Suspension polymerisation process

Details Suspension polymerisation process Suspension polymerisation process

C - Chemistry, Metallurgy

08

F

400/4114, 400/53

C08F 2/20 (2006.01) C08F 12/06 (2006.01)

Patent

CA 1039447

ABSTRACT OF THE DISCLOSURE A process for the production of beads of a vinyl- aromatic polymer which comprises polymerising a vinylaromatic monomer in an aqueous suspension system in the presence of a suspending agent, a suspension polymerisation catalyst and an alkyl hydrogen poly-siloxane comprising the repeating unit Image where R is an alkyl group having from 1 to 4 carbon atoms. The process reduces the incidence of occluded water especi- ally in portions of the bead adjacent the surface and is particularly useful in the production of foamable polymer beads.

192450

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