Polyurethane compositions having low hysteresis

Details Polyurethane compositions having low hysteresis Polyurethane compositions having low hysteresis

1984-02-08

1985-03-26

Cockeram, Herbert S.

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 63, 528 65, 152330R, C08G 1810, C08G 1832

Patent

active

045074593

ABSTRACT:
This invention pertains to the synthesis of polyurethane systems having low hysteresis. The systems are generated by reacting a prepolymer of a mononuclear diisocyanate and a polyol with a chain extender mix of a mononuclear aromatic diamine and a polyol. The prepolymer should have a free isocyanate content of from 2 to about 12% by weight and the chain extender mix should have an amine to polyol equivalent from about 0.5 to 5:1.

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