Polyetherimides of di(phthalic anhydride) derivatives of di(subs

Details Polyetherimides of di(phthalic anhydride) derivatives of di(subs Polyetherimides of di(phthalic anhydride) derivatives of di(subs

1983-02-01

1985-06-11

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

549241, 528125, 528128, C08G 7310

Patent

active

045230064

ABSTRACT:
Novel di(phthalic anhydride) derivatives of di(dialkylphenol) sulfones of the following formula are disclosed: ##STR1## These dianhydrides can be reacted with organic diamines to form novel polyetherimide polymers having particularly beneficial properties.

REFERENCES:
patent: 3989670 (1976-11-01), Takekoshi et al.
patent: 4221897 (1980-09-01), Takekoshi
patent: 4429102 (1984-01-01), Evans et al.

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