Process and compositions for production of moldings

Details Process and compositions for production of moldings Process and compositions for production of moldings

1989-02-13

1990-10-16

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 74, 528 76, 528 83, 521130, 521163, C08G 1808, C08G 1832, C08G 1843, C08G 1860

Patent

active

049636405

ABSTRACT:
The present invention relates to a novel chain extender for use in making moldings. The chain extender broadly comprises the reaction product of an aromatic diamine and a cyclic carboxylic acid dianhydride.

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