1.00% of diisopropyl adipate, obtainable commer-cially, for example, from Dragoco, Holzminden under the designation Isoadipat 8.00% of ethanol 2.00% of dibutyl phthalate Fraction C) 2.00% of platelet-shaped pigments whose coloring depends one the viewing angle (particle diameter 100 to 260 nm).
The platelet-shaped pigments used whose coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~cm, and the pig-ment fraction used was obtained by milling for two min-utes in a universal mill and then screening using an ana-lytical sieve having a mesh size of 250 ~cm and then a second screening of the sieved material through an ana-lytical sieve having a mesh size of 100 ~cm, as oversize.
Fraction A was mixed thoroughly and stirred until a homogeneous mixture had formed. Fraction B was mixed in homogeneously and then Fraction C was added.
The colorless nail varnish gives attractive color effects with a color flop from green to blue, which is intensified further when it is applied over a dark under varnish.
Example 12: Eyeshadow compact powder Fraction A) 20.00% of talc 25.00% of kaolin 5.00% of titanium dioxide 10.00% of calcium carbonate 5.00% of magnesium stearate 5.00% of boron nitride, obtainable under the desig-nation blacker Bornitrid BNP from blacker-Chemie, Munich 12.50% of zinc stearate Fraction B) 3.50% of isopropyl myristate 4.00% of oleyl oleate, obtainable for example under the designation Cetiol from Henkel, Dusseldorf Fraction C) 5.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 5-35~tm) 5.00% of pigment dye obtainable, for example, under the designation Cloisonne Blue 650 Z from Mearl The platelet-shaped pigments used whose coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674 with the difference that the layer thickness is 5 ~cm instead of 7 Vim, and the pigment fraction used was obtained by milling for seven minutes in a universal mill and then screening using an analyti-cal sieve having a mesh size of 32 ~cm.
Mix Fraction A thoroughly, heat Fraction B and mix it in portions, mix in Fraction C and homogenize the mix-ture well, and then press it to form small blocks.
The eyeshadow compact powder is a lilac powder with a slightly greenish shimmer and a color flop to blue.
Example 13: Shower gel 22.50% of alkylamidopropylbetain, obtainable for example from Hoechst under the designation Genagen CAB
53.50% of water 22.50% of ammonium lauryl ether sulfate, obtainable for example from Henkel, Dusseldorf under the designation Texapon NA
1.00% of polyether-modified polydimethylsiloxane, obtain-able from blacker-Chemie under the designation Wacker-Belsil DMC 6038 0.50% of ammonium chloride 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 50 to 260 Vim) The platelet-shaped pigments used whose coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 hem, and the pig-ment fraction used was obtained by milling for three min-utes in a universal mill and then screening using an ana-lytical sieve having a mesh size of 250 ~m and then a second screening of the sieved material through an ana-lytical sieve having a mesh size of 50 Vim, as oversize.
All of the components were mixed in the sequence given.
The shower gel has a marked greenish shimmer and shows a strong color flop to blue.
Example 14: Shower gel The shower gel was prepared as described in Exam-ple 13 with the difference that 0.2% of platelet-shaped pigments whose coloring depends on the viewing angle were employed.
In comparison with the shower gel from Example 13, the shower gel has a less pronounced greenish shimmer and showed a highly moderate color flop to blue.
Example 15: Body gel Fraction A) 0.40% of an acrylic acid polymer obtainable com-mercially, for example, from B.F. Goodrich under the designation Carbopol 94, 64.70% of water.
Fraction B) 0.80% of a polyether-modified polydimethylsiloxane, obtainable commercially from blacker-Chemie, Munich under the designation blacker-Belsil DMC 6031 Fraction C) 33.00% of ethanol Fraction D) 0.30% of triethanolamine Fraction E) 0.05% of pigments whose coloring depends on the viewing angle, as used in Example 10.
Fraction A was mixed thoroughly and heated to 75'C, Fraction B was mixed in, and the mixture was stirred thoroughly. After cooling to about 45°C, Fraction C and then Fraction D were mixed in.
The body gel had a greenish blue shimmer. It is out-standingly suitable as a gel base for medical gels.
Example 16: Ointment base Fraction A) 9.00% of cetyl stearyl alcohol, obtainable for exam-ple from Henkel, Dusseldorf under the designation Lanette O
10.50% of thick liquid paraffin 10.50% of white vaseline 1.00% of polydimethylsiloxane with a viscosity of 350 mm2/s, obtainable from blacker-Chemie, Munich under the designation Pharsil 350 Fraction B) 68.00% of water Fraction C) 1.00% of pigments whose coloring depends on the viewing angle, as used in Example 10.
Fraction A was heated to about 65-70°C. Fraction B
was heated and mixed into Fraction A, and the mixture was homogenized thoroughly. Then Fraction C was mixed in homogeneously.
The resulting ointment base had a greenish blue shimmer and was used as a creamy base for the incorpora-tion of pharmaceutical active substances with an appeal-ing appearance and an outstanding feel on the skin.
Example 17: Toothpaste 19.00% of water were introduced and 0.50% of sodium car-boxymethylcellulose, obtainable for example from Hoechst under the designation Tylose CB 200, and also 5.70% of highly disperse silicic acid, obtainable under the desig-nation HDK N 20 P from blacker-Chemie, Munich, were added with stirring.
4.30% of polyethylene glycol 400, 17.00% of 70% sorbitol solution and 50.00% of glycerol were stirred in. 4.00% of pigment whose coloring depends on the viewing angle, as used in Example il, 2.50% of sodium lauryl sulfate, obtainable for example under the designation Texapon K
1296 from Henkel, Dusseldorf were mixed in carefully.
. CA 02210893 1997-07-21 During this addition, severe foaming was avoided. The finished formulation was evacuated for a short time.
A transparent toothpaste was obtained with an inter-esting play of color from green to blue.
Paper No. 1 PREBARATIONS W808$ COLOxING DEPENDS
ON THE VIEWING ANGLE
BRIEF SUMMARY OF THE INVENTION
The present invention relates to preparations whose l0 coloring depends on the viewing angle.
BACKGROUND OF THE INVENTION
Cosmetic and/or pharmaceutical preparations, for example those for treating hair, nails and skin and con-taining pigments, are already widely known. In many cases there is a need for special-effect pigments which give the preparations a metallic colored luster and which com-prise physiologically unobjectionable colorants which are approved in cosmetics.
It is known to use platelet-shaped pigments such as the metal oxide/mica pigments described in the patents US 3 711 308 (corresponding to DE-A 19 59 998), US 3 874 890 (corresponding to DE-A-22 44 298) and US 3 926 659 (corresponding to DE-A-23 13 331). These pigments comprise thin mica flakes that are coated with iron oxide and in some cases with other metal oxides.
These mica pigments feature countless very small metal oxide crystals, deposited alongside one another on the mica surface, and therefore possess - viewed microscopi-cally - a relatively rough surface.
US 5 362 315 (corresponding to EP-A-601 483) and EP-A-686 674 disclose pigments whose color depends on the viewing angle. In EP-A-686 674, it is mentioned that these pigments are suitable, among numerous other appli-cations, for use in the cosmetics field, although further details on this are lacking.
DETAILED DESCRIPTION OF THE INVENTION
The object of the present invention was to provide cosmetic or pharmaceutical preparations which exhibit a high luster and color effects which are dependent on the viewing angle and which possess a very good feel on the skin.
The present invention provides cosmetic or pharma-ceutical preparations comprising pigments whose coloring depends on the viewing angle and also comprising the additives which are customary for cosmetic or pharmaceu-tical preparations, wherein the pigments comprise at least one oriented crosslinked substance having a liquid-crystalline structure with a chiral phase, are platelet-like in form and have a thickness of 1 - 20 ~Cm.
The pigments have a thickness of 4 - 8 ~,m, prefera-bly from 4 to 6 Vim.
The pigments have a particle diameter of 5 - 500 Vim, preferably from 10 to 100 ~Cm.
The novel preparations are environmentally friendly owing to the avoidance of pigments containing heavy metals.
The pigments present in the novel preparations are prepared as described, for example, in US 5 362 315 (corresponding to EP-A-601 483) or in EP-A-686 674, with the difference that, when the materials are comminuted to give the pigments, the above mentioned criteria in respect of form, thickness and, optionally, particle diameter are observed or the corresponding particles are selected, after having been comminuted, by means of known techniques such as, for example, classification.
The pigments are present in the novel compositions in amounts of 0.05 - 40% (w/w), preferably 0.1 - 20%
(w/w), more preferably 1 - 5% (w/w).
The pigments used in accordance with the invention preferably consist of polyorganosiloxanes.
It has been found that the novel preparations pos-sess high gloss, diverse color effects which have depth and are, in particular, dependent on the viewing angle, and also, quite unexpectedly, a very good feel on the skin and pronounced absorption in the UV region. The novel formulations are easier to prepare than known cos metic or pharmaceutical preparations, since the pigments whose coloring depends on the viewing angle are incorpo rated more readily into the respective formulations than are the customary pigments.
The novel preparations can be prepared by means of known and customary techniques. The pigments specified can be incorporated in a customary manner.
The novel compositions may, for example, comprise preparations for the treatment of skin, nails and hair.
Examples are emulsions, such as cleansing emulsions, liquid nutrient creams, body lotions, sun protection products and bathing lotion, creams, for instance solid creams in the manner of a night cream, skin nutrient creams, sunscreen creams and the like, and also sticks, such as deodorant sticks, lipsticks and eye makeup sticks. The materials used are known to the skilled worker or can be found in standard works.
Examples of additives which may be present in the compositions are animal, mineral, vegetable or synthetic oils, waxes or resins, wetting agents, fatty alcohols, emulsifiers, sunscreens, organic solvents, thickeners, dyes, pigments, pH regulators, reducing agents, electro-lytes, opacifying additives, preservatives, antioxidants, ion exchangers, fragrances, antiseborrheic agents and active substances which may serve to treat, care for and protect the skin or hair, and also water.
The nature and quantity of the additives depend on the particular field of application and are known in the area of cosmetology.
As coloring constituents the novel preparations always comprise at least one of the above mentioned platelet-shaped pigments whose coloring depends on the viewing angle. In addition, however, it is possible to mix in further pigments, it being possible to use both organic and inorganic absorption color pigments, silvery luster pigments, for example bismuth oxychloride, pearl essence or titanium dioxide-coated mica or interference color luster pigments based on mica flakes coated with metal oxides, especially Ti02.
Highly appealing color effects are obtained by com-bining interference color pigments or metal luster pig-s ments: consequently, such pigments are preferably present in the novel preparation.
The present invention therefore provides novel cos-metic preparations having attractive color effects and a very pleasant feel on the skin.
In the examples below, all parts and percentages are by weight unless stated otherwise. Furthermore, all vis-cosities relate to a temperature of 25°C. Unless stated otherwise, the examples which follow were conducted at the pressure of the surrounding atmosphere, i.e. at about 1000 hPa, and at room temperature, i.e. at about 20'C, or at the temperature which is established when the reac-tants are combined at room temperature without additional heating or cooling.
The novel formulations were prepared in accordance with methods customary in the cosmetics industry and using common raw materials.
The formulation samples were assessed by two or three individuals, the appearance and application being assessed subjectively.
Example 1: Face powder 70.00% of talc, 6.00% of magnesium stearate and 3.00% of acrylic polymer obtainable from Goodrich under the designation Carbopol 1342 were mixed, and 12.00% of a highly volatile cyclic polydimethylsiloxane obtainable commercially from blacker-Chemie, Munich, under the desig-nation blacker-Belsil CM 040, and 2.00% of protein hydro-lysate, obtainable commercially from Griinau under the designation Nutrilan L, were mixed in in portions. Then 0.20% of methylparaben, 1.90% of talc, 0.90% of color pigments consisting of 2 parts of Tudor Mahogany, 4 parts of Tudor Aspen, 3 parts of Tudor Rosewood, 6 parts of Tudor Willow, obtainable from Croda Nettetal: and 4.00%
of platelet-shaped pigments whose coloring depends on the viewing angle were then mixed in, and all of the compo-nents were mixed homogeneously.
The platelet-shaped pigments whose coloring depends on the viewing angle were prepared as described in Exam ple 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~m and that the pigment fraction used was obtained by milling for four minutes in a universal mill and then by screening with an analytical sieve having a mesh size of 50 Vim.
It is possible optionally to add fragrances in an amount of from 0.1% to 1% (obtainable, for example, from Orissa Drebing, Hamburg).
The face powder produces a slightly glistening bronze effect on the skin with a pronounced color shading changing from red to green and a very good feel on the skin.
Example 2: Mascara Fraction A) 5.00% of a waxlike siloxane containing stearyl groups, obtainable under the designation Wacker-Belsil SM 6018 from Wacker-Chemie, Munich 4.00% of a polydimethylsiloxane containing phenyl groups, obtainable under the designation Wacker-Belsil PDM 200 from Wacker-Chemie, Munich 5.00% of cetyl alcohol 7.00% of stearic acid 3.50% of vaseline 4.50% of thick liquid paraffin.
Fraction B) 0.90% of triethanolamine 65.10% of water Fraction C) 3.00% of pigment colorant, for example Tudor Ebony from BASF
Fraction D) 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 10 to 70 Vim) The platelet-shaped pigments whose coloring depends on the viewing angle were prepared as described in Exam-ple 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~m and that the pigment fraction used was obtained by milling for four minutes in a universal mill and then by screening with an analytical sieve having a mesh size of 66 ~Cm.
Fraction A was melted at 60'C, Fraction B was mixed in with rapid stirring, and then Fraction C was incor-porated homogeneously and Fraction D was mixed in subse-quently.
The mascara was creamy and black with a greenish shimmer and a color flop from green to blue.
Example 3: Mascara The mascara was prepared as described in Example 2 with the exception that different platelet-shaped pig-ments whose coloring depends on the viewing angle were used, in a concentration of 3% instead of 2%.
The platelet-shaped pigments used in this example, whose coloring depends on the viewing angle, were pre-pared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 um, and the pigment fraction used was obtained by milling for four minutes in a universal mill and then screening with an analytical sieve having a mesh size of 66 ~cm.
The mascara was creamy and black with a red-gold shimmer and a color flop to green which was more pro-nounced than the color flop described in Example 2.
Example 4: Lipstick 2.00% beeswax 6.00% carnauba wax 5.50% of candelilla wax 6.50% of ozokerite 1.50% of microcrystalline wax 5.50% of thick liquid paraffin 3.00% of vaseline 5.00% of a waxlike siloxane containing stearyl groups, obtainable under the designation blacker-Belsil SM 6018 from blacker-Chemie, Munich 15.00% of lanolin oil obtainable from Grunau under the designation Fluilan 35.00% of castor oil 5.00% of superfatting agent obtainable, for example, from Goldschmidt under the designation Tegosoft 189 3.00% of a polydimethylsiloxane containing phenyl groups, obtainable under the designation blacker-Belsil PDM 1000 from blacker-Chemie, Munich 4.00% of color pigment obtainable from BASF under the designation Sicomet Red 30 3.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 8 - 30 Vim).
The platelet-shaped pigments used in this example, with their coloring dependent on the viewing angle, were prepared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 Vim, and the pigment fraction used was obtained by milling for seven minutes in a universal mill and then screening with an analytical sieve having a mesh size of Vim.
All of the components were mixed and melted 25 together.
The lipstick glistens slightly and on the skin gives moderate color effects with a color flop from red to gold.
Example 5: Lipstick The lipstick was prepared as described in Example 4 with the difference that the color pigment used was Sicomet Red 15850 Ca, obtainable from BASF, and that dif-ferent platelet-shaped pigments whose coloring depends on the viewing angle were used.
The platelet-shaped pigments used in this example, with their coloring dependent on the viewing angle, were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 ~Cm, and the pigment fraction used was obtained by milling for seven minutes in a universal mill and then screening with an analytical sieve having a mesh size of 25 Vim.
The lipstick has a greenish shimmer and on the skin gives moderate color effects with a color flop from orange to lilac.
Example 6: Hair gel Fraction A):
1.20% of acrylamide/acrylate copolymer obtainable from Hoechst under the designation Hostacerin PN 73 1.20% of polyvinylpyrrolidone obtainable, for exam-ple, from BASF under the designation Luviskol VA 64 Fraction B):
20.00% of isopropanol 2.00% of polydimethylsiloxane containing phenyl groups, obtainable under the designation Wacker-Belsil PDM 20 from Wacker-Chemie, Munich 71.60% of water Fraction C) 4.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter The platelet-shaped pigments used in this case whose 25 coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674, the layer thick-ness being 5 ~,m instead of 7 ~,m and the pigment fraction used being obtained by milling for three minutes in a universal mill and then screening with an analytical 30 sieve having a mesh size of 100 ~cm and screening the resulting sieve fraction with a second analytical sieve having a mesh size of 32 Vim, as oversize.
Fraction B was mixed, Fraction A was slowly mixed into Fraction B, and then Fraction C was mixed in.
The hair gel has a greenish shimmer in the glass container and on the skin and in black hair provides strong effects with a color flop from green to blue; in light-colored hair, the effects are somewhat more moder-ate.
Example 7: Self-foaming lotion Fraction A) 81.50% of water 1.00% of acrylic acid polymer, obtainable for example from B.F. Goodrich under the designation Carbopol 934 2.50% of vinyl acetate/ethylene copolymer, under the designation Vinnapas RE 526-Z from blacker-Chemie, Munich Fraction B) 1.00% of triethanolamine Fraction C) 2.50% of sodium lauryl sulfate, obtainable for exam-ple under the designation Texapon N 40 from Henkel, Dusseldorf 9.00% of low-viscosity volatile polydimethylsilox ane, obtainable under the designation blacker-Belsil DM 0.65 from blacker-Chemie, Munich 0.50% of glucose-functional polydimethylsiloxane obtainable under the designation SPG 121 VP from blacker-Chemie, Munich 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 20 to 260 Vim).
The platelet-shaped pigments used, whose coloring depends on the viewing angle, were prepared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 Vim, and the pig-ment fraction used was obtained by milling for two min-utes in a universal mill and then screening with an ana-lytical sieve having a mesh size of 250 Vim.
Fraction A was mixed thoroughly until a homogeneous solution had formed, which was then neutralized with Fraction B, and Fraction C was mixed in.
The self-foaming lotion is highly glistening and, on the skin, exhibits a particularly strongly pronounced red-green color flop effect.
Example 8: Sunscreen lotion Fraction A) 6.00% of emulsifier mixture obtainable commercially, for example, under the designation Teginacid from Goldschmidt 1.00% of isopropyl myristate 1.00% of polydimethylsiloxane obtainable under the designation blacker-Belsil DM 350 from blacker-Chemie, Munich 4.00% of thin liquid paraffin 1.00% of cetyl stearyl alcohol, obtainable for exam-ple under the designation Lanette O from Henkel, Dusseldorf Fraction B) 10.00% of a combination of a highly viscous poly dimethylsilicone rubber with highly volatile cyclic polydimethylsiloxanes, obtainable under the designa-tion blacker-Belsil CM 1000 from blacker-Chemie, Munich 2.00% of W absorber, obtainable for example from Givaudan-Roure under the designation Parsol MCX
Fraction C) 71.50% of water 1.50% of glycerol Fraction D) 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle size l0-55 Vim) .
The platelet-shaped pigments used here, whose color-ing depends on the viewing angle, were prepared as des-cribed in Example 4 B of EP-A-686 674, with the differ-ence that, the pigment fraction used was obtained by milling for five minutes in a universal mill and then screening with an analytical sieve having a mesh size of 5 0 ~,~tm .
Fraction A and Fraction C were each heated to 65 -70'C. Fraction C was stirred into Fraction A, and then Fraction B was mixed in at about 40'C. Fraction D was incorporated homogeneously into the finished formulation.
The sunscreen lotion shows moderate color effects on skin with a color flop from green to blue.
Example 9: Sunscreen stick Fraction A) 67.00% of vaseline 25.00% of stearoxy-functional waxlike polydimethyl siloxane, obtainable under the designation Wacker-Belsil SDM 6022 from Wacker-Chemie, Munich Fraction B) 4.00% of W absorber obtainable, for example, under the designation Parsol MCX from Givaudan-Roure 4.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 10 to 55 ~Cm) .
The platelet-shaped pigments used, whose coloring depends on the viewing angle, were prepared as described in Example 3 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~cm, and the pig-ment fraction used was obtained by milling for five min-utes in a universal mill and then screening with an ana-lytical sieve having a mesh size of 50 Vim.
Fraction A was heated to about 60'C and mixed thor-oughly, and Fraction B was mixed in at about 40'C. The mixture was then introduced into the mold.
The sunscreen stick shows attractive bronze effects on the skin with a color flop from red to green. In the region of UV-C (200-230 nm) and UV-B (290-330 nm) radia-tion, increased absorption was found in comparison to the formulation without platelet-shaped pigments whose color-ing depends on the viewing angle.
Example 10: Sunscreen stick Fraction A) 62.00% of vaseline 30.00% of stearoxy-functional waxlike polydimethyl siloxane, obtainable under the designation Wacker-Belsil SDM 6022 from blacker-Chemie, Munich Fraction B) 4.00% of W absorber obtainable, for example, under the designation Parsol MCX from Givaudan-Roure 4.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 10 to 50 ~Cm) .
The platelet-shaped pigments used, whose coloring depends on the viewing angle, were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~,m instead of 7 Vim, and the pig-ment fraction used was obtained by milling for five min-utes in a universal mill and then screening with an ana-lytical sieve having a mesh size of 50 Vim.
Fraction A was heated to about 60'C and mixed thor-oughly and then cooled, and Fraction B was mixed in at about 40°C. The mixture was then introduced into the mold.
The sunscreen stick is a soft stick which in the packaging has a slight greenish shimmer and on the skin shows a color flop to blue. It is ideal as a lipcare stick with sunscreen.
Example 11: Colorless nail varnish Fraction A) 18.00% of nitrocellulose, obtainable commercially, for example, from ICI, Frankfurt 4.00% of silsesquioxane containing phenyl groups, obtainable from blacker-Chemie, Munich under the designation Intermediate SY 430, 11.00% of xylene 5.00% of methyl ethyl ketone 22.00% of ethyl acetate 22.00% of butyl acetate Fraction B) 2.00% of camphor 3.00% of butyl glycolate 1.00% of diisopropyl adipate, obtainable commer-cially, for example, from Dragoco, Holzminden under the designation Isoadipat 8.00% of ethanol 2.00% of dibutyl phthalate Fraction C) 2.00% of platelet-shaped pigments whose coloring depends one the viewing angle (particle diameter 100 to 260 nm).
The platelet-shaped pigments used whose coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~cm instead of 7 ~cm, and the pig-ment fraction used was obtained by milling for two min-utes in a universal mill and then screening using an ana-lytical sieve having a mesh size of 250 ~cm and then a second screening of the sieved material through an ana-lytical sieve having a mesh size of 100 ~cm, as oversize.
Fraction A was mixed thoroughly and stirred until a homogeneous mixture had formed. Fraction B was mixed in homogeneously and then Fraction C was added.
The colorless nail varnish gives attractive color effects with a color flop from green to blue, which is intensified further when it is applied over a dark under varnish.
Example 12: Eyeshadow compact powder Fraction A) 20.00% of talc 25.00% of kaolin 5.00% of titanium dioxide 10.00% of calcium carbonate 5.00% of magnesium stearate 5.00% of boron nitride, obtainable under the desig-nation blacker Bornitrid BNP from blacker-Chemie, Munich 12.50% of zinc stearate Fraction B) 3.50% of isopropyl myristate 4.00% of oleyl oleate, obtainable for example under the designation Cetiol from Henkel, Dusseldorf Fraction C) 5.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 5-35~tm) 5.00% of pigment dye obtainable, for example, under the designation Cloisonne Blue 650 Z from Mearl The platelet-shaped pigments used whose coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674 with the difference that the layer thickness is 5 ~cm instead of 7 Vim, and the pigment fraction used was obtained by milling for seven minutes in a universal mill and then screening using an analyti-cal sieve having a mesh size of 32 ~cm.
Mix Fraction A thoroughly, heat Fraction B and mix it in portions, mix in Fraction C and homogenize the mix-ture well, and then press it to form small blocks.
The eyeshadow compact powder is a lilac powder with a slightly greenish shimmer and a color flop to blue.
Example 13: Shower gel 22.50% of alkylamidopropylbetain, obtainable for example from Hoechst under the designation Genagen CAB
53.50% of water 22.50% of ammonium lauryl ether sulfate, obtainable for example from Henkel, Dusseldorf under the designation Texapon NA
1.00% of polyether-modified polydimethylsiloxane, obtain-able from blacker-Chemie under the designation Wacker-Belsil DMC 6038 0.50% of ammonium chloride 2.00% of platelet-shaped pigments whose coloring depends on the viewing angle (particle diameter 50 to 260 Vim) The platelet-shaped pigments used whose coloring depends on the viewing angle were prepared as described in Example 4 of EP-A-686 674, with the difference that the layer thickness is 5 ~m instead of 7 hem, and the pig-ment fraction used was obtained by milling for three min-utes in a universal mill and then screening using an ana-lytical sieve having a mesh size of 250 ~m and then a second screening of the sieved material through an ana-lytical sieve having a mesh size of 50 Vim, as oversize.
All of the components were mixed in the sequence given.
The shower gel has a marked greenish shimmer and shows a strong color flop to blue.
Example 14: Shower gel The shower gel was prepared as described in Exam-ple 13 with the difference that 0.2% of platelet-shaped pigments whose coloring depends on the viewing angle were employed.
In comparison with the shower gel from Example 13, the shower gel has a less pronounced greenish shimmer and showed a highly moderate color flop to blue.
Example 15: Body gel Fraction A) 0.40% of an acrylic acid polymer obtainable com-mercially, for example, from B.F. Goodrich under the designation Carbopol 94, 64.70% of water.
Fraction B) 0.80% of a polyether-modified polydimethylsiloxane, obtainable commercially from blacker-Chemie, Munich under the designation blacker-Belsil DMC 6031 Fraction C) 33.00% of ethanol Fraction D) 0.30% of triethanolamine Fraction E) 0.05% of pigments whose coloring depends on the viewing angle, as used in Example 10.
Fraction A was mixed thoroughly and heated to 75'C, Fraction B was mixed in, and the mixture was stirred thoroughly. After cooling to about 45°C, Fraction C and then Fraction D were mixed in.
The body gel had a greenish blue shimmer. It is out-standingly suitable as a gel base for medical gels.
Example 16: Ointment base Fraction A) 9.00% of cetyl stearyl alcohol, obtainable for exam-ple from Henkel, Dusseldorf under the designation Lanette O
10.50% of thick liquid paraffin 10.50% of white vaseline 1.00% of polydimethylsiloxane with a viscosity of 350 mm2/s, obtainable from blacker-Chemie, Munich under the designation Pharsil 350 Fraction B) 68.00% of water Fraction C) 1.00% of pigments whose coloring depends on the viewing angle, as used in Example 10.
Fraction A was heated to about 65-70°C. Fraction B
was heated and mixed into Fraction A, and the mixture was homogenized thoroughly. Then Fraction C was mixed in homogeneously.
The resulting ointment base had a greenish blue shimmer and was used as a creamy base for the incorpora-tion of pharmaceutical active substances with an appeal-ing appearance and an outstanding feel on the skin.
Example 17: Toothpaste 19.00% of water were introduced and 0.50% of sodium car-boxymethylcellulose, obtainable for example from Hoechst under the designation Tylose CB 200, and also 5.70% of highly disperse silicic acid, obtainable under the desig-nation HDK N 20 P from blacker-Chemie, Munich, were added with stirring.
4.30% of polyethylene glycol 400, 17.00% of 70% sorbitol solution and 50.00% of glycerol were stirred in. 4.00% of pigment whose coloring depends on the viewing angle, as used in Example il, 2.50% of sodium lauryl sulfate, obtainable for example under the designation Texapon K
1296 from Henkel, Dusseldorf were mixed in carefully.
. CA 02210893 1997-07-21 During this addition, severe foaming was avoided. The finished formulation was evacuated for a short time.
A transparent toothpaste was obtained with an inter-esting play of color from green to blue.
Claims (10)
1. A cosmetic or pharmaceutical preparation comprising pigments whose coloring depends on the viewing angle and comprising additives which are customary for cosmetic or pharmaceutical preparations, wherein the pigments comprise at least one oriented crosslinked substance having a liquid-crystalline structure with a chiral phase, are plateletlike in form and have a thickness of 1 - 20 µm.
2. A preparation as claimed in claim 1, wherein the pigments have a thickness of 4 - 8 µm.
3. A preparation as claimed in claim 1, wherein the pigments have a thickness of 4 - 6 µm.
4. A preparation as claimed in claim 1, wherein the pigments have a particle diameter of 5 - 500 µm.
5. A preparation as claimed in claim 1, wherein the pigments have a particle diameter of 10 - 100 µm.
6. A preparation as claimed in claim 1, wherein the pigments are present in the novel composition in amounts of 0.05 - 40% (w/w).
7. A preparation as claimed in claim 1, wherein the pigments are present in the novel composition in amounts of 0.1 - 20% (w/w).
8. A preparation as claimed in claim 1, wherein the pigments consist of polyorganosiloxanes.
9. A preparation as claimed in claim 1, which additionally comprises interference color pigments or metal luster pigments.
10. A preparation as claimed in claim 1, wherein additives present are one or more substances selected from the group consisting of animal, mineral, vegetable or synthetic oils, waxes or resins, wetting agents, fatty alcohols, emulsifiers, sunscreens, organic solvents, thickeners, dyes, pigments, pH
regulators, reducing agents, electrolytes, opacifying additives, preservatives, antioxidants, ion exchangers, fragrances, antiseborrheic agents and active substances which may serve to treat, care for and protect the skin or hair, and also water.
regulators, reducing agents, electrolytes, opacifying additives, preservatives, antioxidants, ion exchangers, fragrances, antiseborrheic agents and active substances which may serve to treat, care for and protect the skin or hair, and also water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19629761A DE19629761A1 (en) | 1996-07-23 | 1996-07-23 | Cosmetic or pharmaceutical composition containing pigment with angle-dependent colour properties |
| DE19629761.2 | 1996-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2210893A1 CA2210893A1 (en) | 1998-01-23 |
| CA2210893C true CA2210893C (en) | 2001-06-05 |
Family
ID=7800637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002210893A Expired - Fee Related CA2210893C (en) | 1996-07-23 | 1997-07-21 | Preparation whose coloring depends on the viewing angle |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5851277A (en) |
| EP (1) | EP0820756A1 (en) |
| JP (1) | JPH1072320A (en) |
| KR (1) | KR980008205A (en) |
| CA (1) | CA2210893C (en) |
| DE (1) | DE19629761A1 (en) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6535268B1 (en) * | 1995-10-30 | 2003-03-18 | Reveo, Inc. | Multilayer non metallic reflecting flakes for cosmetics and sunscreens |
| FR2750599B1 (en) * | 1996-07-02 | 1998-12-31 | Oreal | NOVEL COSMETIC COMPOSITIONS COMPRISING LIQUID CRYSTAL COLORING AGENTS AND THEIR USE |
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| JP6913084B2 (en) | 2015-10-06 | 2021-08-04 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ Ｇｅｓｅｌｌｓｃｈａｆｔ ｍｉｔ ｂｅｓｃｈｒａｅｎｋｔｅｒ Ｈａｆｔｕｎｇ | Chiral compound |
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| BE759469A (en) * | 1969-11-29 | 1971-05-26 | Merck Patent Gmbh | PEARL GLOSS PIGMENT AND THEIR METHODS OF |
| DE2244298C3 (en) * | 1972-09-09 | 1975-06-19 | Merck Patent Gmbh, 6100 Darmstadt | Pearlescent pigments and processes for their manufacture |
| DE2313331C2 (en) * | 1973-03-17 | 1986-11-13 | Merck Patent Gmbh, 6100 Darmstadt | Mica flake pigments containing iron oxide |
| DK0383376T3 (en) * | 1989-02-13 | 1995-02-06 | Akzo Nobel Nv | Liquid crystal pigment, process for its preparation and use in coatings |
| US5364557A (en) * | 1991-11-27 | 1994-11-15 | Faris Sades M | Aligned cholesteric liquid crystal inks |
| DE4240743A1 (en) * | 1992-12-03 | 1994-06-09 | Consortium Elektrochem Ind | Pigments with colors depending on the viewing angle, their production and use |
| GB2282146A (en) * | 1993-09-22 | 1995-03-29 | Central Research Lab Ltd | Chiral liquid crystal lamina with distinct regions |
| DE4416191A1 (en) * | 1994-05-06 | 1995-11-09 | Consortium Elektrochem Ind | Interference pigments from molecules fixed in a cholesteric arrangement and their use |
-
1996
- 1996-07-23 DE DE19629761A patent/DE19629761A1/en not_active Withdrawn
-
1997
- 1997-07-08 US US08/889,343 patent/US5851277A/en not_active Expired - Fee Related
- 1997-07-17 EP EP97112313A patent/EP0820756A1/en not_active Withdrawn
- 1997-07-21 CA CA002210893A patent/CA2210893C/en not_active Expired - Fee Related
- 1997-07-22 JP JP9195386A patent/JPH1072320A/en active Pending
- 1997-07-23 KR KR1019970034550A patent/KR980008205A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1072320A (en) | 1998-03-17 |
| DE19629761A1 (en) | 1997-06-05 |
| US5851277A (en) | 1998-12-22 |
| KR980008205A (en) | 1998-04-30 |
| EP0820756A1 (en) | 1998-01-28 |
| CA2210893A1 (en) | 1998-01-23 |
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| EEER | Examination request | ||
| MKLA | Lapsed |