Process for the production of high molecular weight polyamide-im

Details Process for the production of high molecular weight polyamide-im Process for the production of high molecular weight polyamide-im

1989-02-15

1991-09-10

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528337, 528350, C08G 6908, C08G 6926, C08G 6942

Patent

active

050474995

ABSTRACT:
High molecular weight polyamide-imides having a reduced viscosity of 0.3 dl/g or above and exhibiting excellent heat resistance and melt flowability are produced with good economic efficiency by a process, which process comprises the two reaction stages:

REFERENCES:
patent: 2959570 (1960-11-01), Kessler et al.
patent: 3860559 (1975-01-01), Minami et al.
patent: 3917549 (1975-11-01), Morival et al.
patent: 4118374 (1978-10-01), Yamazaki et al.
patent: 4420608 (1983-12-01), Morello
patent: 4645823 (1987-02-01), Ai et al.

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