Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
2002-03-28
2004-10-05
Peng, Kuo-Liang (Department: 1712)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C528S044000, C528S068000, C528S071000, C528S085000, C528S038000, C525S452000, C525S474000, C524S507000, C424S070110
Reexamination Certificate
active
06800276
ABSTRACT:
The present invention relates to polyureas and water-soluble or water-dispersible polymeric salts, to the use of these polymers, and to compositions which comprise these polymers.
In cosmetics, polymers with film-forming properties are used for setting, shaping and improving the structure of hair. These hair-treatment compositions generally comprise a solution of the film former in an alcohol or a mixture of alcohol and water.
Hair-treatment compositions, in particular hair-setting compositions, are generally sprayed onto the hair in the form of aqueous-alcoholic solutions. After the solvent has evaporated, the hair is held in the desired shape at the mutual points of contact by the polymer which remains. The polymers should on the one hand be sufficiently hydrophilic that they can be washed out of the hair, but on the other hand they should be hydrophobic so that the hair treated with the polymers retains its shape even at high atmospheric humidity, and does not stick together. In order to obtain as highly an efficient hair-setting action as possible, it is also desirable to use polymers which have a relatively high molecular weight and a relatively high glass transition temperature (at least 10° C.).
A further current demand on hair-treatment compositions is that they should give the hair flexibility, a natural appearance and shine, even, for example, when the hair is by its very nature particularly strong and/or dark.
A further consideration when formulating hair-setting compositions is that, because of the environmental regulations governing the emission of volatile organic compounds (VOC) into the atmosphere, it is necessary to reduce the content of alcohol and propellant.
It is known to use water-soluble or dispersible polyurethanes in cosmetics. Thus, because, for example, they have film-forming properties and, in general, a low viscosity in water/ethanol, they are suitable for use in hair cosmetics, such as, for example, for formulating low-solvent hair sprays.
DE-A-42 25 045 and WO 94/03515 describe the use of water-soluble or water-dispersible anionic polyurethanes as hair-setting agents.
The acid groups present in these polyurethanes can be converted into the corresponding salts by neutralization with at least one base. For this purpose, low molecular weight amines, such as 2-amino-2-methylpropanol, diethylaminopropylamine and triisopropanolamine, are used.
EP-A-619 111 describes the use of polyurethanes based on organic diisocyanates, diols and 2,2-hydroxymethyl-substituted carboxylates in hair fixative compositions. Here, at least some of the carboxyl groups are neutralized with an organic or inorganic low molecular weight base.
DE-A-195 41 658 describes water-soluble or water-dispersible graft polymers of a polyurethane prepolymer having terminal isocyanate groups and a protein containing free amino groups.
EP-A-636 361 describes a cosmetic composition comprising, in a cosmetically compatible carrier, at least one pseudolatex based on a polycondensate which comprises at least one polysiloxane unit and at least one polyurethane and/or polyurea unit having anionic or cationic groups. The neutralizing agents used here are mineral bases, low molecular weight amines and aminoalcohols, mineral acids and low molecular weight carboxylic acids. WO 97/25021 has a similar disclosure content. The wash-off of these film formers is unsatisfactory. In addition, because they have a high siloxane content they do not have the setting action required of a hair polymer.
DE-A-195 41 329 and WO 97/17052 describe hair-treatment compositions comprising a hair-setting polymer which is soluble or dispersible in water or in a water/alcohol mixture, and additionally a water-soluble or -dispersible siloxane-containing salt. Hairspray formulations based on these siloxane-containing salts, a non-siloxane-containing hair-setting polymer and a silicone oil lead to very smooth films.
DE-A-195 41 326 and WO 97/17386 describe water-soluble or water-dispersible polyurethanes having terminal acid groups, their preparation and their use. Here, a water-soluble or -dispersible polyurethane prepolymer having terminal isocyanate groups is reacted with an aminosulfonic acid or aminocarboxylic acid, in particular taurine, aspartic acid and glutamic acid.
DE-A-197 09 277 relates to polysiloxane-containing hair-setting compositions comprising from 0.5 to 15% by weight of carboxyl-containing polymers which, in neutralized form, are water-soluble or water-dispersible. The neutralizing agents used here are alkali metal carbonates, ammonia and amines and amino alcohols having at most 3 carbon atoms in the longest carbon chain.
None of the abovementioned documents describes polymeric salts of a polymeric cation and a polymeric anion, where polyurea or polyurethane is the polymeric anion and/or the polymeric cation. The polyurethanes described above lead to films which are in need of improvement with regard to their flexibility and thus with regard to the suppleness imparted to the hair.
It is known to use copolymers based on &agr;,&bgr;-ethylenically unsaturated mono- and/or dicarboxylic acids in haircare compositions,
GB-A-1 321 836 describes hair-setting compositions based on copolymers which comprise an unsaturated dicarboxylic acid and a vinyl or vinylidene monomer in copolymerized form. From 5 to 20% of the carboxyl groups have been neutralized with primary C
4
- to C
16
-amines.
DE-A-29 17 504 describes an aerosol hairspray based on a copolymer of at least one unsaturated monocarboxylic acid and at least one vinyl or vinylidene monomer. Here, at least 7 to 100% of the carboxyl groups have been neutralized, at least half of which with a long-chain primary, secondary and/or tertiary amine having from 8 to 20 carbon atoms in the longest chain.
WO 89/12438 describes a hair-setting composition based on a hair polymer containing carboxyl groups which have been neutralized to at least 40 mol % with a long-chain amine chosen from amidoamines, N-ethoxylated amines and ether amines.
The abovementioned polyacrylates having carboxyl groups which have been neutralized with fatty amines or ethoxylated fatty amines lead to soft, tacky films with a drastically reduced setting action. These polymers are therefore of only very limited suitability for use as hair-setting agents.
JP-A-7127480 describes a hair-treatment composition based on an amine salt solution of a copolymer which comprises an unsaturated carboxylic acid in copolymerized form.
JP-A-03206023 describes a polymer resin for hair-treatment compositions which comprises, in copolymerized form, a) 6 to 35% by weight of acrylic acid, methacrylic acid, itaconic acid or a mixture thereof, b) 15 to 50% by weight of at least one C
10
- to C
18
-alkyl (meth)acrylate, c) 15 to 50% by weight of at least one C
4
- to C
8
-alkyl (meth)acrylate and d) 0 to 25% by weight of at least one other hydrophobic vinyl monomer. The resulting copolymers are neutralized with a base chosen from ammonia, morpholine, isopropanolamine and aminoethylpropanediol.
JP-A-03206024 describes a hair-setting polymer similar to that in JP-A-03206023, which additionally comprises from 5 to 50% by weight of an N-alkyl-substituted acrylamide. The hair-setting polymers described in both of these documents have a high content of hydrophobic monomers. Their wash-off is therefore in need of improvement.
DE-A-39 01 325 and DE-A-42 14 305 describe hair-setting compositions which comprise, as film former, a copolymer based on tert-butyl (methy)acrylate and (meth)acrylic acid, where the carboxyl groups of the copolymers have been partially or completely neutralized by amines. Here, the amines are chosen from mono-, di- or trialkanolamines, alkanediolamines or primary, secondary or tertiary alkylamines. Films based on these polyacrylates are generally hard and do not exhibit flexibility and, particularly with regard to their setting action, are in need of improvement.
DE-A-197 09 277 describes polysiloxane-containing hair setting compositions based on carboxyl-containing polymers, polysiloxanes having primary, sec
Hössel Peter
Kim Son Nguyen
Sanner Axel
BASF - Aktiengesellschaft
Keil & Weinkauf
Peng Kuo-Liang
LandOfFree
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