Process for producing polyamide-imide resin

Details Process for producing polyamide-imide resin Process for producing polyamide-imide resin

1982-11-04

1985-02-05

Lee, Lester L.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

524600, 525432, 525436, 528 48, 528 52, 528 73, 528 74, 528179, C08G 7314

Patent

active

044979444

ABSTRACT:
A polyamide-imide resin which can give a varnish having a high resin content, excellent in storage stability and heat resistant final products such as insulated wire can be produced by reacting an aromatic diisocyanate with a tricarboxylic acid anhydride in the presence of a basic solvent while adjusting the resin content at 40% by weight or more, and adding a compound having one active hydrogen atom before, during or after the above-mentioned reaction so as to adjust the reduced viscosity of the resin to 0.27 or lower.

REFERENCES:
patent: 4354965 (1982-10-01), Lee et al.

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