Process for the removal of vinyl chloride from aqueous dispersio

Details Process for the removal of vinyl chloride from aqueous dispersio Process for the removal of vinyl chloride from aqueous dispersio

1978-09-05

1980-10-14

Henderson, C. A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

159 16S, 260 296PT, 528500, 528501, 5263442, C08F 624, C08F 616

Patent

active

042282730

ABSTRACT:
Vinyl chloride is removed from an aqueous dispersion that contains 5%-50% by weight of a vinyl chloride resin and 1000-15,000 ppm of vinyl chloride by a process in which the aqueous dispersion is contacted first with steam and vinyl acetate to remove at least 90% of the vinyl chloride from it and then, after a short conditioning period, with steam to reduce its monomer content to less than 10 ppm.

REFERENCES:
patent: 3926927 (1975-12-01), Stookey
patent: 4015064 (1977-03-01), Feldman
patent: 4031056 (1977-06-01), Patel
patent: 4062662 (1977-12-01), Kuxdorf
Hoechst A. G. (Derwent Abst.) DT2521780, (Nov. 18, 1976).
Shinetsu Chem. Ind. KK (Derwent Abst.) BE853176, (Aug. 1, 1977).

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