Residual solvent removal from chlorinated polymers

Details Residual solvent removal from chlorinated polymers Residual solvent removal from chlorinated polymers

1976-10-13

1977-09-20

Levin, Stanford M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

260 96HA, 260772, 260816R, 526;43, C08C 302, C08C 1912, C08F 600

Patent

active

040498972

ABSTRACT:
A process for at least partly removing residual chlorinated hydrocarbon solvent from a chlorinated polymer obtained by precipitation from the said solvent, which comprises treatment of the chlorinated polymer with the vapor of an aliphatic halo-hydrocarbon having a boiling point below that of the chlorinated hydrocarbon to be removed, at a temperature 10.degree. above the boiling point of the halo-hydrocarbon employed in the treatment.

REFERENCES:
patent: 2581927 (1952-01-01), Briant
patent: 3677321 (1972-07-01), Felstead

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