Bis (difluoromaleimide) capped propolymers and polymers

Details Bis (difluoromaleimide) capped propolymers and polymers Bis (difluoromaleimide) capped propolymers and polymers

1978-06-21

1979-11-06

Griffin, Ronald W.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

26032626, 260326N, 260326S, 260326C, 528172, 528173, 528342, 528352, 528353, C08G 7310

Patent

active

041737008

ABSTRACT:
End-capping an aromatic diamine or a precursor formed by reaction of an aromatic diamine with an aromatic dianhydride with difluoromaleic anhydride yields prepolymers which thermally cure at temperatures from about 150.degree. to about 200.degree. C. to form polymers which display long-term thermal stability at temperatures up to 300.degree. C. and more.

REFERENCES:
patent: 2980694 (1961-04-01), Sauers et al.
patent: 3234181 (1966-02-01), Olivier
patent: 3761453 (1973-09-01), Jones
patent: 3792022 (1974-02-01), Jones
patent: 3998904 (1976-12-01), Balme et al.
patent: 4046777 (1977-09-01), Muller
patent: 4060515 (1977-11-01), D'Alelio

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