Process for the production of a voluminous, particulate vinyl ch

Details Process for the production of a voluminous, particulate vinyl ch Process for the production of a voluminous, particulate vinyl ch

1982-09-07

1984-09-04

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 87, C08F 4708, C08J 126

Patent

active

044698186

ABSTRACT:
The invention concerns the production of a voluminous, particulate vinyl chloride polymer by precipitation of a solution of the polymer in a heated, agitated nonsolvent with removal of the solvent by distillation, the nonsolvent exhibiting a boiling point of >100.degree. C. under normal pressure, and the temperature of the nonsolvent being 40.degree.-120.degree. C. above the boiling point of the solvent, but does not fall below 100.degree. C. nor range above 180.degree. C. The voluminous, particulate polymer is suitable for the production of damping materials.

REFERENCES:
patent: 3450650 (1969-06-01), Murata
patent: 4166171 (1979-08-01), Mitchell
"Ullmanns Encyklopadie der Technischen Chemie" [Ullmann's Encyclopedia of Technical Chemistry] 3rd edition, vol. 7, p. 296.

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