Crosslinked polymer microparticle

Details Crosslinked polymer microparticle Crosslinked polymer microparticle

C - Chemistry, Metallurgy

08

F

400/2054, 400/30

C08F 212/08 (2006.01) C08F 220/12 (2006.01) C08F 257/02 (2006.01) C08F 265/04 (2006.01) C09D 125/04 (2006.01)

Patent

CA 1281492

ABSTRACT Crosslinked polymer microparticles that have a particle size of about 0.1-5 microns of polymerized monomers of styrene, alkyl methacrylate having 1-12 carbons in the alkyl group, alkyl acrylate having 1-12 carbon atoms in the alkyl group and mixtures thereof, about 0.1-5% by weight of a crosslinking monomer of an alkylene glycol dimethacrylate or diacrylate each having 1-8 carbon atoms in the alkyl group and about 0.1-5% by weight of allyl methacrylate or allyl acrylate; said polymer having a weight average molecular weight of about 500,000 to 5,000,000; optionally, polymeric chains can be grafted onto the polmyer microparticles; the microparticles are useful as additives for coating compositions to control rheology and in particular for metallic pigment flake and sag control. 0209d

521007

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