Polyurethane compositions having low hysteresis

Details Polyurethane compositions having low hysteresis Polyurethane compositions having low hysteresis

C - Chemistry, Metallurgy

08

G

402/142

C08G 18/10 (2006.01) C08G 18/65 (2006.01) C08G 18/76 (2006.01)

Patent

CA 1236629

ABSTRACT OF THE DISCLOSURE 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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