Abstract: Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an ?-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.

Abstract: Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an ?-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.

Abstract: Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an ?-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.

Abstract: A description is given of an adhesive composition comprising, in a solvent, at least one first organic polymer and at least one different, particulate, second organic polymer. The first polymer is an adhesive polymer having a glass transition temperature of less than or equal to 0° C. which forms a film on a substrate. The second polymer is present in the composition in the form of dispersed solid nanoparticles, has an average particle size of less than or equal to 50 nm and a glass transition temperature of at least 50° C., and does not form a film on a substrate. The composition can be used to produce redetachable self-adhesive articles, more particularly paper labels, film labels or adhesive sheets.

Abstract: A pressure-sensitive adhesive comprising an aqueous polymer dispersion prepared by emulsion polymerization, wherein the polymer comprises n-butyl(meth)acrylate and hydroxybutyl(meth)acrylate.

Abstract: A pressure-sensitive adhesive comprising an aqueous polymer dispersion prepared by emulsion polymerization, wherein the polymer comprises 2-ethylhexyl (meth)acrylate and hydroxybutyl (meth)acrylate.

Abstract: The present invention relates to microcapsule dispersions comprising microcapsules in a hydrophobic solvent, wherein the microcapsules have a capsule core, comprising at least one water-soluble organic substance in solution in a hydrophilic solvent, and a capsule shell, obtainable by a) interfacial polyaddition of at least one di-, oligo- and/or polyisocyanate with at least one reagent carrying at least one isocyanate-reactive group and b) subsequent aftertreatment of the primary product microcapsules with at least one compound selected from the group consisting of amines, alcohols and amino alcohols having a molecular weight of at least 150 g/mol and c) if appropriate, subsequent aftertreatment with at least one further aftertreatment reagent.

Abstract: The present invention relates to microcapsule dispersions comprising microcapsules in a hydrophobic solvent, wherein the microcapsules have a capsule core, comprising a water-soluble organic substance, and a capsule shell which is composed essentially of reaction products of polyisocyanates with polyfunctional amines, and also to a process for preparing them and additionally to microcapsules obtainable from the corresponding microcapsule dispersions.

Abstract: Use of an aqueous pressure-sensitive adhesive for producing self-adhesive articles, wherein the aqueous pressure-sensitive adhesive comprises a water-dispersed polymer binder (polymer for short) and a water-dissolved polymer containing hydrophilic groups selected from primary amino groups and hydroxyl groups (solution polymer for short).