Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1986-02-27
1987-12-15
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528188, 528226, 564416, 564430, 564434, C08G 6926
Patent
active
047134399
ABSTRACT:
A novel series of polymers and copolymers based on a polyimide backbone with the incorporation of carbonate moieties along the backbone. The process for preparing these polymers and copolymers is also disclosed as is a novel series of dinitrodiphenyl carbonates and diaminodiphenyl carbonates. The novel polymers and copolymers exhibit high temperature capability and because of the carbonate unit, many exhibit a high degree of order and/or crystallinity.
REFERENCES:
patent: 3705870 (1972-12-01), Darmory et al.
patent: 4063984 (1977-12-01), Critchley
Maudgal Shubha
Pratt J. Richard
St. Clair Terry L.
Foelak Morton
Helfrich George F.
Manning John R.
Moore M. L.
The United States of America as represented by the Administrator
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