Soluable polyimides

Details Soluable polyimides Soluable polyimides

1991-09-26

1993-07-20

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528170, 528172, 528173, 528185, 528188, 528220, 528229, 528352, C08G 6926, C08G 7310

Patent

active

052294854

ABSTRACT:
The invention relates to soluble homo- or copolyimides of formula I ##STR1## wherein Y is hydrogen or the substituents Y, together with the linking N atom, are a divalent radical of of formulae IIa to IIc ##STR2## and X is the radical of of an aromatic amine after removal of the amino end groups, and n is an integer from 5 to 150.
The compounds of the invention are readily soluble in organic solvents and are suitable tougheners for epoxy, bismaleimide and triazine resin systems.

REFERENCES:
patent: 4418181 (1983-11-01), Monacelli
patent: 4629777 (1986-12-01), Pfeifer
Polymer 30, 213 (1989).
33rd International SAMPE Symposium 1988, 1546.

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