HK1081871B - Non-pressurized post-application expanding composition - Google Patents

Description

Non-pressurized post-application expanding compositions

Technical Field

The present invention is based on the discovery of a post-application expanding composition for the hair fibres of the hair, eyebrows or eyelashes, which utilizes (a) the evaporation of the volatile (foaming) agent component of the composition, to expand the surfactant and solvent components of the composition, and (b) the film-former component of the composition, which allows at least a portion of the composition to set and fix in its expanded state, in order to impart a volume-expanding effect (volumizing effect) to the hair fibres, which composition may be based on (i) a microemulsion system, (ii) a system for solubilizing the volatile agent in the composition, or (iii) a system in which the volatile (foaming) agent is carbon dioxide generated in situ on the hair fibres.

Advantageously, post-application expanding compositions based on microemulsion systems, systems in which a volatile agent in the composition is solubilized or systems in which carbon dioxide is generated in situ on the hair fibers or generated just after application, can be stored in non-pressurized containers, thereby greatly reducing manufacturing and packaging costs and facilitating use of the composition.

Background

Many microemulsion-based products are known in the art. Such products include rigid polyurethane insulating foams, industrial surface cleaners, shaving compositions, and silicone microemulsions used in personal care.

US patent 5,962,396 and US patent 6,051,542 disclose a post-foaming cleansing composition which uses a hydrocarbon blowing agent and which requires packaging in a pressurized container. There is no awareness of using microemulsions to suppress blowing agents.

US patent 5,523,081 discloses a polyorganosiloxane microemulsion based shaving cream emulsion. The smaller particle size of the microemulsion is said to enhance the lubricity, richness and stability of the shaving foam. However, there is no awareness among others of suppressing volatile agents by using microemulsions, nor is there any mention of pigments or film-forming agents.

US patent 5,623,017 discloses an optically clear silicone microemulsion system containing a cyclic or linear methyl siloxane and a silicone polyether surfactant. The clear gels are said to be useful as carriers for anti-perspirant and deodorant agents, skin creams, skin care lotions, moisturizers, facial treatments such as acne or wrinkle removers, personal and facial cleansers, liquid soaps, bath oils, perfumes, toilet waters, sachets, sunscreens, pre-and post-shave lotions, shaving soaps, and shaving lathers. The patentees also indicate that the clear gels can be used in shampoos, conditioners, hair sprays, mousses, tonics, hair removers and cuticle coats. The patentees also state that the clear gel can be used as a leveling and spreading agent for pigments in cosmetics, color cosmetics, foundations, rouges, lipsticks, eyeliners, mascaras, oil removers, color cosmetic removers, and powders. There is no awareness of the use of microemulsions to inhibit volatile (foaming) agents in the expandable composition after application.

US patent 5,705,562 describes a spontaneously formed transparent silicone microemulsion. The purpose of the microemulsion is for leveling and spreading of the pigment, rather than to suppress volatile agents in the composition that swell after application.

US patent 5,683,625 discloses transparent microemulsion compositions containing low amino content microemulsifiable polysiloxanes and having a relatively high phase inversion temperature. The microemulsions may be components in personal care product formulations (e.g., hair conditioners and shampoos) and hair styling agents (e.g., styling gels and mousses).

US patent 6,096,702 discloses post-foaming detergent compositions containing polyoxyalkylene block copolymer surfactants which solubilize volatile hydrocarbons in the presence of anionic and amphoteric detergents to produce clear solutions or gels useful as skin cleansers, hair rinses, shower gels, laundry spot cleaners, carpet cleaners or hard surface cleaners. The patentee states that "the clarification obtained,Instant foamingLiquids or gels can be foamed on a surface with or without the aid of water "(emphasis on replenishment) and" can be packaged in unpressurized containers such as bottles and pumps, or in pressurized aerosol packages when n-butane, isobutylene or dimethylether propellants are used ". Patentees also disclose that compositions containing ammonium cocoyl isethionate in combination with amphoteric surfactants are extremely mildMaking them particularly suitable for use in skin and hair care compositions. The patentees also teach that the combination of ammonium cocoyl isethionate with amphoteric surfactant is capable of dissolving volatile hydrocarbons without the aid of any ethoxylated, propoxylated or mixed block polymers, resulting in a clear post-foaming solution. Patentees of the 6096702 patent to "instant foaming" compositions apparently do not teach or suggest compositions in which foaming is delayed. Patentees indicate that their compositions may contain various optional ingredients. Water-soluble gums, such as cellulosic polymers or natural gums, are disclosed as optional ingredients. Thus, patentees apparently do not recognize the necessity of including a film-forming agent in their compositions in an amount sufficient to capture at least a portion of the foam lattice generated when the volatile agent interacts with the surfactant and solvent for the surfactant (with the aid of water), thereby providing a volume expansion effect to the hair fibers. Although patentees indicate that color can be added to improve the cosmetic appearance of the product, they do not appreciate the use of a sufficient amount of color to impart color to the hair, eyebrows, or eyelashes other than white.

The in situ reaction of an acid with a carbonate or bicarbonate to produce carbon dioxide is well known in the art.

However, post-application expanding compositions for hair, eyebrow or eyelash hair, which utilize in situ generated carbon dioxide to foam one or more surfactant components of the composition and utilize a film-forming component of the composition to entrap at least a portion of the foam lattice and, when set, fix the composition in an expanded state, have not heretofore been proposed in the art.

PCT international application WO96/19189 makes use of a carbonate or bicarbonate salt to react with an acid in order to cause immediate formation of strong foam in dental hygiene products. The inventors sought to foam quickly rather than delay foaming.

Japanese patent application 10279453a discloses a dentifrice composition for removing dental plaque. The composition comprises a carbonate or bicarbonate salt, an acid, and a surfactant. The abstract does not mention the presence of a film former nor that the composition is a post-foaming composition.

The aforementioned PCT and japanese prior art documents do not teach the inclusion of film formers or delayed foam generation (post foaming). More importantly, they do not teach or suggest that their compositions may be applied to the hair of the hair, eyebrows or eyelashes.

PCT International application WO 98/20096 teaches a denture cleanser that foams rapidly and is not post-foaming.

US patent 6,177,092 discloses a self-foaming cleansing system for application to the skin or hair. The system has at least two components held in separate containers. When dispensed from their respective separate containers, they mix and react to produce carbon dioxide. Patentees teach the desirability of foaming immediately upon contact. Thus, the composition of the' 6177092 patent is not a delayed/post foaming composition. In addition, patentees do not appreciate the use of a sufficient amount of film former so that when it sets, it can trap at least a portion of the foam generated by the carbon dioxide generated in situ on the surfactant component of the composition.

Summary of The Invention

The present invention eliminates the need to store the post-application expanding composition in a pressurized container. In other words, the present invention makes unnecessary the use of a barrier container that is capable of withstanding the pressure required to maintain the volatile (foaming) agent component dispersed in the composition.

The invention is completed by the following modes: by (i) using a primary solubilizer (polymeric surfactant (block copolymer), polyvinyl alcohol substitute, or mixtures thereof); or (ii) solubilising the volatiles (foaming agents) in the composition using a microemulsion, or (iii) by dividing the composition into at least two separate sub-compositions, one containing the bicarbonate or carbonate salt and the other containing a cosmetically acceptable acid, or one containing the bicarbonate or carbonate salt and an acid dispersed or suspended in an anhydrous vehicle and the other containing water. When the sub-composition is mixed on the hair fibres or just before application to the hair fibres, the bicarbonate or carbonate reacts with the acid to produce carbon dioxide, thereby swelling (foaming) the surfactant on the hair fibres and the solvent for the surfactant.

Detailed Description

The present invention provides the three embodiments ((i), (ii) and (iii)) discussed immediately above to eliminate the need to store the post-application expanding composition in a pressurized container. For convenience, these embodiments will be referred to as:

(1) a "solubilizing system";

(2) "microemulsion system" (microemulsion-based compositions); and

(3) a "two part system" (two part composition, using carbon dioxide generated in situ as a propellant).

The solubilizing system, microemulsion system and two-part system all contained the following ingredients as components: a film-forming agent, a surfactant, a solvent for the surfactant, and optionally a colorant.

The solubilising and microemulsion systems also contain volatiles (blowing agents). In a two-part system, the volatilizing (foaming) agent is carbon dioxide generated in situ.

As previously mentioned, all three systems contain surfactants. When the propellant is released, it interacts with the surfactant and the solvent (e.g., water) for the surfactant, creating a foam lattice. Thus, the surfactant functions to generate foam. In contrast, in a solubilizing system, the primary solubilizing agent, e.g., a block copolymer surfactant, acts primarily to solubilize the volatile agent. In addition to solubilizing volatiles, block copolymer surfactants are also capable of generating foam lattices. This effect is secondary to the primary effect of the solubilizer as a volatile agent. Preferably, additional surfactants are used with the block copolymer surfactant to enhance foam generation and/or increase foam density and/or produce a more stable foam.

Film forming agent

The film former is present in a sufficient amount such that when the post-application expanding composition is applied to the hair of the hair, eyebrows, or eyelashes, and the post-foaming component begins to foam, the film formed by the film former is capable of stabilizing at least a portion of the foam (described in more complete detail below), thereby imparting a volume-expanding effect to the hair fibers following application of the composition of the present invention.

Film formers may be natural or synthetic. Film-forming waxes are known in the art and may be used alone or in combination with one or more natural or synthetic film-forming agents. Synthetic film formers, such as acrylate copolymers and/or methacrylate copolymers, acrylamide copolymers, and mixtures thereof, are particularly preferred.

Water soluble film formers that may be used are exemplified in the International cosmetic ingredient Dictionary and Handbook, 9 th edition (2002) monograph 27-33. Particularly preferred film formers include: (i) an acrylamide copolymer; for example, acrylamide/DMAPA acrylate/methoxy PEG methacrylate copolymers, acrylamide/sodium acrylate copolymers, acrylamide/sodium acryloyldimethyl taurate copolymers, acrylate/acrylamide copolymers, acrylate/t-butyl acrylamide copolymers and (ii) acrylate copolymers, for example, BF Goodrich's AVALURE AC115, AVALURE AC118, avalurea c120, AVALURE AC125, AVALURE AC210 and AVALURE AC 315; COVACRYL a15 and COVACRYL E14 for LCW; DAITOSOL5000 AD by Daito Kasei; acrylate/C1-2 succinate/hydroxyacrylate copolymer; acrylate/polydimethylsiloxane copolymers; acrylate/polydimethylsiloxane methacrylate/ethylhexyl acrylate copolymers; acrylate/dimethylaminoethyl methacrylate copolymers; acrylate/ethylhexyl acrylate copolymers; acrylate/ethylhexyl acrylate/HEMA/styrene copolymer; acrylate/hydroxy ester acrylate copolymers; acrylate/lauryl acrylate/stearyl acrylate/ethyl amine oxide methacrylate copolymers; acrylate/octylacrylamide copolymers; acrylate/propyltrimethicone (trimethicone) methacrylate copolymers; acrylate/stearyl acrylate/polydimethylsiloxane methacrylate copolymers; acrylate/VP copolymers; and acrylate/VP/dimethylaminoethyl methacrylate/diacetone acrylamide/hydroxypropyl acrylate copolymer. Polyvinyl alcohol and water-soluble polyvinyl esters may also be used.

More preferred film forming agents that can be used in the present invention include sodium acrylate copolymers, sodium acryloyldimethyl taurate copolymers, ethyl methacrylate/n-butyl acrylate/2-methylhexyl acrylate copolymers, and butyl acrylate/hydroxyethyl methacrylate copolymers. Polymer-type blends, such as Interpolymer SYNTRAN EX-100 and Kobo Product DAITOSOL5000 SJ, may also be used as synthetic polymeric film formers in the compositions of the present invention.

Depending on whether the post-application intumescent composition of the invention is primarily water or primarily oil, a suitable film former may be used. In fact, when the post-expansion composition is an emulsion, either a water soluble film former or an oil soluble film former or both may be used.

When the post-expansion composition is predominantly oil (organic or synthetic), then an oil-soluble synthetic polymer may be used as the film-forming agent. Suitable oil-soluble synthetic polymers include, for example, polyurethane-1, polyurethane-2, polyurethane-3, polyurethane-4, polyurethane-5, polyurethane-6, polyurethane-7, polyurethane-8, polyurethane-9, polyurethane-10, polyurethane-11, polyethylene, oxidized polyethylene, polypropylene, tetramethyltetraphenyltrisiloxane, melissyl trimethylpentaphenyltrisiloxane, styrene/MA copolymers, styrene/DVB copolymers, various quaternary ammonium synthetic polymers, and crosslinked polymers, such as PVM/MA decadiene crosslinked polymers.

Various oil-soluble derivatives of polyvinylpyrrolidone copolymers may also be used, with polyvinylpyrrolidone/decene copolymers and poly (vinylpyrrolidone/1-triacontene) being preferred. Ethyl esters of PVM/MA copolymers may also be used.

Water-soluble polyurethanes can also be used as film formers, for example, EPQ 30 and EPQ31(Johnson Polymers) and polyester urethane GK 910(alzo international, Inc.).

Preferably, the film former is present in the post-application intumescent composition of the present invention at a concentration of from about 1 to about 50 weight percent, more preferably from about 5 to about 40 weight percent, most preferably from about 8 to about 30 weight percent, and optimally from about 10 to about 25 weight percent, based on the total weight of the post-application intumescent composition.

When the post-expansion composition of the present invention is applied to hair fibers (such as eyelashes), the volatile agent is released and causes the surfactant and the solvent for the surfactant to swell/expand the composition. When the film former sets, it fixes at least a portion of the swollen/expanded composition to the eyelashes in its swollen/expanded state, thereby imparting a volume-expanding effect to the eyelashes.

As discussed below, the compositions of the present invention may contain a pigment dispersion that includes one or more film formers. The amount of film former provided by the pigment dispersion should take into account the total amount of film former of the intumescent composition after application. For example, if the post-application intumescent composition contains 50 weight percent (based on the total weight of the composition) of a pigment dispersion that contains 40 weight percent (based on the total weight of the pigment dispersion) of a film former, then the composition of the present invention has 20 weight percent (based on the total weight of the composition) of film former (due to the provision of the pigment dispersion). Additional film formers may be added. However, from a cost standpoint, it is preferred that no more than about 50 weight percent total be present, based on the total weight of the composition.

The inventors do not wish to be bound by any one theory, but believe that during post-foaming, the film-forming agent will solidify, thereby locking or closing the foam lattice into place by forming a film, preferably a flexible film, over at least a portion of the surface of the foam, or by increasing the rigidity of the foam lattice to stabilize the foam. Preferably, the film is capable of forming a coating covering greater than about 50% of the foam surface, more preferably greater than about 75% of the foam surface. Alternatively, the film former increases the stiffness of the foam lattice by greater than about 50%, more preferably greater than about 75%.

Since the compositions of the present invention are preferably used as cosmetic compositions for application to the skin of the lips or face, it is preferred that the film former be of a type and amount that allows the user to remove the composition with water, a soft soap, or a soft cosmetic cleanser. Since water washability/rinsing is not required, a water-insoluble film-forming agent is naturally usable.

Volatile agent

Suitable volatiles or blowing agents (halogenated or non-halogenated, synthetic or naturally occurring) have a vapor pressure of from about 0.5 torr to about 30,000 torr, preferably from about 5.0 torr to about 5,000 torr, and more preferably, from about 100 torr to about 2,500 torr, at from about 0 to about 100 ℃.

Examples of preferred propellants include, but are not limited to, n-pentane, isopentane, neopentane, n-butane, isobutane, isobutylene, cyclopentane, hexane, trichlorotrifluoroethane, 1, 2-dichloro, 1, 1, 2, 2-tetrafluoroethane, hydrofluoroethers, methyl perfluoropropyl ether, and mixtures thereof. Other suitable propellants may include, but are not limited to, perfluoromethylcyclohexane (manufactured by F2 Chemicals ltd., trade name Flutec PP2 or Flutec PC 2); perfluoromethylcyclopentane (available from the same company under the trade name Flutec PC 1C); and perfluorohexane and perfluorodimethylcyclohexane (available from the same company under the trade names Flutec PC1 and Flutec PC3, respectively). It is contemplated that perfluorodimethylcyclopentane (molecular weight of about 350) is also suitable for the present invention.

Coloring agent

One optional component of the post-application intumescent compositions of the present invention is a colorant, preferably a pigment.

The novel cosmetic compositions of the present invention may be clear or pigmented. Preferably, it is colored when applied to the eyelashes. The post-foaming gels of the prior art contain colorants as optional ingredients to give the composition a pleasing appearance. The compositions of the present invention, optionally, incorporate one or more coloring agents in an amount sufficient to mask the color of the foam, which is generally white, so as to impart a non-white color to the hair when the compositions of the present invention are applied thereto. Of course, for white hair, no colorant need be used. When the composition of the present invention contains a pigment in an amount sufficient to mask the color of the foam and impart color to the keratin fibers treated with the composition, the composition of the present invention can be used as a mascara, a dye or colorant for volume expansion of hair, or a composition for eyebrows.

Virtually any amount of colorant, preferably pigment, can be used so long as it can substantially change (preferably mask) the color of the foam produced on the hair in the absence of the colorant. Preferably the colorant (preferably pigment) is present in an amount sufficient to impart color to the hair fiber to which it is applied. The post-application expanding compositions of the present invention generally contain from about 0.5 to about 30 weight percent, preferably from about 1 to 15 weight percent, and more preferably from about 2 to about 10 weight percent of a colorant, preferably a pigment, based on the total weight of the post-application expanding composition.

Thus, the post-application expanding composition of the present invention preferably contains as a component a colorant, preferably a pigment, most preferably a pigment dispersion containing one or more film-forming agents, preferably film-forming polymers. Pigment dispersions are preferred because of their physical attributes associated with finely divided, non-caking, colored solutions that provide additional film-forming capability. A particularly preferred material is (because of its excellent properties) WSJ24BAMP, available from KoboProducts. The material consists of water (43-50 wt%); ethyl methacrylate/N-butyl acrylate/2-methylhexyl acrylate copolymer (25-30 wt%); iron oxide II, III (22-26 wt%); acryloyl dimethyl sodium taurate copolymer (0.1-5 wt%); 2-amino-2-methyl-1-propanol (0.1-5 wt%); and, optionally, a preservative blend (0.1-1 wt%). Powder pigments (iron oxide II, III) may also be used and when combined with a suitable water soluble polymeric film former and moderately dispersed, may achieve the desired effect. The preferred material, WSJ24BAMP, is generally used in an amount of about 5 to about 50 weight percent, based on the total weight of the expanded composition after application. It is to be understood that, instead of about 0.5 to about 30 weight percent pigment, the post-application intumescent composition may contain about 0.5 to about 90 weight percent of a pigment dispersion consisting of a polymeric film former, pigment, emulsifier, and other auxiliary agents.

Optional ingredients

The post-application swelling compositions of the present invention may optionally contain ingredients typically used in cosmetics, provided that they do not adversely affect the performance of the composition, resulting in hindering the achievement of its beneficial effects. Ingredients for these adjuncts include, for example, vitamins, antioxidants, preservatives, dyes, styling agents, fixatives and conditioners.

I. Solubilisation system

When the post-application expanding composition of the present invention is based on the solubilization of a volatile agent, it contains:

(1) an effective solubilizing amount of a primary solubilizer for the propellant, preferably from about 0.5% to about 35%, more preferably from about 5% to about 20% by weight, based on the total weight of the swelling composition after application. The main solubilizer is:

(A) at least one block polymer, preferably a block polyether, selected from:

(i) a MEROXAPOL block polymeric surfactant having the general formula:

wherein x has an average value of 7-21, y has an average value of 4-16, and z has an average value of 7-21, and x is equal to z.

Suitable MEROXAPOL block polymer surfactants include MEROXAPOL 105, 108, 171, 172, 174, 178, 251, 252, 254, 255, 258, 311, 312, and 314. (see The Cosmetic Toiletry and Fragrance Association, International Cosmetic Ingredient Dictionary and Handbook, Vol.2, 9 th edition, 2002, pp.959-961). Preferred MEROXAPOL block polymers include PLURONIC R series (available from BASF);

(ii) a POLOXAMER block polymer surfactant having the general formula:

wherein x has an average value of 2-128, y has an average value of 16-67, and z has an average value of 2-128, and x is equal to z.

Suitable POLOXAMER block polymer surfactants include POLOXAMER 101, 105, 108, 122, 123, 124, 181, 182, 183, 184, 185, 188, 212, 215, 217, 231, 234, 235, 237, 238, 282, 284, 288, 331, 333, 334, 335, 338, 401, 402, 403, 407, POLOXAMER 105 benzoate and POLOXAMER 182 dibenzoate. (see The Cosmetic Toiletry and Fragrance Association, International Cosmetic Ingredient Dictionary and handbook, Vol.2, 9 th edition, 2002, pp.1270-1275). Preferred POLOXAMER block polymers include PLURONIC L series (available from BASF); and

(iii) a POLOXAMINE block polymer surfactant having the general formula:

wherein x is 4-32 and y is 2-122.

Suitable POLOXAMINE block polymer surfactants include POLOXAMINE 304, 504, 604, 701, 702, 704, 707, 901, 904, 908, 1101, 1102, 1104, 1301, 1302, 1304, 1307, 1501, 1502, 1504 and 1508. (see The cosmetic toiletry and Fragrance Association, International cosmetic ingredient Dictionary and Handbook, Vol.2, 9 th edition, 2002, pp.1275-1279). Preferred POLOXAMER block polymers include the TETRONIC series (available from BASF);

(B) polyvinyl alcohol or polyvinyl alcohol substitute selected from the group consisting of PEG-800/polyvinyl alcohol copolymer, MA sodium/vinyl alcohol copolymer, acetylated polyvinyl alcohol, vinylamine/vinyl alcohol copolymer, VP/VA copolymer, polyvinyl acetate and polyvinyl acetal diethylaminoacetate. PEG-800/polyvinyl alcohol copolymer, sodium MA/vinyl alcohol copolymer, acetylated polyvinyl alcohol, vinylamine/vinyl alcohol copolymer and VP/VA copolymer are preferred polyvinyl alcohol substitutes; or

(C) Mixtures thereof.

(2) From 0% to 25% of a secondary solubilizer for the propellant, preferably from about 0.5% to about 20%, more preferably from about 0.75% to about 15%, most preferably from about 1% to about 10% by weight, based on the total weight of the swelling composition after application. The secondary solubilizer is preferably ammonium cocoyl isethionate selected from the group consisting of ammonium sodium oleoyl cocoyl isethionate, ammonium sodium myristoyl cocoyl isethionate, ammonium sodium lauroyl cocoyl isethionate, ammonium sodium cocoyl isethionate, ammonium cocoyl isethionate and mixtures thereof. Sodium cocoyl ammonium isethionate and cocoyl ammonium isethionate are preferred.

(3) From about 0% to about 20% anionic surfactant, preferably from about 0.1% to about 15%, more preferably from about 1% to about 10%, most preferably from about 2% to about 5% by weight, based on the total weight of the post-application swelling composition, preferably a salt of a C8-C22 fatty acid, more preferably a salt of a C10-C18 fatty acid and most preferably triethanolamine or an alkali metal salt of palmitic or stearic acid; the salt may be used as such or generated in situ in the intumescent composition after application, for example, by reaction of a fatty acid and triethanolamine.

The use of a combination of surfactants in an amount sufficient to solubilize the volatility (foaming) agent component of the post-application expansion composition in the composition, thereby eliminating the need to store the composition in a pressurized container;

(4) from 0% to about 20% of an amphoteric or zwitterionic surfactant, preferably from about 0.1% to about 15%, more preferably from about 1% to about 10%, most preferably from about 2% to about 5%. Amphoteric carboxylates (Amphocarboxylates), alkyl betaines, amidoalkyl sultaines, amphophosphates (amphophosphates), phosphobetaines, pyrophosphobetaines, carboxyalkylalkyl polyamines, alkylamino monoacetates, alkylamino diacetates and mixtures thereof may be used. Betaine surfactants are preferred. Cocamidopropyl betaine is most preferred;

(5) from about 0.5% to about 20% of a volatilizing (foaming) agent, preferably from about 1% to about 10% by weight, based on the total weight of the expanded composition after application. Suitable volatilizing (foaming) agents include any organic volatile (halogenated or non-halogenated) having a vapor pressure of about 0.5 torr to about 30,000 torr at about 0 ℃ to about 100 ℃. Examples of preferred organic propellants include, but are not limited to, n-pentane, isopentane, n-butane, isobutane, isobutylene, neopentane, cyclopentane, hexane, trichlorotrifluoroethane, 1, 2-dichloro, 1, 1, 2, 2-tetrafluoroethane and mixtures thereof. Preferably, the volatilizing (blowing) agent is selected from the group consisting of n-pentane, isopentane, n-butane, isobutane, isobutylene, neopentane, cyclopentane, hexane, and mixtures thereof;

(6) a film former in an amount effective to capture at least a portion of the foam generated by the interaction of the surfactant, the solvent for the surfactant, and the volatilizing (foaming) agent, which interaction occurs when the volatilizing (foaming) agent is released from the post-application intumescent composition of the invention;

(7) from 0% to about 5% of an emollient, preferably from about 0.5% to about 4%, more preferably from about 0.75% to about 3%, most preferably from about 1% to about 2% by weight based on the total weight of the post-application swelling composition, wherein said emollient is selected from the group consisting of ethylhexyl hydroxystearate, ethylhexyl stearate, butylene stearate, C12-15 alkyl benzoate, C12-13 alkyl lactate, glyceryl caprylate/caprate, castor oil/olive oil ester, cetearyl caproate, cetyl oleate, cocoglyceride, cyclic dimethicone, cyclic pentasiloxane, dimethiconol, dimethicone PEG-7 isostearate, ethylhexyl isostearyl stearate, ethylhexyl palmitate glyceryl oxide, ethylhexyl palmitate, glyceryl palmitate, hydrogenated polydecene, hydrogenated polyisobutene, isodecyl stearate, isopropyl palmitate, lanolin, mineral oil, PEG-11 coco glyceride and mixtures thereof. Octyl hydroxystearate is most preferred;

(8) optional colorants, preferably pigments, more preferably pigment dispersions, in amounts sufficient to impart color other than white to the hair fibers of the hair, eyebrows, or eyelashes. Liquid pigment dispersions containing film-forming polymers are preferred. The most preferred pigment dispersion is WSJ24 BAMP. Preferably, it is used in an amount of about 5% to about 50%, more preferably about 10% to about 40%, most preferably about 20% to about 35% by weight, based on the total weight of the swelling composition after application.

As used herein, an "effective solubilizing amount" or "amount sufficient to solubilize" refers to an amount sufficient to prevent any significant separation of the volatile agent from the composition. Thus, for example, an effective solubilizing amount can substantially prevent formation of a volatile agent separation layer. Generally, an effective solubilizing amount is from about 0.5% to about 20%, preferably from about 5% to about 10% by weight, based on the total weight of the final composition. Higher amounts may be used but may not be economical.

It should be noted that a particularly preferred solubilization system uses a triblock copolymer surfactant and polyvinyl alcohol or ammonium cocoyl isethionate. More preferred solubilizing systems use triblock copolymer surfactants, ammonium cocoyl isethionate (e.g., sodium cocoyl isethionate or ammonium cocoyl isethionate) and polyvinyl alcohol.

The following examples are presented for the purpose of illustrating the invention only and are not intended to limit any aspect of the invention.

Examples 1 to 4

Eyelash oil formula

Composition (I)	Example 1wt. -%)	Example 2wt. -%)	Example 3wt. -%)	Example 4wt. -%)
					Ethyl hexyl hydroxystearate	1.0	1.0	1.0	1.0
Oil-based polyoxyethylene ether-3 phosphate	0.5	0.5	0.5	0.5
					Isocetyl polyoxyethylene ether-20	0.5	0.5	0.5	0.5
Palmitic acid	3.0	3.0	3.0	3.0
					Stearic acid	1.0	1.0	1.0	1.0
Triethanolamine 99%	1.5	1.5	1.5	1.5
					SYNTRAN EX-100	18.0	18.0	7.5	7.5
PLURONIC Block Co-polymerizationPolymer and method of producing the same	5.0	5.0	10.0	10.0
					Cocoyl ammonium isethionate	3.0	3.0	5.0	5.0
DAITOSOL 5000 SJ	5.0	10.0	12.0	12.0
					WSJ24BAMP	30.0	30.0	30.0	30.0
Isopentane	3.0	3.0	3.0	3.0
					LIQUAPAR	0.5	0.5	0.5	0.5
Arabic gum	0.5	0.5	0.5	0.5
					Distilled water	27.5	22.5	24.0	24.0

The compositions of examples 1 to 4 were prepared according to the following general procedure:

(a) SYNTRAN EX-100, DAITOSOL5000 SJ, LIQUAPAR and WSJ24BAMP were mixed at room temperature.

(b) Mixing triethanolamine, isocetyl polyoxyethylene ether-20, oleyl polyoxyethylene ether-3 phosphate, palmitic acid, stearic acid, ethylhexyl hydroxystearate, gum arabic and water at about 75 deg.C to about 80 deg.C, and cooling to room temperature.

(c) The cocoyl ammonium isethionate and PLURONIC block polymers were mixed by means of a flat mixer. Isopentane was added and the mixture was mixed quickly and thoroughly.

(d) Adding the mixture of step (a) to the mixture of step (c) and thoroughly blending therewith.

(e) The mixture of step (b) is then added to and thoroughly blended with the produced mixture of step (d). The resulting mixture was then transferred to a container equipped with a suitable lid. In step (c), the preparation should be completed as quickly as possible after addition of isopentane.

It should be noted that in each of examples 1-4, the block copolymer and ammonium cocoyl isethionate were used primarily to solubilize the propellant (isopentane). The block copolymer acts as a primary solubilizer and the ammonium cocoyl isethionate acts as a secondary solubilizer. When the composition is spread over hair fibers, such as eyelashes, the surface exposed to ambient conditions increases. The propellant interacts with the block copolymer and the cocoyl ammonium isethionate and water to produce foam. Additional surfactants (e.g., triethanolamine stearate and palmitate generated in situ) are preferably used to enhance and stabilize the generation of foam.

Examples 5 to 9

Composition (I)	Example 5wt. -%)	Example 6wt. -%)	Example 7wt. -%)	Example 8wt. -%)	Example 9wt. -%)
						Hydroxyethyl cellulose	0.5	0.75	0.75	0.75	0.75
Polyvinyl alcohol	10.0	5.0	5.0	5.0	5.0
						Triethanolamine 99%	1.5	1.0	1.0	1.0	1.0
Oil-based polyoxyethylene ether-3	0.5	0.5	0.5	0.5	0.5
						Isocetyl polyoxyethylene ether-20	0.5	0.5	0.5	0.5	0.5
Palmitic acid	3.0	3.0	3.0	3.0	2.0
						Ethyl hexyl hydroxystearate	2.0	1.75	1.75	1.75	2.25
WSJ24BAMP	25.0	30.0	30.0	30.0	25.0
						GERMABEN II	0.5	-	-	-	-
LIQUIPAR	-	0.5	0.5	0.5	0.5
						E-14 film-forming agent	-	15.0	-	-	10.0
A-15 film-forming agent	-	-	15.0	-	-
						ALLIANZ film former	-	-	-	15.0	-
Cocoyl ammonium isethionate	1.0	3.0	3.0	3.0	1.5
						Block copolymer 31R1	4.0	5.0	5.0	5.0	3.0
Isopentane	3.0	3.0	3.0	3.0	2.0
						Water (W)	48.5	31.0	31.0	31.0	46.0

Examples 10 to 16

Composition (I)	Example 10wt. -%)	Example 11wt. -%)	Example 12wt. -%)	Example 13wt. -%)	Example 14wt. -%)	Example 15wt. -%)	Example 16wt. -%)
								Octyl hydroxystearate	1.75	1.75	1.75	1.75	1.75	1.75	1.75
Oil-based polyoxyethylene ether-3 phosphate	0.5	0.5	0.5	0.5	0.5	0.5	0.5
								Isocetyl polyoxyethylene ether-20	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Palmitic acid	3.0	3.0	3.0	3.0	3.0	3.0	3.0
								Triethanolamine 99%	1.0	1.0	1.0	1.0	1.0	1.0	1.0
PLURONIC Block copolymer 31R1	5.0	5.0	5.0	5.0	5.0	5.0	5.0
								PLURONIC Block copolymer L-61				5.0			5.0
Cocoyl ammonium isethionate	3.0	3.0	3.0	3.0	3.0	3.0	3.0
								Allianz OPT(ISP)	10.0	5.0	-	10.0	5.0	-	10.0
Polyvinyl alcohol	10.0	10.0	10.0	10.0	10.0	10.0	10.0
								Johnson Polymer EPQ30	5.0	5.0	10.0	-	5.0	10.0
WSJ24BAMP	30.0	30.0	30.0	30.0	30.0	30.0	30.0
								Isopentane	3.00	3.00	3.00	3.00	-	-	-
N-pentane	-	-	-	-	3.00	-	-
								Cyclopentane	-	-	-	-	-	5.00	-
Cyclopentane/isopentane (1: 1 ratio)	-	-	-	-	-	-	3.00
								LIQUAPAR	0.50	0.50	0.50	0.50	0.50	0.50	0.50
Sodium carboxymethylcellulose	0.75	0.75	0.75	0.75	0.75	0.75	0.75
								Distilled water	26.0	31.0	31.0	31.0	31.0	29.0	31.0

Compositions such as examples 5-16 were made according to the procedure of example 17 below. Although the process of example 17 uses a specific formulation to demonstrate the manufacturing process, other compositions of the present invention can be similarly prepared.

Example 17

General procedure for preparation

Phase (C)	Composition (I)	wt.％
			A	Deionized water (DM)	31
A	Sodium carboxymethylcellulose	0.75
			A	Polyvinyl alcohol	10
A	Triethanolamine (TEA)	1.5
			B	Oil-based polyoxyethylene ether-3-phosphate	0.5
B	Isocetyl polyoxyethylene ether-20	0.5
			B	Ethyl hexyl hydroxystearate	1.25
B	Palmitic acid	3
			C	ALLIANZ OPT	10
C	EPQ 30 polyurethanes	5
			D	WSJ24BAMP	25
E	LIQUAPAR	0.5
			F	PLURONIC Block Polymer	5
F	Ammonium cocoyl ammonium isethionate	3
			F	Isopentane	3

The process is as follows:

(a) sodium carboxymethylcellulose was sprayed into water under medium/slow speed (400-. Completely dispersing the sodium carboxymethyl cellulose without agglomeration;

(b) slowly adding polyvinyl alcohol and allowing sufficient time to disperse it;

(c) add triethanolamine and cover and heat phase a to 75 ℃;

(d) adding the phase B ingredients at 75 ℃, allowing about 3-5 minutes between each addition, to allow for complete mixing/dispersion of the ingredients before adding the next ingredient;

(e) mixing the combined phase a and phase B at 75 ℃ for about 10 minutes;

(f) discontinuing heating and cooling to about 55 ℃, replacing the agitator with a broom with a grate structure (waffle), and continuing sweeping at 80-100 rpm;

(g) phase C was slowly added directly to the batch at 55 ℃. Mixing for 5 minutes;

(h) cool to about 45 ℃, and slowly add phase D under sweeping mixing. Scraping the walls of the vessel with a scraper and ensuring adequate mixing;

(i) adding phase E under sweeping mixing conditions at about 30 ℃;

(j) continuing the sweeping mixing and cooling until the composition reaches about 2 ℃ to about 5 ℃;

(k) the E phase is prepared separately from the main composition under cold conditions (about 2 ℃ to about 5 ℃) (it should be noted that the processing temperature depends on the volatile used.

(l) The block polymer was quenched and placed into a cold jacketed vessel, a quenched propellant was added and mixed for about 10 minutes;

(m) slowly fine dusting cocoyl ammonium isethionate into the pentane/block polymer blend and continuing the mixing for about 5 minutes;

(n) slowly adding the quenched E phase to the main batch (A, B, C and D phase) using a large homogenizer and mixing until the E phase is fully dispersed; and

(o) filling the resulting mixture into a suitable container.

Microemulsion system

Microemulsions are thermodynamically stable isotropic dispersions of oil and water containing nanoscale domains stabilized by an interfacial film of surfactant. Basically, microemulsions are multi-component mixtures formed from oil, water, surfactants, co-surfactants and electrolytes.

The main difference between conventional mixtures and microemulsions is that the former are mixed on a molecular scale, whereas in the latter, the oil or water microspheres, with diameters on the order of 10-100nm, are dispersed in the water or oil, respectively, in the form of microspheres. The surfactant and co-surfactant are primarily located at the interface between the two phases and are distributed in equilibrium between the two media. Depending on the composition of the microemulsion, various phases and equilibria may be achieved. Some typical conformations may be oil-in-water (Winsor I), water-in-oil (Winsor II), and bicontinuous or layered (Winsor III).

The present inventors have unexpectedly discovered that the droplet size of the microemulsion and the thermodynamic stability of the appearance of such a system can act to inhibit volatilization (foaming) of the agent. Because the propellant is dispersed in the form of nanometer-sized droplets, microemulsion systems can effectively reduce the vapor pressure associated with "pure" propellant(s). The microemulsion-based post-application expanding composition is stable even with a high loading of the volatilizing (foaming) agent.

The use of a microemulsion system as the basis for the post-application swelling composition of the present invention enables, for example, the production of post-application swelling mascara that does not need to be packaged in a barrier-type can, such as a pressurized can.

When the post-application expanding composition based on the microemulsion system of the present invention is stored in a closed container, the volatilization (foaming) agent contained in the post-application expanding composition is completely suppressed. In other words, the volatile agent remains dispersed within the microemulsion. When the microemulsion-based post-application expanding composition of the present invention is removed from a container and applied and spread on a surface, such as eyelashes, and the composition is exposed to a normal atmospheric environment, the volatile (foaming) agent slowly migrates out of the composition in the form of a gas and interacts with the surfactant and the solvent for the surfactant, and a foam lattice is created. The lattice can be further optimized by using a foaming system such as a sodium salt of a fatty acid and/or one or more foaming aids such as betaine or sulfobetaine. The lattice may be trapped or held in an expanded configuration by the use of natural or synthetic film formers or combinations thereof.

Microemulsions can be tailored to have a variety of product options, such as low viscosity liquids, high viscosity liquids, gels, creams, semisolids, and even solids.

The following examples 18-22 illustrate compositions of the present invention based on microemulsion systems:

examples 18 to 22

Composition (I)	Example 18wt. -%)	Example 19wt. -%)	Example 20wt. -%)	Example 21wt. -%)	Example 22wt. -%)
						Propylene glycol	2.0	5.0	5.0	2.0	2.0
Cyclic polydimethylsiloxanes	15.0	-	-	24.5	22.0
						Isododecane		5.0
Silicone polyethers	-	-	-	10.5	12.5
						Oil-based polyoxyethylene ether-3 phosphate	-	-	5.0	-	-
Oil-based polyoxyethylene ether-10	-	-	2.0	-	-
						Palmitic acid	-	2.5	1.5
Cocoamidopropyl betaine	4.5	5.0	1.0	1.5	5.0
						Triethanolamine 99%	-	1.0	0.5	-	-
PPG-10 cetyl ether propylene glycol	5.0	-	-	-	-
						PPG-5 cetyl polyoxyethylene ether-20	16.0	-	-	-	-
Sodium lauryl ether sulfate-2 EO	-	10.0	-	-	-
						Isostearyl benzoate	10.0	-	-	-	-
Light mineral oil	-	-	10.0	-	-
						ALLIANZE OPT	-	-	-	-	10.0
Polyvinyl alcohol	-	-	-	-	10.0
						PVP	1.0	-	2.0	-	-
DAITOSOL 5000 SJ	5.0	10.0	5.0	10.0	-
						SYNTRAN EX-10	-	-	-	7.5	-
Black iron oxide (treated)	6.0	5.0	5.0	5.0	6.0
						Isopentane	-	6.0	-	-	-
Cyclopentane	10.0	-	-	-	-
						Cyclopentane/isopentane (1: 1 ratio)	-	-	10.0	10.0	-
N-pentane	-	-	-	-	10.0
						P-hydroxybenzoic acid methyl ester	0.3	0.3	0.3	0.3	0.3
GERMALL	0.2	0.2	0.2	0.2	0.2
						Sodium carboxymethylcellulose	0.25	0.2	0.5	0.2	0.5
Distilled water	24.75	49.8	52.0	24.5	21.5

Two-part System

When mixed with water, bicarbonate and carbonate salts can form carbonic acid and salts. Carbonic acid is unstable in water and spontaneously decomposes rapidly to carbon dioxide gas and water at room temperature. The chemistry involved is represented by the following reaction scheme:

wherein X is an alkali metal cation or an ammonium cation. Z is an alkaline earth metal cation. HY is an inorganic or organic acid and XY is an alkali or alkaline earth metal salt.

More specifically, in this embodiment of the invention, the volatilizing (foaming) agent, carbon dioxide, is generated in situ by the facile reaction of a cosmetically acceptable acid with a base in the presence of water. The carbonic acid produced is unstable in water and decomposes to water and carbon dioxide gas at room temperature. The carbon dioxide causes the composition to foam (swell or expand).

Suitable acids include, but are not limited to, citric acid, boric acid, tartaric acid, succinic acid, malic acid, formic acid, glycolic acid, polyacrylic acid, polyaspartic acid, and mixtures thereof. Microporous silica or buffered mineral acids (e.g., hydrochloric or phosphoric acid) having a pH of 5 or less may also be used. Citric acid is preferred.

Suitable bases include, but are not limited to, (i) inorganic carbonates and bicarbonates, e.g., ammonium, alkali metal and alkaline earth metal carbonates and bicarbonates, and (ii) organic carbonates, such as diethyl carbonate, propylene carbonate and dipropyl carbonate. Magnesium carbonate, calcium carbonate, sodium bicarbonate, sodium carbonate, diethyl carbonate, propylene carbonate and dipropyl carbonate are preferred. Sodium bicarbonate and potassium bicarbonate are most preferred.

When using polyacrylic acid as the acid reactive component, the swelling caused by the release of silica can be controlled by: (i) increasing the pH, which acts to thicken the polymer film and/or by (ii) increasing the amount of water in the composition, which acts to delay the reaction.

To apply this chemical reaction to a post-application expanding composition for application to hair, eyebrows, or eyelashes, water must be separated from the bicarbonate or carbonate salt and the acid until the in situ formation of carbon dioxide gas is desired.

One preferred embodiment using in situ generated carbon dioxide is to use a two part composition. Each part is packed in a different compartment of a container divided into two compartments, or the two parts are packed in separate containers.

For example, citric acid is dispersed in the anhydrous post-application expanding composition of the present invention and mascara is applied to, for example, eyelashes. Simultaneously, or shortly thereafter, an aqueous solution of a cosmetically acceptable base (such as sodium bicarbonate) is applied to the eyelashes and mixed with mascara with the aid of a mascara brush, thereby forming carbon dioxide. The carbon dioxide foams (swells or expands) the surfactant of the expanded composition and the solvent component for the surfactant after application. Thereafter, the film former component of the composition solidifies and captures at least a portion of the generated foam, thereby immobilizing the composition in an expanded state.

Alternatively, anhydrous sodium bicarbonate and anhydrous acid are dispersed in an anhydrous mascara composition and the composition is mixed with an aqueous composition containing a surfactant on the eyelashes. The aqueous surfactant solution was mixed with mascara containing sodium bicarbonate and acid using a mascara brush. The surfactant aids in mixing and the carbon dioxide produced acts to foam the surfactant and the solvent for the surfactant. When the film former component (preferably present in an aqueous solution) solidifies, it captures at least a portion of the generated foam lattice and allows the expanded composition to set in an expanded state after application.

The water must be separated from the bicarbonate or carbonate and acid until the in situ formation of carbon dioxide gas needs to occur.

For example, in the case of a mascara composition, a two part mascara may be formulated. Each section is packed in a different compartment of one container, or two separate containers may be used. The portion of the composition where the formulated water is present (typically greater than 40 wt.%, based on the total weight of the final composition) is packaged in a compartment (or in a separate container). The other compartment (or another separate container) contains the anhydrous portion of the formulation. The anhydrous portion is applied to the eyelashes first, followed by the aqueous portion. The presence of the surfactant in the formulation, in combination with the mechanical action of the mascara brush, will aid in the mixing of the two parts and the in situ generation of carbon dioxide.

In a preferred embodiment of the invention, the first part of the post-application expanding composition, which contains the carbonate or bicarbonate salt and the acid dissolved or dispersed in anhydrous polyethylene glycol, is stored in one compartment of a two-compartment container. A second part of the post-application expanding composition, containing a formulated amount of water, is stored in another compartment.

Alternatively, one portion is stored in a first container and the other portion is stored in a second container. The surfactant and film former may be components of the aqueous portion of the composition.

The acid and base may be dispersed in the anhydrous water-miscible vehicle or the acid may be contained in the anhydrous water-miscible vehicle and the base in the aqueous portion of the composition. In turn (acid in the aqueous part and base in the anhydrous part) can lead to possible eye irritation, color instability and changes in viscosity.

Anhydrous polyethylene glycol is highly preferred as a vehicle for the carbonate and bicarbonate and acid reactants. The water absorption properties of which facilitate rapid in situ generation of carbon dioxide when the aqueous portion of the composition is mixed with the anhydrous acid/base portion of the composition. While anhydrous polyethylene glycol is preferred, any viscous anhydrous cosmetically acceptable solvent can be used, wherein the solvent is readily miscible with water and the anhydrous acid and base can be suspended therein rather than co-reacted. Sorbitol and glycerol are further examples of such solvents.

It should be noted that as an alternative to separating the acid and base reactants in separate compartments, the base may be encapsulated in order to physically separate it from the other reactants.

Stoichiometric amounts of acid and base (carbonate or bicarbonate) reactants should be used. The co-reactant should be used in an amount such that, upon reaction, sufficient carbon dioxide is generated to interact with the surfactant and solvent for the surfactant to generate sufficient foam lattice and expand before the film former solidifies.

The following examples are provided to illustrate only two-part compositions prepared according to the present invention and are not intended to be limiting in any way.

In each of the following examples 23-25, part B contained a bicarbonate/acid mixture and part A contained water. In example 23, part B is based on an oil gelled polymer. In example 24, part B is based on anhydrous polyethylene glycol 400. Higher or lower molecular weight polyethylene glycols or mixtures of polyethylene glycols may be used if higher or lower viscosity products are desired. In example 25, part B is based on emulsifying wax. Part a of examples 23 and 24 had a high water content and a low viscosity, as typically used in mascara formulations. Part a of example 25 contains black mica. Therefore, the preparation of example 25 can be suitably used as a tint for eyebrows.

Example 23

Part A

Composition (I)	％
		P-hydroxybenzoic acid methyl ester	0.4
Hydroxyethyl cellulose HHR 250	0.1
		Propylene glycol	4.0
PVM/MA copolymer	1.0
		Black iron oxide/styrene acrylate treated	7.0
Kaolin clay	1.0
		Sodium aluminosilicate	0.1
Glycerol	1.0
		Acrylate copolymer aqueous/butylene glycol	10.0
Biosaccharide gum-1	1.0
		2-phenoxyethanol	0.98
Rose oil	0.03
		Chroma-lite black	2.0
Colorona patina Silver	0.5
		Deionized water	70.89

Part B

Composition (I)	％
		Isododecane and ethylene/propylene/styrene copolymer and butene/ethylene/styrene copolymer	69.0
Potassium bicarbonate/citric acid, powder (18.4/11.6)	30.0
		PEG-80 sorbitan laurate/cocamide surfactant	1.0

For part a, hydroxyethyl cellulose was slowly dispersed in water with vigorous stirring. The temperature was increased to 75 ℃ and the remaining ingredients were blended in. The batch was then slowly cooled to room temperature. The ingredients of part B were mixed at room temperature until the powdered potassium bicarbonate/citric acid mixture and surfactant were thoroughly dispersed in the mixture of isododecane and ethylene/propylene/styrene copolymer and butylene/ethylene/styrene copolymer.

Example 24

Part A

Composition (I)	％
		PVP	2.0
Acacia Senegal Gum	0.3
		Cellulose gum (2000CPS)	0.4
Polyquaternary ammonium-10 (Polyquaternium-10)	0.3
		P-hydroxybenzoic acid methyl ester	0.4
Triethanolamine 99%	1.6
		Iron oxide (black)/silica/BHT	9.5
Pentaerythritol Tetrastearate	1.0
		100 percent of shellac wax	3.0
Carnauba wax	1.8
		Beeswax (Cera flava)	5.2
Paraffin 165	8.5
		Stearic acid	4.0
Isooctahexacontane	2.5
		Glyceryl monostearate-self-emulsification	2.0
silica-Low absorption	2.0
		Propyl p-hydroxybenzoate	0.2
Acrylate copolymer/isododecane	0.1
		isododecane/gellant/BHT	2.5
Acrylic ester copolymer 30%/water	1.5
		Soybean oil	0.1
Hydrolyzed silk	0.1
		Deionized water	51.0

Part B

Composition (I)	％
		PEG-400	69.0
Potassium bicarbonate/citric acid, powder (18.4/11.6)	30.0
		PEG-80 sorbitan laurate/cocamide surfactant	1.0

For part a, the cellulose gum was slowly dispersed in water with vigorous stirring. The remaining ingredients (except for the wax) were blended in and finally triethanolamine was added until the pH was determined to be neutral. The temperature was increased to 75 ℃. Separately, the wax species is melted and then ground into the batch. The batch was then slowly cooled to room temperature. The ingredients of part B were mixed at room temperature until the powdered potassium bicarbonate/citric acid mixture and surfactant were thoroughly dispersed in PEG-400.

Example 25

Part A

Composition (I)	％
		PVM/MA copolymer	1.0
P-hydroxybenzoic acid methyl ester	0.4
		Imidazolidinyl ureas	0.2
PVP/VA copolymer-50% water	30.0
		Propylene glycol	4.0
Glycerol	1.0
		Alcohol SD 40B	5.0
Mica	0.25
		PEG-80 sorbitan laurate/cocamide	1.0
Biotite	3.75
		Acrylate copolymer aqueous/butylene glycol	10.0
Deionized water	43.4

Part B

Composition (I)	％
		Isododecane	44.7
Wax for emulsification	30.3
		Potassium bicarbonate/citric acid, powder (18.4/11.6)	25.0

For part a, the ingredients were blended into water at 45 ℃. The batch was then slowly cooled to room temperature. The ingredients of part B were mixed at a temperature slightly above the melting point of the emulsifying wax until the powdered potassium bicarbonate/citric acid mixture was thoroughly dispersed in the mixture.

The following examples 26 through 29 illustrate post-application expanding compositions that rely on mechanical agitation (rather than a propellant) to create a foam lattice and thus do not require packaging in a pressure-resistant container.

Examples 26 to 29

Eyelash oil formula

	26	27	28	29
					Composition (I)	wt.％	wt.％	wt.％	wt.％
Hydroxyethyl cellulose	0.5	0.5	0.5	1.0
					Oil-based polyoxyethylene ether-3 phosphate	0.5	0.5	0.5	-
Isocetyl polyoxyethylene ether-20	0.5	0.5	0.5	-
					Palmitic acid	4.0	2.0	4.0	-
Triethanolamine 99%	1.0	1.0	1.0	-
					SYNTRAN EX-100	10.0	11.0	18.0	18.0
DAITOSOL 5000 SJ	12.0	12.0	12.0	12.0
					Cocoamidopropyl betaine	0.5	0.5	3.0	4.0
WSJ24BAMP	25.0	25.0	25.0	25.0
					GERMABEN II	0.5	0.5	-	-
Sodium lauryl Ether sulfate	-	-	-	2.0
					LIQUAPAR	-	-	0.5	0.5
Deionized water, balance to	100	100	100	100

The compositions of the present invention, when applied in the form of mascaras, have the advantage of requiring fewer brush applications and thus greatly reducing handling. For example, 3 to 5 brushes are required, rather than 14 or more brushes as is typically required when applying prior art mascara products to eyelashes.

The composition of the present invention can be used for volumizing hair, and therefore can be used for hair of head, eyebrow and eyelash. As previously mentioned, when used for volume expansion, it may be used with or without a colorant such as a pigment. When used on hair that appears white, no colorant is needed. However, when used on hair that is not gray or white, then colorants, such as pigments, are typically included in the compositions of the present invention. A sufficient amount of colorant or pigment should be used to mask the color of the entrapped foam, and preferably a sufficient amount of colorant should be used to impart a predetermined desired level of color to the hair fibers.

The present invention also includes a method of imparting a volumizing effect to hair of the hair, eyebrows, or eyelashes comprising applying to the hair a composition of the present invention.

The post-application expanding composition of the present invention may be packaged in many types of commercially available containers, including movable metal tubes and barrier aerosol dispensers. If an aerosol dispenser is used, the post-application expanding composition is preferably kept separate from the propellant in the container by means of a bag, septum or piston inside the container. Such propellants are not to be confused with the component volatilizing (foaming) agents of the composition. If a diaphragm or piston is used, it may be actuated by a propellant or mechanical force (e.g., a spring).

The compositions of the present invention may be packaged, for example, in US patent 2,995,521; 3,541,581, respectively; 3,654,167, respectively; 4,405,489, respectively; 4,528,111; 4,651,503; 6,165,456 and US patent application publication US 2002/0122772 a 1.

It should be understood that the foregoing description is only illustrative of some embodiments of the invention. Various alternatives and modifications can be devised by those skilled in the art without departing from the invention. Accordingly, the present invention is intended to embrace all such alternatives, modifications and variances which fall within the scope of the appended claims.

Claims (44)

1. A post-application expanding cosmetically acceptable composition for application to hair fibers of the hair, eyebrows, or eyelashes, the composition comprising:

at least one anionic surfactant;

a solvent for the surfactant;

a propellant for swelling the composition after application to the hair fibers, selected from the group consisting of n-pentane, isopentane, neopentane, n-butane, isobutane, isobutene, cyclopentane, hexane, and mixtures thereof, in an amount of 0.5 to 20% by weight of the total weight of the composition after application;

a film former in an amount of 1 to 50 wt% based on the total weight of the composition and selected from the group consisting of acrylamide copolymers, acrylate copolymers, methacrylate copolymers, polyvinyl alcohol, water-soluble polyvinyl esters, oil-soluble synthetic polymers, polyvinylpyrrolidone/decene copolymers, poly (vinylpyrrolidone/1-triacontene), ethyl esters of PVM/MA copolymers, and water-soluble polyurethanes; and

from 0.5% to 35% by total weight of the post-application intumescent composition of a primary solubilizer selected from the group consisting of block polymer ethers, polyvinyl alcohol, and polyvinyl alcohol substitutes selected from the group consisting of PEG-800/polyvinyl alcohol copolymer, sodium MA/vinyl alcohol copolymer, acetylated polyvinyl alcohol, vinylamine/vinyl alcohol copolymer, VP/VA copolymer, polyvinyl acetate, and polyvinylacetal diethylaminoacetate;

wherein the volatile agent is dissolved in the composition and the volatile agent is further dispersed throughout the composition in the form of nano-sized droplets or generated in situ on the hair fibers or generated just prior to application to the hair fibers, thereby allowing the composition to be stored in a non-pressurized container.

2. The composition of claim 1, wherein the composition comprises 5 to 40 weight percent of the film forming agent, based on the total weight of the composition.

3. The composition of claim 1, wherein the composition comprises 8 to 30 weight percent of the film forming agent, based on the total weight of the composition.

4. The composition of claim 1, wherein the composition comprises 10 to 25 weight percent of the film forming agent, based on the total weight of the composition.

5. The composition of claim 1, wherein the film former is a polymer.

6. The composition of claim 1, wherein the film former is a copolymer.

7. The composition of claim 6 wherein the film former is selected from the group consisting of acrylate copolymers, methacrylate copolymers, acrylamide copolymers and mixtures thereof.

8. The composition of claim 1, wherein the composition contains a colorant.

9. The composition of claim 8 wherein the colorant is present in an amount sufficient to impart a color to the hair fibers other than white.

10. The composition of claim 8, wherein the colorant is a pigment.

11. The composition of claim 10, wherein the pigment is present in an amount such that the composition is suitable as a mascara.

12. The composition of claim 10, wherein the pigment is a pigment dispersion.

13. The composition of claim 12, wherein the pigment dispersion comprises water, iron oxide, and a second film forming agent.

14. The composition of claim 1, wherein the composition comprises a water-soluble viscosity increasing agent.

15. The composition of claim 14, wherein the water soluble viscosity increasing agent is selected from the group consisting of cellulose gums and hydrophilic colloids.

16. The composition of claim 1, wherein the composition is water-rinsable.

17. The composition of claim 1, wherein the composition is water rinse resistant.

18. The composition of claim 1, wherein the composition is a microemulsion.

19. The composition of claim 1, wherein the composition comprises the block polymer in an amount sufficient to solubilize the volatile agent in the composition.

20. The composition of claim 1, wherein the block polymer ether is selected from the group consisting of MEROXAPOL block polymer surfactant, POLOXAMER block polymer surfactant, and POLOXAMINE block polymer surfactant, and the block polymer ether is present in an amount sufficient to solubilize the volatile agent in the composition.

21. The composition of claim 1 wherein the anionic surfactant is selected from the group consisting of C₁₀-C₂₂Water-soluble salts of fatty acids, alkyl sulfates, alkyl ether sulfates, alkyl monoglyceryl sulfonates, alkyl sulfonates, alkylaryl sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl sulfosuccinates, alkylamide sulfosuccinates, alkyl carboxylates, alkylamide ether carboxylates, alkyl succinates, fatty acyl sarcosinates, fatty acyl amino acids, fatty acyl taurates, fatty alkyl sulfoacetates, alkyl phosphates, alkyl ether phosphates, and mixtures thereof.

22. The composition of claim 21, wherein C₁₀-C₂₂The water soluble salts of fatty acids are selected from the sodium, potassium and triethanolamine salts of palmitic, stearic, oleic, myristic, palm and coconut fatty acids and mixtures thereof.

23. The composition of claim 1, wherein the composition further comprises an amphoteric or zwitterionic surfactant.

24. The composition of claim 23 wherein the amphoteric or zwitterionic surfactant is selected from the group consisting of amphocarboxylates, alkyl betaines, amidoalkyl sultaines, amphophosphates, phosphobetaines, pyrophosphobetaines, carboxyalkyl alkyl polyamines, alkyl amino monoacetates, alkyl amino diacetates, and mixtures thereof.

25. The composition of claim 1, wherein the composition comprises a nonionic surfactant.

26. The composition of claim 1, wherein the propellant has a vapor pressure of 0.5 torr to 30,000 torr at 0-100 ℃.

27. The composition of claim 26, wherein the vapor pressure is from 5.0 torr to 5,000 torr.

28. The composition of claim 26, wherein the vapor pressure is from 100 torr to 2,500 torr.

29. A composition according to claim 1 wherein the primary solubilizer is present in an amount of 5% to 20%.

30. The composition of claim 1, wherein the primary solubilizer is a block polymer ether, polyvinyl alcohol, PEG-800/polyvinyl alcohol copolymer, MA sodium/vinyl alcohol copolymer, acetylated polyvinyl alcohol, vinylamine/vinyl alcohol copolymer, VP/VA copolymer, or mixtures thereof.

31. The composition of claim 1 wherein the primary solubilizer is selected from the group consisting of block polymer ethers, polyvinyl alcohols, and mixtures thereof.

32. The composition of claim 1 wherein the primary solubilizer is a block polymer ether selected from the group consisting of MEROXAPOL block polymer surfactants, POLOXAMER block polymer surfactants, POLOXAMINE block polymer surfactants, and mixtures thereof.

33. The composition of claim 1 wherein the primary solubilizer is polyvinyl alcohol and the amount of polyvinyl alcohol is also effective to form a film which, when solidified, immobilizes at least a portion of the swollen composition in an expanded state such that the polyvinyl alcohol functions as both the solubilizer and the film-former.

34. The composition of claim 1 further comprising a conditioning amount of an emollient selected from the group consisting of ethylhexyl hydroxystearate, ethylhexyl stearate, butylene glycol stearate, C_12-15Alkyl benzoates, C_12-13Alkyl lactate, caprylic/capric glyceride, castor oil/olive oil ester, cetearyl ethyl hexanoate, cetyl oleate, cocoglyceride, cyclic dimethicone, cyclic pentasiloxane, dimethiconol, dimethicone PEG-7 isostearate, ethylhexyl isostearate, ethylhexyloxy glyceryl palmitate, ethylhexyl palmitate, glyceryl palmitate, hydrogenated polydecene, hydrogenated polyisobutene, isodecyl stearate, isopropyl palmitate, lanolin, mineral oil, PEG-11 cocoglyceride and mixtures thereof.

35. The composition of claim 32 further comprising ammonium cocoyl isethionate as a secondary solubilizer.

36. The composition of claim 35 wherein the ammonium cocoyl isethionate is selected from the group consisting of sodium cocoyl isethionate, ammonium cocoyl isethionate and mixtures thereof.

37. The composition of claim 35, wherein the solubilizing agent is a mixture of: (i) a block polymer surfactant selected from the group consisting of MEROXAPOL block polymer surfactants, POLOXAMER block polymer surfactants, and POLOXAMINE block polymer surfactants, (ii) polyvinyl alcohol, and (iii) ammonium cocoyl isethionate.

38. The composition of claim 1, wherein the composition is a microemulsion comprising a volatile agent in the form of nanosized droplets dispersed therein.

39. The composition of claim 1, wherein the film former is selected from the group consisting of acrylamide/DMAPA acrylate/methoxy PEG methacrylate copolymer, acrylamide/sodium acrylate copolymer, acrylamide/sodium acryloyldimethyl taurate copolymer, acrylate/acrylamide copolymer, acrylate/t-butyl acrylamide copolymer.

40. The composition of claim 1 wherein the film forming agent is selected from the group consisting of AVALURE AC115, AVALURE AC118, AVALURE AC120, AVALURE AC125, AVALURE AC210, and AVALURE AC315 from BF Goodrich; COVACRYL a15 and COVACRYL E14 for LCW; DAITOSOL5000 AD by DaitoKasei; acrylate/C1-2 succinate/hydroxyacrylate copolymer; acrylate/polydimethylsiloxane copolymers; acrylate/polydimethylsiloxane methacrylate/ethylhexyl acrylate copolymers; acrylate/dimethylaminoethyl methacrylate copolymers; acrylate/ethylhexyl acrylate copolymers; acrylate/ethylhexyl acrylate/HEMA/styrene copolymer; acrylate/hydroxy ester acrylate copolymers; acrylate/lauryl acrylate/stearyl acrylate/ethyl amine oxide methacrylate copolymers; acrylate/octylacrylamide copolymers; acrylate/propyltrimethicone methacrylate copolymers; acrylate/stearyl acrylate/polydimethylsiloxane methacrylate copolymers; acrylate/VP copolymers; and acrylate/VP/dimethylaminoethyl methacrylate/diacetone acrylamide/hydroxypropyl acrylate copolymer.

41. The composition of claim 1 wherein the film former is selected from the group consisting of sodium acrylate copolymers, sodium acryloyldimethyl taurate copolymers, ethyl methacrylate/n-butyl acrylate/2-methylhexyl acrylate copolymers, and butyl acrylate/hydroxyethyl methacrylate copolymers.

42. The composition of claim 1, wherein said film former is selected from the group consisting of polyurethane-1, polyurethane-2, polyurethane-3, polyurethane-4, polyurethane-5, polyurethane-6, polyurethane-7, polyurethane-8, polyurethane-9, polyurethane-10, polyurethane-11, polyethylene, oxidized polyethylene, polypropylene, tetramethyltetraphenyltrisiloxane, melissyl trimethyl pentaphenyl trisiloxane, styrene/MA copolymer, styrene/DVB copolymer, quaternary ammonium synthetic polymer, and cross-linked polymer.

43. The composition of any one of claims 31-33, wherein the amount of primary solubilizer is in the range of 5% to 20%.

44. A method of imparting a volumizing effect to hair of the hair, eyebrows, or eyelashes comprising contacting the hair with the composition of claim 1 for a time sufficient to achieve said effect.