Novel polyamic acid polymers and polyimide derivatives thereof

Details Novel polyamic acid polymers and polyimide derivatives thereof Novel polyamic acid polymers and polyimide derivatives thereof

1980-01-21

1981-06-02

Schain, Howard E.

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

Synthetic resins

From carboxylic acid or derivative thereof

26034674, 428446, 428458, 528183, 528188, 528352, C08G 7310, C08G 7314

Patent

active

042712882

ABSTRACT:
Novel polymeric materials are formed from dianhydride compounds of the formula ##STR1## wherein Ar, R' and R" are named substituents, and both x's are either zeros or ones.

REFERENCES:
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patent: 3179634 (1965-04-01), Edwards
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patent: 3293278 (1966-12-01), Zienty et al.
patent: 3373171 (1968-03-01), Lucas et al.
patent: 3536666 (1970-10-01), Berg
patent: 3585123 (1971-06-01), Godar et al.
patent: 3634325 (1972-01-01), Di Leone et al.

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