Patent Application
20050136027
The present disclosure relates to novel cosmetic hair compositions comprising isoeicosane and at least one silicone fixing polyurethane. It also relates to a cosmetic process, for instance, a process for fixing and/or holding the hairstyle using the compositions disclosed herein, and also for giving the hair a sheen.
It is known to use isoeicosane, a nonvolatile hydrocarbon-based oil, as a conditioning agent in cosmetic hair compositions. For example, patent application FR 2,815,853 describes cosmetic hair compositions in the form of a mousse and comprising at least one aminoplast backbone polymer, with isoeicosane as a possible conditioning agent.
However, there is a need for hair products that can make it possible to give the hair some hold and a long lasting appearance of sheen, without making it too markedly greasy in nature. Such properties are not necessarily provided by the compositions of the state of the art.
Thus, the present disclosure proposes to provide a solution to this deficiency.
For instance, the present inventors have found that compositions comprising isoeicosane and at least one silicone fixing polyurethane may not exhibit all the drawbacks indicated above, and can, for example, fix the hairstyle very well, while providing good cosmetic properties. For example, these compositions can adhere well to the hair and can, for instance, make the hair smooth to the touch. It has also been noted that these compositions can give the hair an intense and persistent sheen. Finally, the compositions as disclosed herein can be formulated in alcoholic medium.
Other aspects of the present disclosure will emerge on reading the description and examples which follow.
One aspect of the present disclosure is therefore a cosmetic hair composition, comprising, in a cosmetically acceptable medium, isoeicosane and at least one silicone fixing polyurethane.
Another aspect of the present disclosure concerns a cosmetic hair process, for instance, a process for fixing and/or holding a hairstyle using the compositions as disclosed herein.
Still another aspect of the present disclosure is the use of the compositions disclosed herein for giving the hair a sheen.
Isoeicosane is a hydrocarbon which is liquid at ambient temperature. It may for example, be the commercial product sold under the name PERMETHYL 102 A by the company Bayer.
The isoeicosane may be present in the composition in an amount, for example, ranging from 0.05 to 20% by weight, relative to the total weight of the composition, such as ranging from 1 to 10% of the total weight of the composition.
For the purpose of the present disclosure, the term “fixing polymer” means any polymer which makes it possible to give shape to the hair or to maintain the shape.
The silicone fixing polyurethanes of the present disclosure may be chosen from amphoteric, anionic and nonionic polyurethanes; for example, they may be chosen from anionic and non-ionic polyurethanes. Such polymers are, for example, described in French Patent Nos. FR 2,708,199 and FR 2,743,297.
By way of non-limiting example, the silicone fixing polyurethane may be made up of an arrangement of blocks, this arrangement may be obtained for instance from:
For instance, the compounds (1) may be chosen from diols, diamines, polyesterols, polyetherols, and mixtures thereof.
In one embodiment, for example, among the compounds (1) which may used, non-limiting mention may be made of linear polyethylene glycols and polypropylene glycols, such as those which are obtained by reaction of ethylene oxide or propylene oxide with water or diethylene or dipropylene glycol in the presence of sodium hydroxide as catalyst. These polyalkylene glycols generally have a molecular mass ranging from 600 to 20,000.
In another embodiment, organic compounds comprising mercapto, amino, carboxyl or hydroxyl groups may also be used. Among these, non-limiting mention may be made for instance, of polyhydroxylated compounds such as polyether diols, polyester diols, polyacetal diols, polyamide diols, polyesterpolyamide diols, poly(alkylene ether) diols, polythioether diols and polycarbonate diols.
Among the polyether diols, for example, non-limiting mention may be made of the condensation products of ethylene oxide, of propylene oxide or of tetrahydrofuran, their copolymerization or condensation products, which may be grafted or blocks, such as mixtures of condensates of ethylene oxide and propylene oxide, and the products of polymerization of olefins, at high pressure, with alkylene oxide condensates. Suitable polyethers include, for example, those prepared by condensation of alkylene oxides and polyhydric alcohols, such as ethylene glycol, 1,2-propylene glycol and 1,4-butanediol.
The polyester diols, polyesteramides, and polyamide diols may be, for example, saturated and can be obtained, for example, from the reaction of saturated or unsaturated polycarboxylic acids with polyhydric alcohols, diamines or polyamines. Adipic acid, succinic acid, phthalic acid, terephthalic acid and maleic acid can be used, for example, to prepare these compounds. Polyhydric alcohols that are suitable for preparing the polyesters include, for example, ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, neopentyl glycol and hexanediol. Amino alcohols, for example ethanolamine, can also be used. Diamines which are suitable for preparing the polyesteramides include ethylenediamine and hexamethylenediamine.
Suitable polyacetals can be prepared, for example, from 1,4-butanediol or from hexanediol and from formaldehyde. Suitable polythioethers can be prepared, for example, by condensation reaction between thioglycols, alone or in combination with other glycols such as ethylene glycol or 1,2-propylene glycol or with other polyhydroxylated compounds. Polyhydroxylated compounds comprising urethane groups, natural polyols, which can be further modified, for example, castor oil and carbohydrates, can also be used.
In one embodiment, the compound of group (1) may be a polyesterol, such as a polyester diol formed by the reaction of at least one (di)polyol (1a) and at least one acid (1b). The (di)polyol (1a) may, for instance, be chosen from neopentyl glycol, 1,4-butanediol, hexanediol, ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, neopentyl glycol and (di)polyethylene glycol. The acid (1b) may, for instance, be chosen from phthalic acid, isophthalic acid, adipic acid and (poly)lactic acid.
A hydroxycarboxylic acid such as dimethylolpropanoic acid (DMPA) or a 2,2-hydroxymethylcarboxylic acid can, for example, be used as compound (2). In general, compound (2) is useful as a coupling block. In one embodiment of the present disclosure, the compounds (2) are those comprising at least one poly((alpha-hydroxydiolcarboxylic) acid). In another embodiment of the present disclosure, the compounds (2) are chosen from 2,2-di(hydroxymethyl)acetic acid, 2,2-dihydroxymethylpropionic acid, 2,2-dihydroxymethylbutyric acid and 2,2-dihydroxymethylpentanoic acid.
The di- or polyisocyanate (3) can be chosen for example, from hexamethylene diisocyanate, isophorone diisocyanate (IPDI), tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate (DPMD), 4,4′-dicyclohexylmethane diisocyanate (DCMD), methylenebis(p-phenyl) diisocyanate, methylenebis(4-cyclohexyl isocyanate), toluene diisocyanates, 1,5-naphthalene diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,2′-dimethyl-4,4′-diphenylmethane diisocyanate, 1,3-phenylene diisocyanate, 1,4-phenylene diisocyanate, mixtures of 2,4- and 2,6-toluene diisocyanates, 2,2′-dichloro-4,4′-diisocyanatodiphenylmethane, 2,4-dibromo-1,5-diisocyanatonaphthalene, 1,4-butane diisocyanate, 1,6-hexane diisocyanate and 1,4-cyclohexane diisocyanate.
The compound having a silicone backbone (4) can be chosen from polysiloxanes, polyalkylsiloxanes and polyarylsiloxanes, for instance, polyethylsiloxanes, polymethylsiloxanes and polyphenylsiloxanes, optionally comprising hydrocarbon-based chains grafted onto the silicon atoms.
The fixing polyurethane can be formed using an additional compound (5) that generally serves to extend its chain. These compounds (5) can be chosen from for example, saturated and unsaturated glycols such as ethylene glycol, diethylene glycol, neopentyl glycol and triethylene glycol; amino alcohols such as ethanolamine, propanolamine and butanolamine; heterocyclic, aromatic, cycloaliphatic and aliphatic primary amines; diamines; carboxylic acids such as aliphatic, aromatic and heterocyclic carboxylic acids, for instance oxalic acid, succinic acid, glutaric acid, adipic acid, sebacic acid and terephthalic acid; and amino carboxylic acids. In one embodiment of the present disclosure, the compounds (5) are aliphatic diols.
The at least one silicone fixing polyurethane used in the present disclosure can, for example, comprise at least one polysiloxane sequencewith a repeating base unit that corresponds, for example, to formula (II):
—O—P—O—CO—NH—R—NH—CO— (II)
wherein:
By way of non-limiting example, the polysiloxane segment P may correspond to formula (III):
wherein:
For instance, the divalent group Y may be chosen from alkylene groups of formula —(CH2)a—, in which “a” is an integer ranging from 1 to 10.
The groups A can be chosen from alkyl groups, such as methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, octyl, decyl, dodecyl and octadecyl groups; cycloalkyl groups, such as cyclohexyl groups; aryl groups, for instance phenyl and naphthyl; arylalkyl groups, such as benzyl, phenylethyl, tolyl and xylyl groups.
By way of examples of silicone fixing polyurethane, non-limiting mention may be made, for example, of the dimethylolpropionic acid/isophorone diiso-cyanate/neopentyl glycol/silicone-comprising polyesterdiols/diamine copolymer (also known as polyurethane-6, INCI name) sold under the trademark Luviset® Si PUR by the company BASF.
The at least one silicone fixing polyurethane may be present in the composition in an amount ranging from 0.01 to 20% by weight, such as from 0.05 to 15%, and for instance, from 0.1 and 10% by weight, relative to the total weight of the composition.
The compositions according to the present disclosure can also comprise at least one additional fixing polymer different from the silicone fixing polyurethanes described above. The at least one additional fixing polymer that are suitable in the present disclosure include those chosen from cationic, anionic, amphoteric and nonionic polymers.
The cationic additional fixing polymers which can be used according to the present disclosure may be chosen from, for example, polymers comprising primary, secondary, tertiary and/or quaternary amine groups which are part of the polymer chain or directly connected thereto, and which have a number-average molecular mass ranging from 500 to 5,000,000, such as from 1,000 to 3,000,000.
Among these polymers, non-limiting mention may be made, for example, of the following cationic polymers:
The copolymers of family (1) also comprise at least one unit derived from comonomers that can be chosen from acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen with lower (C1-4) alkyl groups, groups derived from acrylic or methacrylic acids or esters thereof, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, and vinyl esters.
Among the copolymers of family (1), non-limiting mention may be made of:
Among these compounds, non-limiting mention may be made of the chitosan having a degree of deacetylation of 90.5% by weight, sold under the name KYTAN BRUT STANDARD by the company Aber Technologies, and the chitosan pyrrolidonecarboxylate sold under the name Kytamer® PC by the company Amerchol;
The marketed products corresponding to this definition include the products sold under the names “CELQUAT L 200” and “CELQUAT H 100” by the company National Starch.
The anionic additional fixing polymers that may be used are polymers comprising groups derived from carboxylic, sulphonic or phosphoric acid, and have a number-average molecular mass ranging from 500 to 5,000,000.
The carboxylic groups are provided by unsaturated monocarboxylic and dicarboxylic acid monomers such as those corresponding to the formula (I):
wherein n is an integer ranging from 0 to 10, A1 is a methylene group optionally linked to the carbon atom of the unsaturated group, or to the neighboring methylene group when n is greater than 1, by a hetero atom such as oxygen or sulphur, R7 is chosen from a hydrogen atom, and phenyl and benzyl groups, R8 is chosen from a hydrogen atom, and lower alkyl and carboxyl groups, R9 is chosen from a hydrogen atom, lower alkyl groups, —CH2—COOH groups, phenyl groups and benzyl groups.
In the context of the abovementioned formula (I), a lower alkyl group may be a group having 1 to 4 carbon atoms, such as methyl and ethyl groups.
Among the anionic fixing polymers comprising carboxylic groups that may be used according to the present disclosure, non-limiting mention made be made of:
A) homopolymers or copolymers of acrylic or methacrylic acid or their salts, for instance, the products sold under the names Versicol® E or K by the company Allied Colloid, and Ultrahold® by the company BASF, copolymers of acrylic acid and of acrylamide sold in the form of their sodium salts, under the names RETEN 421, 423 or 425 by the company Hercules, sodium salts of polyhydroxycarboxylic acids.
B) Copolymers of acrylic or methacrylic acid with a monoethylenic monomer such as ethylene, styrene, vinyl esters, esters of acrylic or methacrylic acid, optionally grafted with a polyalkylene glycol such as polyethylene glycol, and optionally crosslinked. Such polymers are described for example, in French Patent No.1,222,944 and the German patent application No.2,330,956; the copolymers of this type comprise in their chain an optionally N-alkylated and/or hydroxyalkylated acrylamide unit, as described for instance in the Luxembourg patent application Nos. 75370 and 75371, or proposed under the name QUADRAMER by the company American Cyanamid. Non-limiting mention may also be made of copolymers of acrylic acid and of C1-C4 alkyl methacrylate and terpolymers of vinylpyrrolidone, of acrylic acid and of C1-C20 alkyl, for example lauryl, methacrylate, such as the product sold by the company ISP under the name Acrylidone® LM and methacrylic acid/ethyl acrylate/tert-butyl acrylate terpolymers such as the product sold under the name Luvimer® 100 P by the company BASF.
Further non-limiting mention may also be made of the methacrylic acid/acrylic acid/ethyl acrylate/methyl methacrylate copolymers in aqueous dispersion, sold under the name Amerhold® DR 25 by the company Amerchol.
C) Crotonic acid copolymers, such as those comprising in their chain vinyl acetate or propionate units, and optionally other monomers such as the allyl or methallyl esters, vinyl ether or vinyl ester of a linear or branched, saturated carboxylic acid comprising a long hydrocarbon-based chain, for instance those comprising at least 5 carbon atoms, it being possible for these polymers to be optionally grafted or crosslinked, or else another monomer of a vinyl, allyl or methallyl ester of an α- or β-cyclic carboxylic acid. Such polymers are described, inter alia, in French Patent Nos. 1,222,944, 1,580,545, 2,265,782, 2,265,781, 1,564,110 and 2,439,798. Commercial products which fall into this class include the resins 28-29-30, 26-13-14 and 28-13-10 sold by the company National Starch.
D) Copolymers of monounsaturated C4-C8 carboxylic acids or anhydrides, chosen from:
E) Polyacrylamides comprising carboxylate groups.
The homopolymers and copolymers comprising sulphonic groups are polymers comprising vinylsulphonic, styrenesulphonic, naphthalenesulphonic or acrylamido-alkylsulphonic units.
By way of non-limiting example, these polymers can be, for example, chosen from:
As another anionic additional fixing polymer which can be used according to the present disclosure, non-limiting mention may be made of the anionic branched block polymer sold under the name FIXATE G100 by the company Noveon.
According to the present disclosure, the anionic additional fixing polymers may also be chosen from, for example, acrylic acid copolymers such as the acrylic acid/ethyl acrylate/N-tert-butylacrylamide terpolymers sold for instance under the name Ultrahold® Strong by the company BASF, copolymers derived from crotonic acid such as the vinyl acetate/vinyl tert-butylbenzoate/crotonic acid terpolymers and the crotonic acid/vinyl acetate/vinyl neododecanoate terpolymers sold, for example, under the name RÉSINE 28-29-30 by the company National Starch, polymers derived from maleic, fumaric or itaconic acids or anhydrides with vinyl esters, vinyl ethers, vinyl halides, phenylvinyl derivatives, acrylic acid and its esters, such as the methyl vinyl ether/monoesterified maleic anhydride copolymers sold, for example, under the name Gantrez® by the company ISP, the copolymers of methacrylic acid and of methyl methacrylate sold under the name Eudragit® L by the company Rohm Pharma, the copolymers of methacrylic acid and of ethyl acrylate sold under the name Luvimer® MAEX or MAE by the company BASF, vinyl acetate/crotonic acid copolymers such as those sold under the name Luviset® CA 66 by the company BASF, the vinyl acetate/crotonic acid copolymers grafted with polyethylene glycol sold under the name Aristoflex® A by the company BASF, and the polymer sold under the name FIXATE G100 by the company Noveon.
Among the anionic additional fixing polymers mentioned above, non-limiting mention may be made of the monoesterified methyl vinyl ether/maleic anhydride copolymers sold under the name Gantrez® ES 425 by the company ISP, the acrylic acid/ethyl acrylate/N-tert-butylacrylamide terpolymers sold under the name Ultrahold® Strong by the company BASF, the copolymers of methacrylic acid and of methyl methacrylate sold under the name Eudragit® L by the company Rohm Pharma, the vinyl acetate/vinyl tert-butylbenzoate/crotonic acid terpolymers, the crotonic acid/vinylacetate/vinyl neododecanoate terpolymers sold under the name RÉSINE 28-29-30 by the company National Starch, the copolymers of methacrylic acid and of ethyl acrylate sold under the name Luvimer® MAEX or MAE by the company BASF, the vinylpyrrolidone/acrylic acid/lauryl methacrylate terpolymers sold under the name Acrylidone® LM by the company ISP, and the polymer sold under the name FIXATE G100 by the company Noveon.
The amphoteric additional fixing polymers that can be used in accordance with the present disclosure can be chosen from polymers comprising B and C units distributed randomly in the polymer chain, wherein B is a unit derived from a monomer comprising at least one basic nitrogen atom and C is a unit derived from an acid monomer comprising at least one group chosen from carboxylic and sulphonic groups, or alternatively, B and C can be groups derived from zwitterionic monomers of carboxybetaines or of sulphobetaines.
B and C can also be a cationic polymer chain comprising primary, secondary, tertiary or quaternary amine groups, in which at least one of the amine groups bears a carboxylic or sulphonic group linked via a hydrocarbon-based group, or alternatively, B and C are part of a chain of a polymer comprising ethylene-α,β-dicarboxylic units, one of the carboxylic groups of which has been brought to react with a polyamine comprising at least one primary or secondary amine group.
Among the amphoteric fixing polymers that correspond to the definition given above, non-limiting examples include the following polymers:
The N-substituted acrylamides or methacrylamides according to the present disclosure may be, for example, the compounds in which the alkyl groups comprise from 2 to 12 carbon atoms, such as N-ethylacrylamide, N-tert-butylacrylamide, N-tert-octylacrylamide, N-octylacrylamide, N-decylacrylamide and N-dodecylacrylamide, and also the corrresponding methacrylamides.
By way of non-limiting example, the acidic comonomers may be chosen from, for example, acrylic acid, methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, and also the alkyl monoesters, having from 1 to 4 carbon atoms, of maleic and fumaric acids and anhydrides.
In one embodiment of the present disclosure, the basic comonomers are aminoethyl, butylaminoethyl, N,N′-dimethylaminoethyl and N-tert-butylaminoethyl methacrylates.
In another embodiment of the present disclosure, the copolymers whose CTFA (4th edition, 1991) name is octylacrylamide/acrylates/butylaminoethyl methacrylate copolymer, such as the products sold under the name Amphomer® or Lovocryl® 47 by the company National Starch, are used;
The saturated carboxylic acids may be chosen from, for example, acids having 6 to 10 carbon atoms, such as adipic acid, 2,2,4-trimethyladipic acid, and 2,4,4-trimethyladipic acid; terephthalic acid; and acids containing an ethylenic double bond, for instance acrylic acid, methacrylic acid and itaconic acid.
The alkane sultones used in the acylation may be, for example, propane sultone or butane sultone, and the salts of the acylating agents may be, for instance sodium or potassium salts;
By way of example, non-limiting mention may be made of methyl methacrylate/methyl dimethylcarboxymethylammonioethylmethacrylate copolymers, such as the product sold under the name DIAFORMER Z301 by the company Sandoz;
Among the amphoteric additional fixing polymers described above that may be used according to the present disclosure, non-limiting mention may be made of those of family (3), such as copolymers whose CTFA name is octylacrylamide/acrylates/ butylaminoethyl methacrylate copolymer, such as the products sold under the names Amphomer®, Amphomer® LV 71 or Lovocryl® 47 by the company National Starch and those of family (4), such as methyl methacrylate/methyl dimethylcarboxymethyl-ammonioethylmethacrylate copolymers sold, for example, under the name Diaformer® Z301 by the company Sandoz.
The nonionic additional fixing polymers that can be used according to the present disclosure are chosen, for example, from:
In one embodiment of the present disclosure, the alkyl groups in the nonionic polymers mentioned above have from 1 to 6 carbon atoms.
According to the present disclosure, use may also be made of additional fixing polymers of grafted silicone type, comprising a polysiloxane portion and a portion comprising a nonsilicone organic chain, one of the two portions constituting the main chain of the polymer and the other being grafted onto said main chain. These polymers are, for example, described in patent applications EP-A-0 412 704, EP-A-0 412 707, EP-A-0 640 105 and WO 95/00578, EP-A-0 582 152 and WO 93/23009 and U.S. Pat. Nos. 4,693,935; 4,723,571 and 4,972,037. These polymers may be chosen from amphoteric, anionic and nonionic polymers, such as anionic or nonionic polymers.
Such polymers are, for example, the copolymers which can be obtained by free-radical polymerization using the mixture of monomers made up of:
Other non-limiting examples of grafted silicone polymers include polydimethylsiloxanes (PDMSs) onto which are grafted, via a thiopropylene-type connecting chain, mixed polymer units of the poly((meth)acrylic acid) type and of the poly(alkyl (meth)acrylate) type, and polydimethylsiloxanes (PDMSs) onto which are grafted, via a thiopropylene-type connecting chain, polymer units of the isobutyl poly(meth)acrylate type. Additional fixing polymers that may also be used include functionalized or nonfunctionalized, nonsilicone, cationic, nonionic, anionic or amphoteric polyurethanes, or mixtures thereof.
Among the polyurethanes that may be used according to the present disclosure are those described in applications EP 0 751 162, EP 0 637 600, EP 0 648 485 and FR 2,743,297, from the company L'Oreal, and also in applications EP 0 656 021 and WO 94/03510 from the company BASF, and EP 0 619 111 from the company National Starch.
Among other polyurethanes which may be suitable in the present disclosure, non-limiting mention may be made of the product sold under the name Luviset Pur® by the company BASF.
The cosmetically acceptable medium comprises, for example, water, or at least one cosmetically acceptable solvent, such as alcohols, or water-solvent(s) mixtures. In one embodiment of the present disclosure, the solvents are chosen from C1-C4 alcohols,
The composition as disclosed herein can also contain at least one additive chosen from nonionic, anionic, cationic, amphoteric and zwitterionic surfactants; fragrances; screening agents; preserving agents; proteins; vitamins; nonionic, anionic, cationic, amphoteric and zwitterionic polymers other than the fixing polymers described above; mineral, plant and synthetic oils; and any other additive conventionally used in cosmetic compositions, such as anti-dandruff agents, anti-hairloss agents, dyes, pigments, moisturizers such as glycerol and the like, polyols, and reducing agents.
These additives may be present in the composition in an amount ranging from 0.001 to 20% by weight of the total weight of the composition. The precise amount of each additive depends on its nature and is readily determined by those skilled in the art, and will depend on the chosen hair application. Of course, those skilled in the art will take care to choose the additive(s) in such a way that the advantageous properties of the composition in accordance with the present disclosure are not, or are not substantially, altered by the envisaged addition.
The compositions of the invention can be used for producing many hair products, such as, for example, products for fixing and/or holding the hair, conditioning products, such as sheen formulations, or else haircare products.
These compositions can be packaged in various forms, such as pump-dispenser bottles or aerosol containers, in order to provide composition application in sprayed form or in mousse form. Such packaging forms are indicated, for example, when it is desired to obtain a spray, a lacquer, or a mousse for fixing or treating the hair. The compositions in accordance with the present disclosure can also be in the form of creams, gels, emulsions or lotions.
When the composition as disclosed herein is packaged in the form of an aerosol for the purpose of obtaining a lacquer or a mousse, it further comprises at least one propellant that can be chosen from volatile hydrocarbons such as n-butane, propane, isobutane, pentane, a halogenated hydrocarbon and mixtures thereof. As a propellant, use may also be made of carbon dioxide, nitrous oxide, dimethyl ether (DME), nitrogen and compressed air. Mixtures of propellants may also be used. In one embodiment of the present disclosure, the propellant is dimethyl ether.
The propellant may be present in the composition in an amount ranging from 5 to 90% by weight, relative to the total weight of the composition in the aerosol device, for instance, from 10 to 60%.
Other than in the operating examples, or where otherwise indicated, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should be construed in light of the number of significant digits and ordinary rounding approaches.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
The following examples are intended to illustrate the invention in a non-limiting manner.
Composition A below was applied to a lock of natural euro-chestnut hair of 5 grams.
(1) isoeicosane sold by the company Bayer
(2) Polyurethane 6 (isophthalic acid/adipic acid/hexylene glycol/neopentyl glycol/dimethylpropanoic acid/isophorone diisocyanate/bisethylaminoisobutyldimethicone copolymer), sold by the company BASF.
Composition A was applied to natural hair using a pump-dispenser bottle. After drying, it was observed that the lock had good hold, a sheen, was soft to the touch, and had a pleasant appearance.
Composition B below was applied to a lock of natural euro-chestnut hair of 5 grams.
(1) isoeicosane sold by the company Bayer
(2) cyclopentadimethylsiloxane sold by the company Dow Corning
(3) oxyethylenated oxypropylenated polydimethyl/methylsiloxane sold by the company Dow Corning
(4) Polyurethane 6 (isophthalic acid/adipic acid/hexylene glycol/neopentyl glycol/dimethyloipropanoic acid/isophorone diisocyanate/bisethylaminoisobutyldimethicone copolymer), sold by the company BASF.
Composition B was applied to natural hair using a pump-dispenser bottle. After drying, it was observed that the lock had good hold, a sheen, was soft to the touch, and had a pleasant appearance.
| Number | Date | Country | Kind |
|---|---|---|---|
| 0307289 | Jun 2003 | FR | national |
This application claims benefit of U.S. Provisional Application No. 60/505,166, filed Sep. 24, 2003.
| Number | Date | Country | |
|---|---|---|---|
| 60505166 | Sep 2003 | US |
