Process and apparatus for heat treatment of polymer containing l

Details Process and apparatus for heat treatment of polymer containing l Process and apparatus for heat treatment of polymer containing l

1990-02-27

1992-02-11

Kight, III, John

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524466, 524470, 524473, 525461, 525462, 526 62, 528480, 528481, 528485, 528490, 528491, 528497, 528498, C08J 502, C08F28300, C08F 200, C08F 600

Patent

active

050876600

ABSTRACT:
A process for treating a mixture of a polymer and a chlorinated organic solvent under heating, characterized by employing an apparatus in which a portion thereof to be brought into contact with the heated mixture is made of an acid resistant inorganic material selected from a group consisting of a metallic composition containing at least 85% of copper, nickel or a mixture thereof, and a ceramic material. Deterioration in color is improved in a process for recovering a polymer dissolved in the chlorinated organic solvent.

REFERENCES:
patent: 4383092 (1983-05-01), Ko et al.

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