Process for removing VCM from polyvinyl chloride

Details Process for removing VCM from polyvinyl chloride Process for removing VCM from polyvinyl chloride

1978-04-17

1981-01-27

Henderson, Jr., C. A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

5263442, 528502, 528503, C08F 624

Patent

active

042476860

ABSTRACT:
A process is provided for reducing the concentration of vinyl chloride monomer in a polymerized slurry obtained by the suspension-polymerization of vinyl chloride alone or a mixture of vinyl chloride with a monomer copolymerizable therewith, the improvement characterized in that a polymerized slurry at a temperature between 40.degree. C. and 100.degree. C. is jetted and/or flowed down into the gas phase portion of a vessel maintained at a pressure below atmospheric pressure.

REFERENCES:
patent: 2349412 (1944-05-01), Douglas
patent: 2514207 (1950-07-01), Johnson
patent: 3317449 (1967-05-01), Isaacs
patent: 3475398 (1969-10-01), Jobard
patent: 3547865 (1970-12-01), Hoch
patent: 3563975 (1971-02-01), Zavasnik

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