Polyether polyurethane elastomers

Details Polyether polyurethane elastomers Polyether polyurethane elastomers

1982-05-13

1984-07-31

Kight, III, John

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...

506 60, 506 66, C08G 1848, C08G 1832

Patent

active

044631553

ABSTRACT:
The composition described herein is a polyurethane derived from the reaction of a polyether diol, such as polytetrahydrofuran diol, having a number average molecular weight of 1,000-4,000, preferably about 2,000, with a polyether diisocyanate prepolymer, the amount of diol representing about 5-20 percent of the combined weight of diol and prepolymer, with simultaneous chain extension with a diamine curing agent. The product has improved dynamic properties, such as Texus Flex and cut growth resistance with a minimum loss of other properties such as tensile and modulus strengths as compared to other comparable polyurethane systems.

REFERENCES:
patent: 3684770 (1972-08-01), Meisert et al.
patent: 3798200 (1974-03-01), Kaneko et al.
patent: 3876604 (1975-04-01), Caruso et al.
patent: 3899438 (1975-08-01), Kalil
patent: 3963681 (1976-06-01), Kaneko et al.
patent: 4075150 (1978-02-01), Hoeschele

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