Patent ID: 8466214
Filing Date: 2013-06-18
Classification: C08F,C08L,Y10T

Abstract:
1. A process for making a core of a core-shell copolymer comprising the steps of: a) emulsion polymerizing in the presence of a radical polymerization initiator a polymerization mixture comprising i) one or more monomers comprising at least one ethylenic elastomeric monomer, ii) at least one crosslinking agent and iii) at least one sulfur-comprising additive of formula (I): wherein: where the crosslinking agent is selected from divinylbenzene, trivinylbenzene, vinyl acrylate, allyl methacrylate, vinyl methacrylate, butadienediol diacrylate, hexanecliol diacrylate, PEG diacrylate, trimethylolpropane trimethacrylate or mixtures thereof, and b) forming crosslinked elastomeric core particles.