Patent ID: 8304075
Filing Date: 2012-11-06
Classification: B01J,C09K,F28D,Y02E,Y10T

Abstract:
1. A coarsely divided microcapsule preparation with particles whose particle sizes are in the range from 200 μm to 5 cm, comprising microcapsules with a capsule core of latent heat storage material and a thermosetting polymer as capsule wall and one or more polymeric binders whose binder polymer has a glass transition temperature of from −60 to +150° C., has thermoplastic properties and film-forming properties under processing conditions and is constructed from one or more ethylenically unsaturated monomers by emulsion polymerization, where the binder content, calculated as solid, is 1-30% by weight, based on the total weight of the coarsely divided microcapsule preparation wherein said binder polymer is at least one polymer selected from the group consisting of a copolymer of styrene with an alkyl(acrylate), a copolymer of styrene with butadiene, a polymer of an alkyl(meth)acrylate, a homopolymer of a vinyl ester of an aliphatic carboxylic acid, a copolymer of a vinyl ester of an aliphatic carboxylic acid with an olefin, a copolymer of a vinyl ester of an aliphatic carboxylic acid with an alkyl (meth)acrylate, a copolymer of a vinyl ester of an aliphatic carboxylic acid with an aliphatic carboxylic acid and an alkyl(meth)acrylate and a copolymer of styrene with acrylonitrile wherein the capsule wall comprises from 10 to 100% by weight one or more C wherein said coarsely divided microcapsule preparation is an aggregation of said microcapsules.