Polyurethane elastomers prepared from polyol or polymer/polyol-c

Details Polyurethane elastomers prepared from polyol or polymer/polyol-c Polyurethane elastomers prepared from polyol or polymer/polyol-c

1980-04-11

1982-01-26

Welsh, Maurice J.

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 76, 528 77, C08G 1862

Patent

active

043129730

ABSTRACT:
The invention provides polyurethane elastomers having satisfactory modulus characteristics which are prepared from a polyol-chain extender mixture consisting of (1) a poly (oxypropylene-oxyethylene) polyol having a hydroxyl number of from about 20 to 60, an oxyethylene cap of from about 10 to 30 weight percent and an internal oxyethylene content of from about 30 to 60 weight percent and (2) ethylene glycol, or a polymer/polyol-chain extender mixture wherein the polyol-chain extender is as aforesaid, and the resulting polyurethane elastomers possess unexpected hydrolytic stability.

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