Patent ID: 8568750
Filing Date: 2013-10-29
Classification: C08F,C09D,Y10T

Abstract:
1. A method for producing a deformed-shaped particle comprising: absorbing a polymerizable vinyl type monomer contained in the aqueous phase of an aqueous emulsion into a seed particle and polymerizing the absorbed polymerizable vinyl type monomer, wherein the aqueous phase includes only water or a mixture of water and a water-soluble solvent, and, wherein the seed particle is a resin particle which is derived from a (meth)acrylic ester having an ester part containing at least an alkyl group of 3-5 carbon atoms, and which have a weight average molecular weight of 150000 to 1000000 as measured by gel permeation chromatography and the polymerizable vinyl type monomer contains 5 to 50 wt. % of a crosslinkable monomer based on the entire amount of the polymerizable vinyl type monomer.