PRECROSS-LINKED SILICONE ELASTOMER PARTICLES WITH ORGANOPOLYMER SHELL AS FORMULATION CONSTITUENT IN POWDER COATING MATERIALS

摘要

The invention relates to the use of precross-linked silicone elastomer particles with an organopolymer shell as the formulation constituent in powder coating material compositions based on thermoplastic or thermosetting binding agents said silicone elastomer particles contain (a) 5 to 95 % by weight, in relation the total weight of the copolymerisate, of a nucleus polymer of the general formula (R2SiO2/2)x.(RSiO3/2)y.(SiO4/2)z with x = 5 to 99.5 mol %, y = 0.5 to 95 mol %, z = 0 to 30 mol %, and (b) 5 to 95 % by weight, in relation to the total weight of the copolymer, a shell made of organopolymer of ethylenically mono or multi-unsaturated monomers, R standing for identical or different monovalent C1-C6 alkyl or alkenyl residues, aryl residues or substituted hydrocarbon residues.