Abstract: The use of polystyrene-containing polymers as filter aids and/or stabilizers for the filtration or stabilization of aqueous liquids, and also novel particulate polymers which are insoluble in water and scarcely swellable are claimed.

Abstract: The invention relates to the use of polymers comprising thermoplastic polymers as filtration aids and/or stabilishing agent for the filtration or stabilisation of aqueous liquids.

Abstract: Polymers containing at least one unit of formula wherein X1, X2 and X3 are independently from each other O, S or NR1, a process for their preparation, intermediates and electronic devices containing these polymers as semiconducting material.

Abstract: Disclosed are polymers comprising at least one unit of formula (1), a process for their preparation, intermediates and electronic devices comprising these polymers as semiconducting material.

Abstract: The present invention relates to the use of copolymers comprising N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative as agents for improving the water resistance of a cosmetic formulation, and to the use of these copolymers in sunscreen compositions for increasing the sun protection factor, and furthermore the present invention relates to cosmetic formulations comprising these copolymers.

Abstract: The present invention relates to the use of copolymers comprising N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative as agents for improving the water resistance of a cosmetic formulation, and to the use of these copolymers in sunscreen compositions for increasing the sun protection factor, and furthermore the present invention relates to cosmetic formulations comprising these copolymers.

Abstract: The present invention relates to an aqueous polymer dispersion which is obtainable by free-radical polymerization of a monomer mixture which comprises at least one amide-group-containing compound, at least one crosslinker and at least one monomer with at least one cationogenic and/or cationic group. The invention further relates to the polymers obtainable by drying such a polymer dispersion, and to cosmetic or pharmaceutical compositions which comprise such a polymer dispersion or such a polymer.

Abstract: The present invention relates to an ampholytic copolymer, to a process for its preparation, to cosmetic or pharmaceutical compositions which comprise at least one such ampholytic copolymer, and to further uses of these copolymers.

Abstract: Process for removal of residual styrene monomers from polystyrene and from blends comprising water-insoluble, crosslinked polyvinylpyrrolidone, via treatment with water, which comprises carrying out the treatment on a particulate solid blend.

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: Process for production of polymer blends which are suitable as filter aids and are composed of polystyrene and of crosslinked water-insoluble polyvinylpyrrolidones via processing of the two components in an extruder, which comprises melting polystyrene in an extruder and then treating it with the polyvinylpyrrolidone, and adding, to the mixture of the components, from 0.1 to 10% by weight of water, based on the total amount of polystyrene and popcorn polymer, and extruding and comminuting the mixture.

Abstract: Solid dispersions of thermoplastic polymers and a crosslinked water-insoluble polymer, which solid dispersions are suitable as filter aids, wherein the solid dispersions comprise 20 to 95% by weight of at least one thermoplastic polymer (component A) and 5 to 80% by weight of at least one crosslinked water-insoluble polymer selected from the group consisting of homopolymers of N-vinylformamide, N-vinylcaprolactam, N-vinylpiperidone, N-vinylpyridines, N-vinylimidazoles, styrene monomers, acrylates and methacrylates and also copolymers of basic N-vinyl compounds, styrene monomers, acrylates and methacrylates (component B).

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: Copolymers obtained by free-radical polymerization of a mixture of a) 80 to 99% by weight of a monoolefinic monomer selected fronm the group consisting of acrylic monomers, methacrylic monomers and N-vinyllactam monomers (monomers a)), b) 1 to 20% by weight of a monoolefinic silane monomer (monomer b)), with the proviso that the total of components a) and b) equals 100% by weight,

Abstract: Use of polyvinyllactam-polyalkylene oxide block copolymers as solubilizers for sub-stances which are sparingly soluble in water.

Abstract: Processes for preparing graft polymers and their use for inhibiting gas hydrates

Abstract: The following invention relates to copolymers containing silicone groups which comprise, in copolymerized form, at least one monomer with an ionogenic and/or ionic group and at least one crosslinking monomer, to a process for the preparation of such copolymers containing silicone groups by precipitation polymerization, and to the use of these copolymers.

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: Process for production of polymer blends which are suitable as filter aids and are composed of polystyrene and of crosslinked water-insoluble polyvinylpyrrolidones via processing of the two components in an extruder, which comprises melting polystyrene in an extruder and then treating it with the polyvinylpyrrolidone, and adding, to the mixture of the components, from 0.1 to 10% by weight of water, based on the total amount of polystyrene and popcorn polymer, and extruding and comminuting the mixture.