Abstract: The present invention relates to a mono- and/or polyallyl-polyether-urethane, to water-soluble or water-dispersible polymers which comprise such a polyether-urethane in copolymerized form, and to cosmetic or pharmaceutical compositions which comprise a water-soluble or water-dispersible polymer based on a mono- and/or polyallyl-polyether-urethane.

Abstract: The present invention relates to polymers obtainable by free-radical polymerization of a) 30 to 99% by weight of tert-butyl acrylate and/or tert-butyl methacrylate as monomer A, b) 1 to 70% by weight of acrylic acid and/or methacrylic acid as monomer B and c) 0 to 12% by weight of a free-radically copolymerizable monomer or a free-radically copolymerizable monomer mixture as monomer C, where at least one of the monomers C produces a homopolymer with a glass transition temperature of less than 30° C., with the proviso that the % by weight add up to 100, where the K value of the polymers is between 27 and 38 and where the polymerization is carried out in the presence of a regulator if the K value of the polymers is less than or equal to 35, and to the use of these polymers in preparations for, in particular, cosmetics and oral care and dental care.

Abstract: Copolymers prepared by a process comprising free-radical polymerizing: (a) more than 15 to 40% by weight of at least one monoethylenically unsaturated carboxylic acid; (b) 30 to less than 85% by weight of ethyl methacrylate; and (c) 0 to 50% by weight of at least one additional free-radically polymerizable monomer other than the at least one monoethylenically unsaturated carboxylic acid and ethyl methacrylate; wherein the total amount of (a), (b) and (c) equals 100% by weight; with the proviso that where the process comprises a solution polymerization, (a) consists of acrylic acid and methacrylic acid, and (c) is an ester of (meth)acrylic acid and an aliphatic C8-C18-alcohol, then the ester of (meth)acrylic acid and an aliphatic C8-C18-alcohol is not present in an amount of 5 to 40% by weight; and with the proviso that where (c) is selected from the group consisting of N-vinylpyrrolidone, N-vinylcaprolactam and mixtures thereof; then the N-vinylpyrrolidone, N-vinylcaprolactam or mixture thereof is present in

Abstract: The present invention relates to cosmetic and pharmaceutical compositions which comprise a copolymer with anionogenic and/or anionic groups which is obtainable by free-radical polymerization of a monomer mixture in the presence of a polyfunctional regulator with at least three functional regulating groups. The invention further relates to a method of producing such a copolymer and to the copolymers obtainable by this method.

Abstract: The present invention relates to the use of, if appropriate present in the form of an aqueous dispersion, polymers of ethylenically unsaturated anionic monomers for modifying the rheology of aqueous, alcoholic or aqueous/alcoholic cosmetic or dermatological compositions. The polymers are obtainable by free-radical emulsion copolymerization of water-soluble inorganic monomers in aqueous phase in the presence of, in each case, at least one stabilizing polymer of groups a) and b). The emulsion polymers are exceptionally suitable for thickening cosmetic or dermatological preparations based either on water or on alcohols.

Abstract: The present invention relates to the use of a water-soluble or water-dispersible crosslinked polymer obtainable by the polymerization of a mixture comprising 99.99 to 10% by weight of at least one ?,?-ethylenically unsaturated compound having at least one cationogenic and/or cationic group per molecule, 0 to 90% by weight of at least one monoethylenically unsaturated compound containing amide groups which differs from a), and 0.01 to 5% by weight of a crosslinking agent for modifying the rheology of aqueous compositions.

Abstract: The invention relates to a process for the preparation of polymers composed predominantly of vinylformamide and having a low residual vinylformamide monomer content by subjecting (a) 49.9-99.9% by weight of N-vinylformamide, (b) 0-50% by weight of one or more monomers capable of free radical polymerization, (c) 0.1-5% by weight of at least one monomer from the group consisting of N-vinylpyrrolidone, N-vinyl-N-methylacetamide, N-vinylcaprolactam and N-vinylpiperidone to free radical polymerization, the monomer (c) being added to the polymerization only when the proportion of still unpolymerized monomer (a) is <5% by weight.

Abstract: Ampholytic copolymers which contain a molar excess of anionogenic and/or anionic groups, polyelectrolyte complexes which contain such an ampholytic copolymer, cosmetic and pharmaceutical compositions which contain at least one such copolymer or polyelectrolyte complex and the use of these copolymers and polyelectrolyte complexes are described.

Abstract: Copolymers which contain tert-butyl (meth)acrylate, at least one ?,?-ethylenically unsaturated amido-containing compound and acrylic acid incorporated in the form of polymerized units, cosmetic and pharmaceutical compositions which contain at least one such copolymer and the use of these copolymers are described.

Abstract: Use of polymers of 30-65% by weight of N-vinylcaprolactam, 35-65% by weight of a monomer mixture of N-vinylimidazole and vinylpyrrolidone, where the weight ratio of N-vinylimidazole to vinylpyrrolidone is between 0.085 and 0.30, 0-15% by weight of a nitrogen-containing quaternizable monomer (A), which is different from N-vinylimidazole, where the sum of monomer (A) and N-vinylimidazole is less than 18% by weight, in cosmetic preparations.

Abstract: The present invention relates to a mono- and/or polyallyl-polyether-urethane, to water-soluble or water-dispersible polymers which comprise such a polyether-urethane in copolymerized form, and to cosmetic or pharmaceutical compositions which comprise a water-soluble or water-dispersible polymer based on a mono- and/or polyallyl-polyether-urethane.

Abstract: The invention relates to graft polymers obtainable by free-radical graft polymerization of a) at least one N-vinyl-containing monomer b) optionally one or more further copolymerizable monomers onto a polymeric graft base c), which comprises at least one compound from the group c1) and at least one compound from the group c2), where c1) represents polyether-containing compounds c2) represents polymers which comprise at least 5% by weight of vinylpyrrolidone units d) optionally at least one crosslinker. and to their use in cosmetic preparations.

Abstract: The present invention relates to cosmetic and pharmaceutical compositions which comprise at least one polyelectrolyte complex which comprises a copolymer with cationogenic groups based on vinylimidazole and an acid-group-containing polymer. The invention further relates to the use of these polyelectrolyte complexes.

Abstract: The present invention relates to an ampholytic copolymer, to polyelectrolyte complexes which comprise such an ampholytic copolymer, and to cosmetic or pharmaceutical compositions which comprise at least one ampholytic copolymer or one polyelectrolyte complex.

Abstract: The present invention relates to polymeric products obtainable by mixing (A) polymers which are obtainable by free-radical polymerization of (A-1) ethylenically unsaturated monomers in the presence of (A-2) unsaturated polyalkylene glycols with (B) silicones at a temperature greater than or equal to 30° C. In addition, the invention relates to a process for the preparation of these polymeric products, and to their use in cosmetic preparations, in particular in hair cosmetic preparations.

Abstract: The invention relates to the use of a cationic crosslinked polymer which is preparable by free-radical polymerization in the presence of salts and of protective colloids in cosmetics.

Abstract: Aqueous dispersion obtainable by free-radical polymerization of a) at least one N-vinyl-containing monomer b) at least one polymeric dispersant c) at least one polymeric precipitation agent d) at least one crosslinker e) optionally further monomers f) optionally at least one regulator g) optionally a buffer substance where the weight ratio of b) to c) is in the range from 1:50 to 1:0.02.

Abstract: A process for the production of water-soluble or water-swellable cationic polymers by (i) free-radically initiated copolymerization of monomer mixtures in water comprising (a) from 1 to 99% by weight of a cationic monomer or quaternizable monomer, (b) from 1 to 99% by weight of a water-soluble monomer, (c) from 0 to 10% by weight of a bi- or polyfunctional, free-radically copolymerizable monomer, adjusting the amounts (a) to (c) in such a way that the resulting polymer has an overall positive charge, in the presence of 1 to 100% of the amount of a salt which is necessary to saturate the reaction medium with said salt and in the presence of 0.1 to 20% by weight referred to the weight of the dispersion, of an amphoteric dispersant having an overall negative charge, and (ii) subsequent quaternization of the polymer if the monomer (a) employed is a non-quaternized monomer is disclosed.

Abstract: The invention relates to acrylate polymers comprising a K-value ranging from 10 to 60, which can be obtained by the radical polymerization of: 30 to 99 wt. % of tert-butyl acrylate and/or tert-butyl methacrylate designated as monomer A; 1 to 28 wt. % of acrylic acid and/or methacrylic acid designated as monomer B, and; 0 to 60 wt. % of a radically copolymerizable monomer or of a radically copolymerizable monomer mixture designated as monomer C, whereby at least one of monomers C yields a homopolymer with a glass-transition temperature lower than 30° C., with the provision that the wt. %'s total 100. The radical polymerization is carried out in the presence of alkane thiols with a C chain length of C 14 to C 22. The invention also relates to acrylate polymers comprising a K-value ranging from 10 to 60, which can be obtained by the radical polymerization of: 30 to 99 wt. % of tert-butyl acrylate and/or tert-butyl methacrylate designated as monomer A; 1 to 28 wt.

Abstract: The present invention relates to cosmetic preparations, in particular for hair cosmetic applications, which comprise copolymers based on N-vinyllactams and N-vinyl heterocyclic compounds.