Verfahren zur Suspensionspolymerisation von Vinylchlorid

摘要

1278882 Polymerizing vinyl chloride WACKER-CHEMIE G.m.b.H. 6 Aug 1970 [8 Aug 1969] 37982/70 Heading C3P Vinyl chloride is polymerized in aqueous suspension at 30-95‹ C. and up to 15 atmospheres in the presence as initiator of a combi nation of acetyl cyclohexylsulphonyl peroxide and R1R2R3C-O-O-COR where R is C 3 -C 18 branched alkyl, R1 is hydrogen or C 1 -C 4 alkyl, R2 is C 1 -C 4 alkyl and R3 is C 1 -C 18 alkyl. Exemplified catalyst constituents are tert. butyl perpiralate, and 1,1,3,3-tetramethylbutyl per-2- ethylbutyrate or per-2-methylpentanoate. In one example vinyl acetate is included as comonomer.