Quasi-prepolymers from isatoic anhydride derivatives of polyoxya

Details Quasi-prepolymers from isatoic anhydride derivatives of polyoxya Quasi-prepolymers from isatoic anhydride derivatives of polyoxya

1985-06-21

1986-09-02

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

528 59, 528 64, 528 76, 528 77, 528 78, 528 79, C08G 1814

Patent

active

046096833

ABSTRACT:
Quasi-prepolymers are made from aromatic isocyanates and aromatic-amine amides which comprise the reaction product of a polyoxyalkylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and an isatoic anhydride of the formula: ##STR1## where B is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino and cyano and n is a number from 1 to 4. Such materials are useful for the production of reaction injection molded elastomers having improved properties.

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