Polyetherimide copolymers, and method for making

Details Polyetherimide copolymers, and method for making Polyetherimide copolymers, and method for making

1987-03-25

1988-12-27

Welsh, Maurice J.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528128, 528172, 528179, 528180, 528181, 528207, C08G 6306

Patent

active

047941570

ABSTRACT:
The intercondensation of aryldiamine and a mixture of oxydiphthalic anhydride and aromatic bis(ether anhydride), such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]-propane dianhydride, have been found to provide tough flexible transparent copolymer having T.sub.g 's from about 217.degree. C. to 300.degree. C.

REFERENCES:
patent: 3983093 (1976-09-01), Williams, III et al.
patent: 4092297 (1978-05-01), Williams, III
patent: 4098800 (1987-07-01), Banucci et al.
patent: 4197396 (1980-04-01), Banucci et al.
patent: 4417044 (1983-11-01), Pareth

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