WO2002036074A2 - Pigmented liquid crystal materials - Google Patents

Pigmented liquid crystal materials Download PDF

Info

Publication number
WO2002036074A2
WO2002036074A2 PCT/US2001/046296 US0146296W WO0236074A2 WO 2002036074 A2 WO2002036074 A2 WO 2002036074A2 US 0146296 W US0146296 W US 0146296W WO 0236074 A2 WO0236074 A2 WO 0236074A2
Authority
WO
WIPO (PCT)
Prior art keywords
pigment
composition
liquid crystals
cosmetic product
coloring agent
Prior art date
Application number
PCT/US2001/046296
Other languages
French (fr)
Other versions
WO2002036074A3 (en
WO2002036074B1 (en
Inventor
Dan Bosmann
Original Assignee
Presperse Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Presperse Incorporated filed Critical Presperse Incorporated
Priority to AU2720402A priority Critical patent/AU2720402A/en
Publication of WO2002036074A2 publication Critical patent/WO2002036074A2/en
Publication of WO2002036074A3 publication Critical patent/WO2002036074A3/en
Publication of WO2002036074B1 publication Critical patent/WO2002036074B1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0295Liquid crystals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/24Phosphorous; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25Silicon; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/466Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/49Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
    • A61K8/4973Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q3/00Manicure or pedicure preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/42Colour properties
    • A61K2800/43Pigments; Dyes
    • A61K2800/436Interference pigments, e.g. Iridescent, Pearlescent
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02Preparations containing skin colorants, e.g. pigments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02Preparations containing skin colorants, e.g. pigments
    • A61Q1/04Preparations containing skin colorants, e.g. pigments for lips
    • A61Q1/06Lipsticks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02Preparations containing skin colorants, e.g. pigments
    • A61Q1/10Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q3/00Manicure or pedicure preparations
    • A61Q3/02Nail coatings

Definitions

  • This invention relates to a novel composition of pigmented materials for use in cosmetics products, such as makeup for applying to the skin, of the face or the body, or other cosmetic treatments for the nails, eyelashes, eyebrows or hair, and lips, for example, nail enamel or polish, lipstick, mascara, eye shadow and the like, to provide moisture and enhanced visual effects.
  • cosmetics products such as makeup for applying to the skin, of the face or the body, or other cosmetic treatments for the nails, eyelashes, eyebrows or hair, and lips, for example, nail enamel or polish, lipstick, mascara, eye shadow and the like, to provide moisture and enhanced visual effects.
  • CLC Cholesteric Liquid Crystal
  • U.S. Patent No. 5,843,407 teaches lipstick compositions which comprise wax, emollient and a gelling agent wherein the inclusion of the gelling agent facilitates the retention of emollient oils particularly under high humidity and temperatures.
  • the disclosed lipsticks contain moisturizers which may be delivered to the lips in a non-polar/lipophilic medium in a thermodynamically stable way by using associated structures.
  • a method of making the lipstick is also disclosed.
  • Liquid crystal structures referenced as "association structures" are used in the lipsticks.
  • the lipstick compositions are designed to deliver emollients to the lips while avoiding oil from collecting on the outer surface of said lipstick, particularly when said stick is subjected to high humidity.
  • U.S. Patent No. 5,847,791 discloses a reflective color liquid crystal comprising a guest-host liquid crystal display, a color filter and a reflector.
  • the reflector is a simple mirror-like reflection surface.
  • the color filter is manufactured with a pigment dispersion method. The particle size of the pigment is reduced to provide strong light forward scattering and weak light back scattering.
  • the color filter provides light colors for the display as well as light scattering to increase the viewing angle for the display.
  • T. L. Smith et al U.S. Patent No. 5,932,309 discloses the physics of colored materials and of the respective optical effects attributable to plate-like interference colorants and particle scattering colorants. Methods and compositions for achieving material coloration using particle scattering are disclosed. According to Smith, these coloration effects can be designed to be either highly stable or dependent upon the switching effects of either temperature, integrated thermal exposure, moisture absorption, or exposure to actinic radiation. Articles employing materials with these coloration effects are described. Compositions comprising a solid, light-transmitting matrix component having a non- liquid particle scattering colorant dispersed therein.
  • Articles are produced wherein another solid second matrix component has an electronic transition colorant dispersed therein and the first and second compositions are disposed on one another and optionally interpenetrate each other.
  • Colored articles are produced in the form of fibers, films and molded articles.
  • Ukita et al, U.S. Patent No. 5,940,154 discloses the introduction of pigments into liquid crystals, specifically in an active matrix display.
  • the references to individual molecules suggest Ukita may have contemplated soluble dyes rather than insoluble pigment particles.
  • the above-mentioned reflection type liquid crystal display makes it possible to provide improved light diffusion and reflection functions without special techniques.
  • Ukita claims that it is possible to reduce the number of photolithography steps for fabricating an active matrix type substrate, for lower fabrication costs and a higher fabrication yield.
  • the present invention comprises a composition of coloring agent and liquid ciystal material which are mixed prior to being introduced to a product.
  • the colored liquid crystals may also be further combined with the same or different coloring agent.
  • the introduction of the present invention to a product alters the color and/or radiance that the product will subsequently convey.
  • Cosmetic products are so well-suited as vehicles for the present invention that cosmetic products will be utilized as illustrative examples of some of the many possible applications of the present invention.
  • the present invention may be added to enhance, contrast or combine with the existing color of the vehicle.
  • the present invention may also be used to provide color and radiance to a transparent vehicle.
  • the present invention can increase the usefulness and versatility of existing products.
  • the present invention inspires creativity and artistry by allowing its user to create original preparations as they see fit.
  • the present invention teaches adding a visual-enhancing composition, comprising a coloring agent mixed directly with liquid crystals, to a vehicle such as a cosmetic product, to obtain unique decorative, functional and aesthetic effects, namely dramatic color play and/or a high level of iridescence.
  • a visual-enhancing composition comprising a coloring agent mixed directly with liquid crystals
  • the present invention is to be combined with cosmetic products, either during manufacture or by the consumer after purchase. Therefore, to accommodate such needs, the present invention may be sold in small quantities for retail or in bulk for manufacture.
  • the coloring agents can be lakes, inorganic or organic pigments and/or pearlescent pigments or alternatively colorants. Pigments which are stable and do not generate much free radicals are preferred.
  • the present invention may comprise other visually-enhancing materials, or particularly in the case of cosmetics, nutrients for improving appearance.
  • Polymer colored articles of the present technology can also contain fillers, processing aids, antistats, antioxidants, antiozonants, stabilizers, lubricants, mold release agents, antifoggers, plasticizers, and other additives standard in the art. Unless such additives additionally serve desired purposes as particle scattering colorants or electronic transition colorants, such additives should preferably either dissolve uniformly in the polymer that contains the particle scattering colorant or such additives should have a degree of transparency and a refractive index similar to the matrix polymer.
  • Dispersing agents such as surfactants are especially useful in the present invention for dispersing the particle scattering colorant particles.
  • Surfactants or emulsifiers are divided into nonionic (no charge), anionic (negative charge), cationic (position charge) and amphoteric (both charges) based on whether or not they ionize in aqueous media.
  • Surfactants are derived from natural oils and fats and crude oils.
  • surfactant refers to mixtures of surfactants as well as a single organic compound.
  • Many suitable dispersing agents and other polymer additives are well known in the art.
  • Coupling agents that improve the coupling between particle scattering particles and host matrix are especially important additives for vanishing. For cases where either a glass or a ceramic is the particle scattering colorant, and the host matrix is an organic polymer, preferred coupling agents are various silanes that are commercially available and designed to improve bonding in composites that involve both inorganic and organic phases.
  • the relative amounts of pigment and liquid crystal are dependant on the intended color and/or amount of radiance desired.
  • the mixing of the pigment and liquid crystals renders a color to the liquid crystals, thus making it possible to make a visual impact with the colored crystals, without adding or changing the color of the vehicle.
  • using relatively small amounts of pigment is preferred.
  • Larger amounts of pigment are preferred when enhanced color play is desired.
  • the amounts range from 0.001 to 20% of the total.
  • flavor or fragrance oils such as peppermint oil, orange oil, citrus oil, or wintergreen oil can be used along with an alcohol or glycerine.
  • Flavor oils are usually mixed in a solvent such as ethanol to dilute the flavor.
  • the flavor oils useful herein can be derived form natural sources or be synthetically prepared. Generally, flavor oils are mixtures of ketones, alcohols, fatty acids, esters and terpenes.
  • flavor oil is generally recognized in the art to be a liquid which is derived from botanical sources, i.e. leaves, bark, or skin of fruits or vegetables, and which are usually insoluble in water.
  • Liquid crystals that are esters of cholesterol are preferred, particularly when the present invention is used with an aqueous vehicle. Additionally, these cholesteric liquid crystals (CLCs) are useful for skin repair, as they are taken up with the skin and may be used as carriers for various nutrients. CLCs also possess properties of both isotropic liquids and crystalline solids, which in effect, exhibit dramatic visual color play and a high level of iridescence. CLC mixtures in accordance with the present invention can be used to provide unique decorative, functional and aesthetic effects.
  • the present invention contemplates an embodiment that creates it's own dark background by grinding a small amount of pigment into the CLC, thus vastly increasing the visual impact without the use of a dark background and without imparting color to the skin.
  • the amounts would be 0.001 to 50 wt% , preferably as little as .05 wt% and as great as .5 wt%.
  • An alternative embodiment of the present invention comprises pigmented liquid crystals, formulated through mixing of pigment material and liquid crystals, and further combining another pigment material.
  • the effect of adding the embodiment just described to a vehicle can be to change the vehicle's color to a first color, while also adding liquid crystals of a second color. Also, further colors may combined during the formation to achieve desirable shades or color mixes. Pigment sizes generally range from 0.001-3 ug.
  • composition may further comprise an emollient component to aid application and adhesion, yield gloss and most importantly provide occlusive moisturization.
  • Skin care active ingredients in both water soluble and water insoluble forms include fat soluble vitamins such as vitamin A and E, sun screens and pharmaceutically active ingredients. These skin care active ingredients include zinc oxide, chamomile oil, gingko biloba extract; pyroglutamic acid, salts or esters; sodium hyaluronate; 2-hydroxyoctanoic acid; sulfur; salicyclic acid; carboxymethyl cysteine, and mixtures thereof.
  • Other skin conditioning agents including emollients, humectants, occlusives, and other miscellaneous ingredients which condition the skin including oils.
  • Said emollient component typically comprises from about 5% to about 90%>, preferably from about 25% to about 90%, and most preferably from about 70%) to about 90%> oils.
  • Oils are those materials which are organic substances that are liquid at ambient temperature. They are esters, triglycerides, hydrocarbons and silicones. These can be a single material or a mixture of one or more materials. The oils act as emollients and also impart desirable skin feel characteristics and viscosity.
  • Suitable oils include caprylic triglycerides; capric triglycerides; isostearic triglycerides; adipic triglycerides; propylene glycol myristyl acetate; lanolin; lanolin oil; polybutene; isopropyl palmitate; isopropyl myristate; isopropyl isostearate; diethyl sebacate; diisopropyl adipate; tocopheryl acetate; tocopheryl linoleate; hexadecyl stearate; ethyl lactate; cetyl oleate; cetyl ricinoleate; oleyl alcohol; hexadecyl alcohol; octyl hydroxystearate; octyl dodecanol; wheat germ oil; hydrogenated vegetable oils; petralatum; modified lanolins; branched-chain hydrocarbons; alcohols and esters;
  • Excess polar and nonpolar ' 5 solvents used to forming surfactant association structures can be used as emollients, particularly the polar solvents such as glycerine.
  • Other preferred polar solvent emollients include pyrrolidone carboxylic acid, sodium lactate or lactic acid, urea collagen, .alpha.-hydroxy propylglyceryl ether .alpha.-hydroxy acids (e.g., ethylglycolic acid, leucic acid, mandelic acid, glycollic acid), glucosamines, and elastin fibers, D-panthenol, alklantoin and hyaluronic acid and chondroitin sulfate. Please note that 0 some of these can be delivered with the association structures by dissolving into the polar liquid.
  • the present invention affords a great deal of possible arrangements of color and/or radiance. Some examples of the many possible formulations and uses of the present invention are illustrated below.
  • the liquid crystal/pigment blend is milled by three roll mill or other high shear equipment until the pigment is fine enough to read less than seven on a Hegman gauge, which corresponds to a measure of particulate size that should not be detectable by touch.
  • the particle size of the pigment must be fine 5 enough so that the dark background needed to achieve the iridescent effect is not visible to the naked eye.
  • a small amount of D&C Red No. 28 Aluminum Lake is added to a red liquid ciystal (formed through the 0 combination of Cholesteryl Oleylcarbonate, Cholesteryl Nonanoate and Cholesteryl Chloride).
  • the resultant liquid ciystal is pink in color with a preliminary red reflection for use as a blush or a light foundation.
  • a purple liquid crystal with a predominantly blue reflection is formed with the following materials.
  • the purple base may be used to counteract a yellowish tint to the skin.
  • Example 3 A red liquid ciystal with a predominantly green reflection can be formed in the following manner.

Abstract

A cosmetic composition comprising a pigment material and a liquid crystal material wherein the pigment is mixed directly with the liquid crystals prior to formulation with other cosmetic ingredients, to obtain a novel visual effect.

Description

PIGMENTED LIQUID CRYSTAL MATERIALS
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION This invention relates to a novel composition of pigmented materials for use in cosmetics products, such as makeup for applying to the skin, of the face or the body, or other cosmetic treatments for the nails, eyelashes, eyebrows or hair, and lips, for example, nail enamel or polish, lipstick, mascara, eye shadow and the like, to provide moisture and enhanced visual effects.
DESCRIPTION OF RELATED ART
It is commercially desirable to provide cosmetics which have unique decorative, functional and aesthetic effects. These effects are often achieved through the use of colorants, glasses, or other products which provide pearlescent, luminescent, or reflective effects when mixed into cosmetics. However, most of these products need to be viewed against a dark background to achieve these decorative effects. It is particularly desirable to have a product to achieve these effects which can be used in conjunction with conventional makeup without changing the aesthetic effects (such as color or shininess). Liquid Crystals which are esters of cholesterol simultaneously exliibit properties of an isotropic liquid and a crystalline solid. When oriented, these crystals can provide distinct visual effects and can dramatically change their appearance in response to an applied electric field. Such orientation and electric fields are of course not available for cosmetic materials whose particles are randomly organized. A further difficulty in releasing the potential visual properties of liquid crystals in the cosmetic arts is that the translucent nature of the liquid crystal material results in a substantial loss of the visual properties of the liquid crystal material in randomized mixtures such as typical cosmetic compositions.
Mixtures of Cholesteric Liquid Crystal (CLC) compounds exliibit dramatic visual color play and a high level of iridescence when viewed against a dark background. However, when viewed without a background or a light background the CLC's lose the majority of the effect due to the translucent nature of the material.
El-Nokaly, U.S. Patent No. 5,843,407 teaches lipstick compositions which comprise wax, emollient and a gelling agent wherein the inclusion of the gelling agent facilitates the retention of emollient oils particularly under high humidity and temperatures. The disclosed lipsticks contain moisturizers which may be delivered to the lips in a non-polar/lipophilic medium in a thermodynamically stable way by using associated structures. A method of making the lipstick is also disclosed. Liquid crystal structures referenced as "association structures" are used in the lipsticks. The lipstick compositions are designed to deliver emollients to the lips while avoiding oil from collecting on the outer surface of said lipstick, particularly when said stick is subjected to high humidity.
Hao, U.S. Patent No. 5,847,791discloses a reflective color liquid crystal comprising a guest-host liquid crystal display, a color filter and a reflector. The reflector is a simple mirror-like reflection surface. The color filter is manufactured with a pigment dispersion method. The particle size of the pigment is reduced to provide strong light forward scattering and weak light back scattering. The color filter provides light colors for the display as well as light scattering to increase the viewing angle for the display.
T. L. Smith et al, U.S. Patent No. 5,932,309 discloses the physics of colored materials and of the respective optical effects attributable to plate-like interference colorants and particle scattering colorants. Methods and compositions for achieving material coloration using particle scattering are disclosed. According to Smith, these coloration effects can be designed to be either highly stable or dependent upon the switching effects of either temperature, integrated thermal exposure, moisture absorption, or exposure to actinic radiation. Articles employing materials with these coloration effects are described. Compositions comprising a solid, light-transmitting matrix component having a non- liquid particle scattering colorant dispersed therein. Articles are produced wherein another solid second matrix component has an electronic transition colorant dispersed therein and the first and second compositions are disposed on one another and optionally interpenetrate each other. Colored articles are produced in the form of fibers, films and molded articles.
Ukita et al, U.S. Patent No. 5,940,154 discloses the introduction of pigments into liquid crystals, specifically in an active matrix display. The references to individual molecules suggest Ukita may have contemplated soluble dyes rather than insoluble pigment particles. The above-mentioned reflection type liquid crystal display makes it possible to provide improved light diffusion and reflection functions without special techniques. In particular, Ukita claims that it is possible to reduce the number of photolithography steps for fabricating an active matrix type substrate, for lower fabrication costs and a higher fabrication yield.
SUMMARY OF THE INVENTION
It is an object of the invention to provide cosmetics products, with the unique visual properties associated with pigmented liquid crystals. The present invention comprises a composition of coloring agent and liquid ciystal material which are mixed prior to being introduced to a product. The colored liquid crystals may also be further combined with the same or different coloring agent. The introduction of the present invention to a product alters the color and/or radiance that the product will subsequently convey.
Cosmetic products are so well-suited as vehicles for the present invention that cosmetic products will be utilized as illustrative examples of some of the many possible applications of the present invention. The present invention may be added to enhance, contrast or combine with the existing color of the vehicle. The present invention may also be used to provide color and radiance to a transparent vehicle. As a result, the present invention can increase the usefulness and versatility of existing products. Furthermore, the present invention inspires creativity and artistry by allowing its user to create original preparations as they see fit.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention teaches adding a visual-enhancing composition, comprising a coloring agent mixed directly with liquid crystals, to a vehicle such as a cosmetic product, to obtain unique decorative, functional and aesthetic effects, namely dramatic color play and/or a high level of iridescence. Preferably, the present invention is to be combined with cosmetic products, either during manufacture or by the consumer after purchase. Therefore, to accommodate such needs, the present invention may be sold in small quantities for retail or in bulk for manufacture.
The coloring agents can be lakes, inorganic or organic pigments and/or pearlescent pigments or alternatively colorants. Pigments which are stable and do not generate much free radicals are preferred.
In addition to pigmented liquid crystals, the present invention may comprise other visually-enhancing materials, or particularly in the case of cosmetics, nutrients for improving appearance. Polymer colored articles of the present technology can also contain fillers, processing aids, antistats, antioxidants, antiozonants, stabilizers, lubricants, mold release agents, antifoggers, plasticizers, and other additives standard in the art. Unless such additives additionally serve desired purposes as particle scattering colorants or electronic transition colorants, such additives should preferably either dissolve uniformly in the polymer that contains the particle scattering colorant or such additives should have a degree of transparency and a refractive index similar to the matrix polymer. Dispersing agents such as surfactants are especially useful in the present invention for dispersing the particle scattering colorant particles. Surfactants or emulsifiers are divided into nonionic (no charge), anionic (negative charge), cationic (position charge) and amphoteric (both charges) based on whether or not they ionize in aqueous media. Surfactants are derived from natural oils and fats and crude oils. The term "surfactant" as used herein refers to mixtures of surfactants as well as a single organic compound. Many suitable dispersing agents and other polymer additives are well known in the art. Coupling agents that improve the coupling between particle scattering particles and host matrix are especially important additives for vanishing. For cases where either a glass or a ceramic is the particle scattering colorant, and the host matrix is an organic polymer, preferred coupling agents are various silanes that are commercially available and designed to improve bonding in composites that involve both inorganic and organic phases.
Generally, the relative amounts of pigment and liquid crystal are dependant on the intended color and/or amount of radiance desired. However, the mixing of the pigment and liquid crystals renders a color to the liquid crystals, thus making it possible to make a visual impact with the colored crystals, without adding or changing the color of the vehicle. For this effect, using relatively small amounts of pigment is preferred. Larger amounts of pigment are preferred when enhanced color play is desired. Generally, the amounts range from 0.001 to 20% of the total.
Additionally, flavor or fragrance oils such as peppermint oil, orange oil, citrus oil, or wintergreen oil can be used along with an alcohol or glycerine. Flavor oils are usually mixed in a solvent such as ethanol to dilute the flavor. The flavor oils useful herein can be derived form natural sources or be synthetically prepared. Generally, flavor oils are mixtures of ketones, alcohols, fatty acids, esters and terpenes. The term "flavor oil" is generally recognized in the art to be a liquid which is derived from botanical sources, i.e. leaves, bark, or skin of fruits or vegetables, and which are usually insoluble in water.
Liquid crystals that are esters of cholesterol are preferred, particularly when the present invention is used with an aqueous vehicle. Additionally, these cholesteric liquid crystals (CLCs) are useful for skin repair, as they are taken up with the skin and may be used as carriers for various nutrients. CLCs also possess properties of both isotropic liquids and crystalline solids, which in effect, exhibit dramatic visual color play and a high level of iridescence. CLC mixtures in accordance with the present invention can be used to provide unique decorative, functional and aesthetic effects.
Probably the most dramatic way to view CLCs is against a dark background. However, without a background, or with a light-colored background, the CLCs lose the majority of their visual effect due to the translucent nature of the material. Therefore, the present invention contemplates an embodiment that creates it's own dark background by grinding a small amount of pigment into the CLC, thus vastly increasing the visual impact without the use of a dark background and without imparting color to the skin. The amounts would be 0.001 to 50 wt% , preferably as little as .05 wt% and as great as .5 wt%. An alternative embodiment of the present invention comprises pigmented liquid crystals, formulated through mixing of pigment material and liquid crystals, and further combining another pigment material. Thus, the effect of adding the embodiment just described to a vehicle can be to change the vehicle's color to a first color, while also adding liquid crystals of a second color. Also, further colors may combined during the formation to achieve desirable shades or color mixes. Pigment sizes generally range from 0.001-3 ug.
It is also understood that the composition may further comprise an emollient component to aid application and adhesion, yield gloss and most importantly provide occlusive moisturization. Skin care active ingredients in both water soluble and water insoluble forms include fat soluble vitamins such as vitamin A and E, sun screens and pharmaceutically active ingredients. These skin care active ingredients include zinc oxide, chamomile oil, gingko biloba extract; pyroglutamic acid, salts or esters; sodium hyaluronate; 2-hydroxyoctanoic acid; sulfur; salicyclic acid; carboxymethyl cysteine, and mixtures thereof. Other skin conditioning agents including emollients, humectants, occlusives, and other miscellaneous ingredients which condition the skin including oils. Said emollient component typically comprises from about 5% to about 90%>, preferably from about 25% to about 90%, and most preferably from about 70%) to about 90%> oils. Oils are those materials which are organic substances that are liquid at ambient temperature. They are esters, triglycerides, hydrocarbons and silicones. These can be a single material or a mixture of one or more materials. The oils act as emollients and also impart desirable skin feel characteristics and viscosity. Suitable oils include caprylic triglycerides; capric triglycerides; isostearic triglycerides; adipic triglycerides; propylene glycol myristyl acetate; lanolin; lanolin oil; polybutene; isopropyl palmitate; isopropyl myristate; isopropyl isostearate; diethyl sebacate; diisopropyl adipate; tocopheryl acetate; tocopheryl linoleate; hexadecyl stearate; ethyl lactate; cetyl oleate; cetyl ricinoleate; oleyl alcohol; hexadecyl alcohol; octyl hydroxystearate; octyl dodecanol; wheat germ oil; hydrogenated vegetable oils; petralatum; modified lanolins; branched-chain hydrocarbons; alcohols and esters; corn oil; cottonseed oil; olive oil; palm kernel oil; rapeseed oil; safflower oil; jojob oil; evening primrose oil; avocado oil; mineral oil; sheabutter; octypalmitate; maleated soybeam oil; glycerol trioctanoate; diisopropyl dimerate; volatile and non- volatile silicone oils including phenyl trimethicone; isostearic acid derivatives, isopropyl palmitate, surfactants, lanolin oil, diisopropyl dimerate, maleated soybean oil, octyl palmitate, isopropyl isostearate, octyl hydroxystearate, cetyl lactate, cetyl ricinoleate, tocopheryl acetate, acetylated lanolin alcohol, cetyl acetate, lecithin, phenyl trimethicone, glyceryl oleate, tocopheryl linoleate, wheat germ glycerides, arachidyl propionate, isopropyl palmitate, myristyl lactate, decyl oleate, propylene glycol ricinoleate, isopropyl lanolate, pentaerythrityl tetrastearate, neopentylglycol dicaprylate/dicaprate, hydrogenated coco-glycerides, isotridecyl isononanoate, isononyl isononanoate, myristal myristate, triisocetyl citrate, cetyl alcohol, octyl dodecanol, oleyl alcohol, panthenol, lanolin alcohol, linoleic acid, linolenic acid and mixtures thereof. Excess polar and nonpolar '5 solvents used to forming surfactant association structures can be used as emollients, particularly the polar solvents such as glycerine. Other preferred polar solvent emollients include pyrrolidone carboxylic acid, sodium lactate or lactic acid, urea collagen, .alpha.-hydroxy propylglyceryl ether .alpha.-hydroxy acids (e.g., ethylglycolic acid, leucic acid, mandelic acid, glycollic acid), glucosamines, and elastin fibers, D-panthenol, alklantoin and hyaluronic acid and chondroitin sulfate. Please note that 0 some of these can be delivered with the association structures by dissolving into the polar liquid.
The present invention affords a great deal of possible arrangements of color and/or radiance. Some examples of the many possible formulations and uses of the present invention are illustrated below.
5
METHOD OF MANUFACTURE The manufacture of pigmented liquid crystals is done by dispersing organic or inorganic pigment into a liquid crystal with a propeller type mixer, pigment concentration can be from 0.001 to 50%). Hydrophobic fumed silica (2%o) is added to prevent agglomeration of pigment. Without the fumed silica, 0 the small amount of dark pigment agglomerate and will not evenly distribute within the liquid crystal and then will show a dark, splotchy spot without allowing the iridescent effect to come forth. Once dispersed the liquid crystal/pigment blend is milled by three roll mill or other high shear equipment until the pigment is fine enough to read less than seven on a Hegman gauge, which corresponds to a measure of particulate size that should not be detectable by touch. The particle size of the pigment must be fine 5 enough so that the dark background needed to achieve the iridescent effect is not visible to the naked eye.
Example 1
A small amount of D&C Red No. 28 Aluminum Lake is added to a red liquid ciystal (formed through the 0 combination of Cholesteryl Oleylcarbonate, Cholesteryl Nonanoate and Cholesteryl Chloride). The resultant liquid ciystal is pink in color with a preliminary red reflection for use as a blush or a light foundation.
Component wt%
Red Liquid Crystal 99.95 5 D&C Red No. 28 Aluminum Lake 0.05
100.00 Example 2
A purple liquid crystal with a predominantly blue reflection is formed with the following materials. The purple base may be used to counteract a yellowish tint to the skin. 0 Component wt% Blue Liquid Crystal 99.50 Manganese Violet 0.50
100.00
Example 3 A red liquid ciystal with a predominantly green reflection can be formed in the following manner.
Component wt%
Green Liquid Crystal 99.50
D&C Red No. 7 Calcium Lake 0.50
100.00
While some illustrative embodiments of the invention have been described above, it is, of course, understood that various modifications will be apparent to those of ordinary skill in the art. Such modifications are within the spirit and scope of the invention, which is limited and defined only by the appended claims.

Claims

'5 Claims
1. A composition for application to an object comprising: a) a plurality of cholesteric liquid crystals in admixture with b) at least one coloring agent characterized in that the coloring agent is in an amount of sufficient to provide a dark enough background to allow the ciystals to exliibit a iridescent effect while 0 not changing the color of the object when the crystals are applied to the object.
2. A composition for adding an iridescent effect to a cosmetic product comprising: a) a plurality of cholesteric liquid crystals in admixture with b) at least one coloring agent characterized in that the coloring agent is in an amount of 5 sufficient to provide a dark enough background to allow the ciystals to exliibit the iridescent effect wherein the composition does not alter the color of the cosmetic product.
3. A pre-mixed composition for combining with and adding an iridescent effect to a cosmetic product, comprising: 0 a) a plurality of cholesteric liquid crystals in admixture with b) at least one coloring agent characterized in that the coloring agent is in an amount of sufficient to provide a dark enough background to allow the crystals to exliibit the iridescent effect wherein the composition does not alter the color of the cosmetic product.
5 4. A method of adding an iridescent effect to a cosmetic product, comprising the following steps: a) mixing an amount of at least one coloring agent with a plurality of cholesteric liquid crystals to form a first composition; and b) combining said first composition with said cosmetic product characterized in that the coloring agent is in an amount of sufficient to provide a dark enough 0 background to allow the crystals to exhibit the iridescent effect while the composition does not alter the color of the cosmetic product.
5. A method of adding an iridescent effect to a non-cosmetic product, comprising the following steps: 5 a) mixing an amount of at least one coloring agent with a plurality of cholesteric liquid crystals to form a first composition; and b) combining said first composition with said non-cosmetic product *5 characterized in that the coloring agent is in an amount of sufficient to provide a dar enough background to allow the crystals to exhibit the iridescent effect while the composition does not alter the color of the non-cosmetic product.
6. A cosmetic composition for application to the skin comprising: 0 a) a cosmetic product, whereby said cosmetic product is capable of being applied to the skin; and b) a composition comprising at least one coloring agent in combination with a plurality of cholesteric liquid crystals characterized in that the composition does not alter the color of the cosmetic product and the 5 coloring agent is in an amount of sufficient to provide a dark enough background to allow the crystals to exhibit an iridescent effect.
7. A cosmetic composition comprising a pigment material and a plurality of cholesteric liquid crystals characterized in that the pigment is mixed directly with the liquid crystals prior to 0 formulation with other cosmetic ingredients, to obtain an iridescent effect wherein the composition does not alter the color of the cosmetic product and the coloring agent is in an amount of sufficient to provide a dark enough background to allow the crystals to exhibit an iridescent effect.
5 8. A process comprising: a) dispersing an organic or inorganic pigment into a plurality of cholesteric liquid crystals with a propeller type mixer to form a liquid crystal/pigment blend; and b) milling said liquid crystal/pigment blend by high shear equipment until the pigment is fine enough to read less than seven on a hegmen gauge 0 wherein the blend is a clear color.
A process according to claim 8 characterized in that the concentration of said pigment is between 0.001 to 50wt%.
35 10. The product of the process according to claim 8.
11. The product of the process according to claim 9 incorporated into a cosmetic formulation. *5
12. A process according to claim 8 characterized in that it further comprises a step of adding fumed silica before milling to prevent agglomeration of pigment.
13. A process according to claim 12 characterized in that the amount of fumed silica added is about 2 %>. 0
14. The product of the process according to claim 12.
15. A process comprising: a) dispersing an organic or inorganic pigment into a plurality of cholesteric liquid crystals with a 15 propeller type mixer to form a liquid crystals/pigment blend; b) adding hydrophobic fumed silica before milling to prevent agglomeration of pigment in the liquid crystals/pigment blend; c) milling said liquid crystals/pigment blend by high shear equipment until the pigment is
0 fine enough to read less than seven on a hegmen gauge.
16. A process according to claim 15 characterized in that the amount of fumed silica added is about 2 %>. 5
17. The product of the process according to claim 15.
18. A cosmetic composition comprising; a) a dark pigment material in admixture with a plurality of cholesteric liquid crystals wherein 30 the pigment is mixed directly with the liquid crystals to provide a first mixture b) a light colored cosmetic product having a first color mixed with the first mixture to provide a second mixture; wherein the second mixture has an iridescent effect and is still the same color as the light colored cosmetic product.
35
19. A process according to claim 8 wherein the concentration of said pigment is between 0.05 to 0.5wt%.
PCT/US2001/046296 2000-11-01 2001-10-26 Pigmented liquid crystal materials WO2002036074A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2720402A AU2720402A (en) 2000-11-01 2001-10-26 Pigmented liquid crystal materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70416200A 2000-11-01 2000-11-01
US09/704,162 2000-11-01

Publications (3)

Publication Number Publication Date
WO2002036074A2 true WO2002036074A2 (en) 2002-05-10
WO2002036074A3 WO2002036074A3 (en) 2002-07-04
WO2002036074B1 WO2002036074B1 (en) 2003-02-20

Family

ID=24828342

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/046296 WO2002036074A2 (en) 2000-11-01 2001-10-26 Pigmented liquid crystal materials

Country Status (2)

Country Link
AU (1) AU2720402A (en)
WO (1) WO2002036074A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2932981A1 (en) * 2008-06-26 2010-01-01 Oreal Set, useful for treatment, preferably for make-up of keratin material, comprises two different compositions, where first composition comprises medium having coloring agent and second composition is formed by non-polymerized liquid crystal
FR2935898A1 (en) * 2008-09-15 2010-03-19 Oreal Cosmetic treatment process, preferably for the makeup of human keratin materials e.g. lips, comprises forming a deposit on keratin materials, where the deposit has non-polymerized or non-polymerizable first and second liquid crystal
WO2015080319A1 (en) * 2013-11-28 2015-06-04 주식회사 진영바이오 Cholesterol derivative-based liquid crystal and liquid crystal capsules containing same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301023A (en) * 1980-06-23 1981-11-17 American Thermometer Co., Inc. Cholesteric compositions
US5260052A (en) * 1989-10-24 1993-11-09 Eastman Kodak Company Process for treating pigments
US5362315A (en) * 1992-12-03 1994-11-08 Consortium Fur Elektrochemische Industrie Gmbh Pigments whose color depends on the viewing angle, their preparation and use
US5382433A (en) * 1989-10-25 1995-01-17 Avon Products, Inc. Pigmented cosmetic compositions and method of making same
US5843407A (en) * 1993-10-18 1998-12-01 The Procter & Gamble Company Non-sweating lipsticks
US5851277A (en) * 1996-07-23 1998-12-22 Wacker-Chemie Gmbh Preparation whose coloring depends on the viewing angle
US5940154A (en) * 1996-11-05 1999-08-17 Nec Corporation Reflection type liquid crystal display and method of fabricating the same
US6180025B1 (en) * 1998-04-17 2001-01-30 Clariant Gmbh Infrared-reflecting colorants
US6346237B2 (en) * 1996-07-02 2002-02-12 L ′Oreal Cosmetic compositions comprising liquid crystal coloring agents and their use

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02178209A (en) * 1988-11-09 1990-07-11 Pacific Chem Ind Co Cosmetic composition containing cholesteryl ester liquid crystal and preparation thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301023A (en) * 1980-06-23 1981-11-17 American Thermometer Co., Inc. Cholesteric compositions
US5260052A (en) * 1989-10-24 1993-11-09 Eastman Kodak Company Process for treating pigments
US5382433A (en) * 1989-10-25 1995-01-17 Avon Products, Inc. Pigmented cosmetic compositions and method of making same
US5362315A (en) * 1992-12-03 1994-11-08 Consortium Fur Elektrochemische Industrie Gmbh Pigments whose color depends on the viewing angle, their preparation and use
US5843407A (en) * 1993-10-18 1998-12-01 The Procter & Gamble Company Non-sweating lipsticks
US6346237B2 (en) * 1996-07-02 2002-02-12 L ′Oreal Cosmetic compositions comprising liquid crystal coloring agents and their use
US5851277A (en) * 1996-07-23 1998-12-22 Wacker-Chemie Gmbh Preparation whose coloring depends on the viewing angle
US5940154A (en) * 1996-11-05 1999-08-17 Nec Corporation Reflection type liquid crystal display and method of fabricating the same
US6180025B1 (en) * 1998-04-17 2001-01-30 Clariant Gmbh Infrared-reflecting colorants

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE JPAB [Online] KIN ET AL.: 'Cholesteryl ester liquid crystal-containing cosmetic composition and its production', XP002909527 Retrieved from WEST & JP 2 178 209 A 11 July 1990 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2932981A1 (en) * 2008-06-26 2010-01-01 Oreal Set, useful for treatment, preferably for make-up of keratin material, comprises two different compositions, where first composition comprises medium having coloring agent and second composition is formed by non-polymerized liquid crystal
FR2935898A1 (en) * 2008-09-15 2010-03-19 Oreal Cosmetic treatment process, preferably for the makeup of human keratin materials e.g. lips, comprises forming a deposit on keratin materials, where the deposit has non-polymerized or non-polymerizable first and second liquid crystal
WO2015080319A1 (en) * 2013-11-28 2015-06-04 주식회사 진영바이오 Cholesterol derivative-based liquid crystal and liquid crystal capsules containing same

Also Published As

Publication number Publication date
WO2002036074A3 (en) 2002-07-04
AU2720402A (en) 2002-05-15
WO2002036074B1 (en) 2003-02-20

Similar Documents

Publication Publication Date Title
US6517818B1 (en) Lip or care stick which contains vitamins
AU650760B2 (en) Coloured cosmetic sticks
JP2752855B2 (en) Production method and use of solid dispersion containing polyhydric alcohol in fat body
JP5795702B2 (en) Sticky cosmetics with high gloss
JP2004510718A (en) Use of a cosmetic composition having a hydrophilic continuous phase containing a multilayer angular discoloration pigment as a make-up
JP2002154927A (en) Cosmetic composition containing goniochromatic pigment having multilayer structure and having lipophilic continuous phase and its use for makeup
CN104812359A (en) Color-changing composition
AU630026B2 (en) Aqueous cosmetic or dermo-pharmaceutical composition containing, in suspension, hydrated spheroids of a hydrophilic lipidic substance
JP5657455B2 (en) Oily cosmetic base and oily cosmetic
CN101125117A (en) Cosmetic composition in powdered form
MXPA01001684A (en) Oil-in-water emulsion comprising gellan and a particular surfactant and uses.
EP2512401B1 (en) Clear or translucent composition
CA2716596A1 (en) Skin care composition
EP3248588A1 (en) Makeup cosmetic
TWI476006B (en) Single-crystal platy barium sulfate in cosmetic compositions
CN105980429B (en) Maleic anhydride of styrene polymer in cosmetics and personal care product
US20060257336A1 (en) Cosmetic composition comprising silica particles, reflecting particles, and at least one polymer, preparative processes, and uses thereof
AU2002345721B2 (en) Stable cosmetic emulsion with polyamide gelling agent
CA2545456C (en) Transparent oil gelling system comprising a silica and a sugar fatty acid ester
JPH08268839A (en) Zinc oxide-coated extender pigment and cosmetics containing it
CN1679469B (en) Compositions for application to the skin, to the lips, to the nails, and/or to hair
JP5878447B2 (en) Base makeup cosmetics
EP3248589A1 (en) Makeup cosmetic
WO2002036074A2 (en) Pigmented liquid crystal materials
US9072918B2 (en) Method of formulating zinc oxide powder blends for balanced UVA/UVB attenuation

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
B Later publication of amended claims
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase in:

Ref country code: JP