Elastomeric polyisocyanate-based polymers from polyoxyalkylene p

Details Elastomeric polyisocyanate-based polymers from polyoxyalkylene p Elastomeric polyisocyanate-based polymers from polyoxyalkylene p

1990-03-23

1992-06-16

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521174, 521176, 521914, 528 76, 528 77, 25218227, 568620, C08G 1848

Patent

active

051225484

ABSTRACT:
This invention relates to elastomeric polyisocyanate-based polymers, particularly polyurethane elastomeric polymers, prepared from polyol compositions comprising a polyoxyalkylene polyol having a hydroxyl equivalent weight of from about 800 to about 3000 and containing from 10 to 40 weight percent polymerized ethylene oxide wherein the ethylene oxide is distributed as a plurality of internal polyoxyethylene blocks having a molecular weight of from about 176 to about 600, and a polyoxyethylene cap use of such polyols. Polyols provides for polymers exhibiting desirable physical properties including good abrasion wear resistance.

REFERENCES:
patent: 3821130 (1974-06-01), Barron et al.
patent: 4125505 (1978-11-01), Critchfield et al.
patent: 4243760 (1981-01-01), McDaniel et al.
patent: 4575518 (1986-03-01), Rasshofer et al.
patent: 4745170 (1988-05-01), Bushman et al.

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