Use of modified diisocyanates for preparing linear thermoplastic

Details Use of modified diisocyanates for preparing linear thermoplastic Use of modified diisocyanates for preparing linear thermoplastic

1989-03-20

1991-05-07

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 59, 528 61, 528 65, 528 66, 528 76, 528 85, C08G 1810

Patent

active

050138111

ABSTRACT:
Linear polyurethane elastomers of a polyol component, at least two extender components, and a diisocyanate compound are prepared by reacting the diisocyanate compound with one of the extender components to form a modified diisocyanate component having a functionality of about 2 prior to reacting this modified component with the other components of the elastomer. These new elastomers can be processed at lower temperatures compared to elastomers prepared from similar compositions wherein the isocyanate compound is not modified.

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