Benzocyclobutene-terminated polymides

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate

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528172, 528173, 528174, 528185, 528188, 528200, 528229, 528321, 528322, 528350, 528353, C08G 7310

Patent

active

054649250

ABSTRACT:
The present invention is an oligomer represented by the formula: ##STR1## wherein X is a moiety selected from the group consisting of: ##STR2## where each Y is independently S, O, CH.sub.2, C.dbd.O, CH.sub.3 --C--CH.sub.3, O.dbd.S.dbd.O, or CF.sub.3 --C--CF.sub.3.
In another aspect, the present invention is a polymer of the above-described oligomer.

REFERENCES:
patent: 4540763 (1985-09-01), Kirchhoff
patent: 4696994 (1987-09-01), Nakajima et al.
patent: 4711964 (1987-12-01), Tan et al.

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