Polymerization process with reduced cycle time

Details Polymerization process with reduced cycle time Polymerization process with reduced cycle time

C - Chemistry, Metallurgy

08

F

402/312, 402/396

C08F 4/04 (2006.01) C08F 4/32 (2006.01) C08F 4/38 (2006.01)

Patent

CA 1092288

ABSTRACT A process for the free radical polymerization of vinyl monomers, including vinyl aromatic monomers, wherein the temperature of the polymerization is progressively increased by at least 30°C during the period of the polymerization a temperature range of from 50°C to 160°C and wherein the final temperature is at least 110°C. the polymerization mass including an initiator sensitive to produce free radicals near or at the low temperature end of the range and an initiator sensitive to produce free radicals near to at the high temperature end of the range. A single entity initiator may contain peroxide functions that are actuated to produce free radicals at each of the temperatures extremes of the process.

286839

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