Method for producing aromatic polyamide oligomers containing pol

Details Method for producing aromatic polyamide oligomers containing pol Method for producing aromatic polyamide oligomers containing pol

1992-01-07

1993-09-21

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 73, 528 75, 525419, 548420, 560225, 564 50, 564315, 564305, C08G 1804

Patent

active

052470474

ABSTRACT:
Aromatic polyamide oligomers containing polymerizable unsaturated groups are prepared by heating and reacting together an aromatic diisocyanate, an aromatic dicarboxylic acid and an unsaturated compound capable of reacting with the aromatic diisocyanate. The aromatic polyamide oligomers thus obtained have excellent molding processability and are useful as raw materials for thermosetting polyamides with enhanced mechanical strength and chemical stability at higher temperatures. The compositions comprising the aromatic polyamide oligomers and maleimide derivatives, further produce cured molded bodies with excellent heat resistance.

REFERENCES:
patent: 4108810 (1978-08-01), Baker
patent: 4110274 (1978-08-01), Corbett et al.
patent: 4187366 (1980-02-01), Friedlander et al.
patent: 4497944 (1985-02-01), Nishiyawa et al.

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