Process for the partial polymerisation of vinyl monomers

Details Process for the partial polymerisation of vinyl monomers Process for the partial polymerisation of vinyl monomers

C - Chemistry, Metallurgy

08

K

402/394

C08K 5/36 (2006.01) C08F 2/02 (2006.01) C08F 12/08 (2006.01) C08F 20/12 (2006.01) C08F 20/14 (2006.01) C08K 5/14 (2006.01)

Patent

CA 1183996

Abstract Vinyl monomers, for example methyl methacrylate are partially polymerised by means of a percarbonic acid ester, preferably in the absence of regulators, and polymerisation is terminated by the addition of a thioether, organic disulphide or mercaptan acting as polymerisation inhibitor. The polymerisation is preferably terminated when at least 20% by weight of the vinyl monomer(s) has been polymerised. The polymerisation is preferably effected at least in part at a temperature of 80 to 100°C, and the earlier temperature may be maintained within this range by the addition of cold water.

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