Thermosetting imide resins from amino acid hydrazide

Details Thermosetting imide resins from amino acid hydrazide Thermosetting imide resins from amino acid hydrazide

1978-11-29

1980-07-08

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

260 302, 260 326NA, 260 37N, 428474, 528170, 528210, 528211, 528321, 528310, 528331, C08G 7312

Patent

active

042118611

ABSTRACT:
Novel thermosetting imide resins are obtained by reacting an N,N'-bisimide of an unsaturated dicarboxylic acid with the hydrazide of an amino acid, preferably in the molar proportion between about 1.1 and about 10.0. The resulting prepolymerization products can also be prepared in organic solvents or diluents. By heating at atmospheric pressure or under pressure to a temperature between about 100.degree. C. and about 350.degree. C. and preferably between about 160.degree. C. and 260.degree. C., if desired, in the presence of curing catalysts or inhibitors, the prepolymerization products are cured and hardened to substantially insoluble, infusible, highly cross-linked imide resins of superior stability at high temperatures. Solutions of the prepolymerization products have the advantage that they are stable at room temperature for an almost unlimited period of time without any substantial increase in their viscosity.

REFERENCES:
patent: 3669930 (1972-06-01), Asahara et al.

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