Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1976-07-06
1978-12-12
Torrence, Dolph H.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
260326C, 260326S, 260326N, 528184, 528185, 528188, 528190, 528337, 260823, C07D20942, C07D48704
Patent
active
041295706
ABSTRACT:
The present invention is directed to a novel class of polynitrile (polycyano) substituted polyimide oligomers and the polyamic acid or ester precursors thereof. The nitrile groups on the oligomers allow the compounds to be cured through addition reactions which result in little or no outgassing. In addition, these oligomers are curable with heat in the presence of catalysts such as those which induce cyano trimerizations. The fully cured polyimides derived from these oligomers have excellent thermal and mechanical properties at high temperatures.
REFERENCES:
patent: 3845018 (1974-10-01), Bilow et al.
patent: 3890274 (1975-06-01), D'Alelio
patent: 3897395 (1975-07-01), D'Alelio
patent: 3998786 (1976-12-01), D'Alelio
Bilow Norman
Landis Abraham L.
Miller Leroy J.
Hogan, Jr. Booker T.
Hughes Aircraft Company
MacAllister W. H.
Torrence Dolph H.
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