C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/5.5
C08F 6/16 (2006.01) C08F 6/24 (2006.01) C08F 14/06 (2006.01)
Patent
CA 1127793
ABSTRACT OF THE DISCLOSURE The invention relates to a novel process for the production of polyvinyl chloride having a low vinyl chloride monomer content, the latter being removed from a slurry or latex which result from polymerization of vinyl chloride in aqueous media. In the novel process vinyl chloride is removed from a slurry or latex that con- tains from about 1000 parts to 15,000 parts by weight of vinyl chloride per million parts by weight of the slurry or latex and from 5% to 50% by weight of a polymer selected from the group consisting of polyvinyl chloride and copolymers of vinyl chloride with at least one monomer copolymerizable therewith that comprises (a) contacting the slurry or latex with 0.5% to 20% by weight, based on the weight of the slurry or latex, of an organic liquid selected from the group consisting of vinyl acetate, methyl- ene chloride, di-tert-butyl-p-cresol, and mixtures thereof, at a temperature in the range of 25°C to 125°C, and then (b) removing vinyl chloride vapor from the slurry or latex.
380158
Feldman Martin L.
Goodman Donald
Koral Marvin
Miller Robert S.
Stanaback Robert J.
Smart & Biggar
Tenneco Chemicals Inc.
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