Process for producing polycarbodiimide resin

Details Process for producing polycarbodiimide resin Process for producing polycarbodiimide resin

1993-08-03

1994-12-13

Foelak, Morton

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...

528 51, 528 69, 528 44, 564252, C08G 1802, C07C26700

Patent

active

053730801

ABSTRACT:
The present invention provides a process for producing a polycarbodiimide resin from an aliphatic diisocyanate and a terminal-blocking agent in the presence of a carbodiimidization catalyst, wherein the aliphatic diisocyanate is tetramethylxylylene diisocyanate represented by the following formula ##STR1## and polymerization is conducted using no solvent. The polycarbodiimide resin obtained by the above process has good storage stability and excellent miscibility with organic solvents.

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