Polyamide-polyimide block copolymers soluble in aprotic dipolar

Details Polyamide-polyimide block copolymers soluble in aprotic dipolar Polyamide-polyimide block copolymers soluble in aprotic dipolar

1990-01-25

1992-05-26

Carrillo, Ana L.

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

Synthetic resins

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

428422, 4284235, 428426, 428443, 428458, 4284735, 525436, C08L 7908, B32B 2708

Patent

active

051169207

ABSTRACT:
Novel soluble polyamide-polyimide block copolymers having an average molecular weight M.sub.n of 1,000-50,000 and containing radicals of the formula ##STR1## in the polyimide blocks are described. The compounds can be crosslinked by heating to give insoluble products.

REFERENCES:
patent: 3894114 (1975-07-01), Lohmann et al.
patent: 4271079 (1981-06-01), Maeda et al.
patent: 4503285 (1985-03-01), Darms et al.
C.A. 107:134873 (1987).
C.A. 109:74163.

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