Abstract: The present invention relates to a process for producing a microcapsule dispersion comprising microcapsules comprising a hydrophilic capsule core and a capsule wall polymer, wherein a water-in-oil emulsion comprising a hydrophobic diluent as continuous phase, and the hydrophilic capsule core material, a monomer composition and an amphiphilic polymer is produced and then the monomers are free-radically polymerized, where the monomer composition comprises 30 to 100% by weight of one or more monomers selected from C1-C24-alkyl esters of acrylic acid and/or methacrylic acid (monomers I), 0 to 70% by weight of one or more monomers selected from acrylic acid, methacrylic acid, maleic acid, acrylic acid esters and/or methacrylic acid esters which carry hydroxy and/or carboxy groups (monomers II), 0 to 50% by weight of one or more monomers which has two or more ethylenically unsaturated radicals, (monomers III) and 0 to 30% by weight of one or more other monomers (monomers IV) in each case based on the total weight o

Abstract: Microcapsules of the present invention have a core and a wall. The wall is made of a polymer, which by weight is from 40 to 90% C1-C24-alkyl ester of acrylic acid, methacrylic acid, or both (“first monomer”); from 10 to 60% an ethylenically unsaturated crosslinker; and from 0 to 30% an ethylenically monounsaturated monomer different from the first monomer. At least 80% of the crosslinker is has three or more ethylenically unsaturated radicals. The core is made of a paraffin composition, which by weight has from 35 to 98% n-octadecane; from 1 to 10% C20-C24-aliphatic, diisopropylnaphthalene, or both; from 1 to 5% wax with a melting point >40° C.; and from 0 to 50% n-hexadecane. The present invention also relates to a process for preparing the microcapsules and to their use in binding construction materials, textiles, and heat transfer liquids.

Abstract: The present invention relates to microcapsule dispersions comprising microcapsules comprising a hydrophilic capsule core and a capsule wall polymer which is obtainable by polymerization of a monomer composition comprising 25 to 95% by weight of one or more C1-C24-alkyl and/or glycidyl esters of acrylic acid and/or methacrylic acid 5 to 75% by weight of one or more hydrophilic monomers selected from acrylic acid esters and/or methacrylic acid esters which carry hydroxy and/or carboxy groups, and allylgluconamide 0 to 40% by weight of one or more compounds having two or more ethylenically unsaturated radicals, where the microcapsules are dispersed in a hydrophobic diluents, to the microcapsules, and to a method for producing them and to their use for the delayed release of active ingredients for construction, cosmetics or crop protection applications.

Abstract: Microcapsules of the present invention have a core and a wall. The wall is made of a polymer, which by weight is from 40 to 90% C1-C24-alkyl ester of acrylic acid, methacrylic acid, or both (“first monomer”); from 10 to 60% an ethylenically unsaturated crosslinker; and from 0 to 30% an ethylenically monounsaturated monomer different from the first monomer. At least 80% of the crosslinker is has three or more ethylenically unsaturated radicals. The core is made of a paraffin composition, which by weight has from 35 to 98% n-octadecane; from 1 to 10% C20-C24-aliphatic, diisopropylnaphthalene, or both; from 1 to 5% wax with a melting point>40° C.; and from 0 to 50% n-hexadecane. The present invention also relates to a process for preparing the microcapsules and to their use in binding construction materials, textiles, and heat transfer liquids.