Abstract: A method for removing residual styrene monomers from co-extrudates comprising polystyrene and water-insoluble, crosslinked polyvinylpyrrolidone, which comprises subjecting an aqueous suspension of the particulate solid co-extrudate to a heat treatment at temperatures of 60 to 99° C., the weight ratio of solid co-extrudate to water in the suspension being 1:1.5 to 1:20, and the concentration of the suspension being kept constant during the treatment.

Abstract: Methods for regenerating filter aids which comprise inorganic, natural or semisynthetic filter aids. The method comprises subjecting the filter aid to a first treatment with an aqueous alkaline solution, treating the filter aid with enzymes, treating the filter aid with a surfactant, and subjecting the filter aid a second treatment with the aqueous alkaline solution. The enzyme treatment and the surfactant treatment steps may be carried out simultaneously or in any order.

Abstract: Processes comprising: (i) providing a filter aid comprising a co-extrudate of a water-insoluble polyvinylpyrrolidone and a thermoplastic polymer, (ii) treating the filter aid with aqueous alkali; (iii) subsequently treating the filter aid with an enzyme; and (iv) subsequently thereto carrying out a second treatment with aqueous alkali, to provide a regenerated filter aid, and uses therefor.

Abstract: Methods for regenerating filter aids which comprise inorganic, natural or semisynthetic filter aids. The method comprises subjecting the filter aid to a first treatment with an aqueous alkaline solution, treating the filter aid with enzymes, treating the filter aid with a surfactant, and subjecting the filter aid a second treatment with the aqueous alkaline solution. The enzyme treatment and the surfactant treatment steps may be carried out simultaneously or in any order.

Abstract: Processes comprising: (i) providing a filter aid comprising a co-extrudate of a water-insoluble polyvinylpyrrolidone and a thermoplastic polymer; (ii) treating the filter aid with aqueous alkali; (iii) subsequently treating the filter aid with an enzyme; and (iv) subsequently thereto carrying out a second treatment with aqueous alkali, to provide a regenerated filter aid, and uses therefor.

Abstract: A method for removing residual styrene monomers from co-extrudates comprising polystyrene and water-insoluble, crosslinked polyvinylpyrrolidone, which comprises subjecting an aqueous suspension of the particulate solid co-extrudate to a heat treatment at temperatures of 60 to 99° C., the weight ratio of solid co-extrudate to water in the suspension being 1:1.5 to 1:20, and the concentration of the suspension being kept constant during the treatment.

Abstract: A cleaner composition which comprises at least one surfactant, at least one builder and at least one nitrogen-containing polymer is described. The nitrogen-containing polymer is, for example, an alkoxylated polyvinylamine, an alkoxylated, acylated or alkylated polyaminoamide or a polyurethane-urea with tertiary amino groups. The nitrogen-containing polymers facilitate soil release.

Abstract: A polyurethane which contains, as incorporated units, a) at least one diisocyanate, b) at least one polyether having two active hydrogen atoms per molecule and c) at least one compound of the formula I R1—Z1??(I) where R1 is C8- to C30-alkyl, C8- to C30-alkenyl, aryl-C6–C22-alkyl or aryl-C6–C22-alkenyl, the alkyl group having 1, 2, 3 or 4 nonneighboring double bonds, and Z1 is OH, SH or NHR2, R2 being hydrogen, C1- to C6-alkyl or C5- to C8-cycloalkyl, and its use are described.

Abstract: The present invention relates to substrates whose surface comprises a hyperbranched polymer which has urethane groups and/or urea groups, its amount being appropriate for modifying the properties on the surface. The invention further relates to a process for modifying the surface properties of substrates.

Abstract: Compositions comprising at least one water-insoluble ingredient and at least one copolymer of A) from 5 to 99% by weight of at least one N-vinylcarboxamide of the formula I where R1 and R2 independently of one another are hydrogen or C1-C6-alkyl; B) from 1 to 95% by weight of at least one monomer having a hydrophobic radical which can be copolymerized with vinylcarboxamides of the formula I; and optionally C) from 0 to 94% by weight of at least one other copolymerizable monomer, and the use of the above copolymers as solubility promoters.

Abstract: Incorporation of crosslinked polyvinylpyrrolidone in a specific particle composition as a disintegrant in compact particulate laundry detergents or cleaning products, such a particle composition and the compact particulate laundry detergents themselves, a process for preparing such a compact particulate laundry detergents or cleaning products, and a process for preparing specific particle compositions.

Abstract: A cleaner composition which comprises at least one surfactant, at least one builder and at least one nitrogen-containing polymer is described. The nitrogen-containing polymer is, for example, an alkoxylated polyvinylamine, an alkoxylated, acylated or alkylated polyaminoamide or a polyurethane-urea with tertiary amino groups. The nitrogen-containing polymers facilitate soil release.

Abstract: Water-soluble or water-dispersible, film-forming graft copolymers obtainable by free-radical polymerization of

Abstract: The present invention relates to particulate, linear, sheet-like, or three-dimensional structures which comprise, at least on their surface, a hydrophilicizing amount of at least one polymer which has urethane groups and/or urea groups, and also anionic groups.

Abstract: The present invention relates to cosmetic or pharmaceutical compositions having a liquid to gel-like consistency which comprise at least one copolymer which comprises at least one N-vinyllactam and at least one ethylenically unsaturated monomer having a longer-chain alkyl or alkylene radical in copolymerized form. The invention also relates to the use of such copolymers in cosmetic or pharmaceutical compositions.

Abstract: The use is described of particulate, water-insoluble and scarcely swellable polymers of ethylenically unsaturated monomers, which polymers contain, copolymerized, at least 20% by weight, based on the total weight of the monomers, of at least one &agr;,&bgr;-monoethylenically unsaturated monocarboxylic acid having from 3 to 6 carbons as filter aid for filtering aqueous liquids. Subject-matter of the invention are also water-insoluble, scarcely swellable polymers (popcorn polymers) that contain, copolymerized, &agr;,&bgr;-monoethylenically unsaturated carboxylic acids and styrene or styrene derivatives, and also a process for their preparation.

Abstract: Polyaminoamides in which at least some of the amine nitrogen atoms have been alkoxylated, amidated, or alkylated are suitable for hydrophilicizing surfaces, in particular of linear or sheet-like textile structures made from synthetic fibers, or structures in the form of their plastics film or of a plastics molding. The hydrophilicized linear or sheet-like textile structures are particularly used in hygiene items.

Abstract: The particle size of popcorn polymers is established during the popcorn polymerization by a process in which reaction mixtures forming popcorn polymers and comprising monoethylenically unsaturated monomers and a crosslinking agent are polymerized in the absence of oxygen and polymerization initiators at up to 200° C. and in which the popcorn polymerization is carried out as a precipitation polymerization in water or in the absence of a solvent and the particle size of the popcorn polymers is controlled in the range from 1 &mgr;m to 10 mm by passing an inert gas stream into the reaction mixture, and popcorn polymers having a mean particle diameter of from >400 &mgr;m to 1500 &mgr;m are used as beverage clarifiers, antidiarrheal drugs and disintegration accelerators for tablets.

Abstract: The use of polystyrene-containing popcorn polymers as filter aid and/or stabilizer for filtering or stabilizing aqueous liquids, a process for filtration or stabilization, and novel only slightly swellable popcorn polymers are described.

Abstract: 0050/51242 Establishing the particle size of popcorn polymers during popcorn polymerization and use of popcorn polymers Abstract The particle size of popcorn polymers is established during the popcorn polymerization by a process in which reaction mixtures forming popcorn polymers and comprising monoethylenically unsaturated monomers and a crosslinking agent are polymerized in the absence of oxygen and polymerization initiators at up to 200° C. and in which the popcorn polymerization is carried out as a precipitation polymerization in water or in the absence of a solvent and the particle size of the popcorn polymers is controlled in the range from 1 &mgr;m to 10 mm by passing an inert gas stream into the reaction mixture, and popcorn polymers having a mean particle diameter of from >400 &mgr;m to 1500 &mgr;m are used as beverage clarifiers, antidiarrheal drugs and disintegration accelerators for tablets.