Polyurethanes based on polyether blends

Details Polyurethanes based on polyether blends Polyurethanes based on polyether blends

C - Chemistry, Metallurgy

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C08G 18/66 (2006.01) B29C 39/00 (2006.01) C08G 18/48 (2006.01) C08G 18/73 (2006.01) C08G 18/75 (2006.01) C08G 18/76 (2006.01)

Patent

CA 1255427

61109-7409 29,846 POLYURETHANES BASED ON POLYETHER BLENDS 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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