Thermosetting imide resins from dihydrazide of dicarboxylic acid

Details Thermosetting imide resins from dihydrazide of dicarboxylic acid Thermosetting imide resins from dihydrazide of dicarboxylic acid

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, 528322, C08G 7312

Patent

active

042118603

ABSTRACT:
Novel imide resins are prepared by reacting a bisimide of an unsaturated dicarboxylic acid with a dihydrazide of a dicarboxylic acid, preferably in an organic solvent or diluent at elevated temperature for a period of time insufficient to yield an insoluble, infusible, fully cured imide resin. Solutions of the resulting prepolymerization product are stable at room temperature and their viscosity remains substantially unchanged for a prolonged period of time. Fully cured imide resins and articles thereof of a high heat resistance are obtained by heating said prepolymerized imide resin or materials such as fibers, metal wire webs, and others impregnated therewith, if desired, in the presence of curing catalysts, inhibitors, fillers, and other materials, to curing temperature up to 350.degree. C.

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

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