Polyurethanes based on polyether blends

Details Polyurethanes based on polyether blends Polyurethanes based on polyether blends

1984-08-09

1986-05-13

Cockeram, Herbert S.

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...

521914, 528 44, 528 77, 252182, C08G 1824, C08G 1848, C08G 1876

Patent

active

045888027

ABSTRACT:
Polyurethane compositions based on aliphatic diisocyanates, or prepolymers of aliphatic diisocyanates, and blends of ethylene oxide capped polypropylene glycol polyethers of at least tri-functionality with ethylene oxide capped polypropylene glycol polyethers of di-functionality are disclosed. Suitable aliphatic diisocyanates comprise tertiary aralkyl isocyanates with a preferred isocyanate being para-tetramethylxylene diisocyanate (p-TMXDI). The compositions disclosed include reaction injection molding compositions.

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patent: 4350779 (1982-09-01), Dominguez et al.
patent: 4438248 (1984-03-01), Christman et al.
patent: 4439616 (1984-03-01), Singh et al.
patent: 4440705 (1984-04-01), Nissen et al.

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