Polyureas prepared from a mixture of polyamines and polyisocyana

Details Polyureas prepared from a mixture of polyamines and polyisocyana Polyureas prepared from a mixture of polyamines and polyisocyana

1987-07-09

1989-01-17

Welsh, Maurice J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

25218212, 25218213, C08G 1832

Patent

active

047988622

ABSTRACT:
Polyureas are prepared from a system of (A) a polyisocyanate; and (B) a mixture of polyamines containing (i) from 60 to 25 percent by weight of the mixture of an aromatic polyamine; and (ii) from 40 to 75 percent by weight of the mixture of an aliphatic polyamine.

REFERENCES:
patent: 4530941 (1985-07-01), Turner et al.

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