Process for imidizing vinyl-aromatic copolymers

Details Process for imidizing vinyl-aromatic copolymers Process for imidizing vinyl-aromatic copolymers

1989-02-08

1990-06-12

Ivy, C. Warren

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253276, 5253593, 525371, 525357, 525337, 525343, C08F 830

Patent

active

049333950

ABSTRACT:
Process for the imidization of vinyl-aromatic copolymers containing maleic anhydride, using as an imidizing agent an amide, the imidization being conducted in an anhydrous state and in the presence of a catalyst.

REFERENCES:
patent: 3778418 (1973-12-01), Nakayama
patent: 4404322 (1983-09-01), Saito et al.

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