Polyurethane elastomers from hindered aliphatic diisocyanates

Details Polyurethane elastomers from hindered aliphatic diisocyanates Polyurethane elastomers from hindered aliphatic diisocyanates

C - Chemistry, Metallurgy

08

G

402/131, 400/742

C08G 18/10 (2006.01) C08G 18/30 (2006.01) C08G 18/76 (2006.01) C08K 5/13 (2006.01)

Patent

CA 1235843

POLYURETHANE ELASTOMERS FROM HINDERED ALIPHATIC DIISOCYANATES Abstract of the Disclosure A polyurethane elastomer composition resistant to deterioration on aging at elevated temperature, formed by reaction of a reaction mixture comprising aliphatic diols and/or polyols, and an aliphatic diisocyanate of the formula: Image or an isocyanate-terminated prepolymer derived therefrom, R1 being hydrogen or C1-C8 alkyl, R2 being C1-C8 alkyl or substituted C1-C8 alkyl and X being arylene. A water reac- tive diisocyanate compound and, optionally a radical sca- venger compound is introduced into the reaction mixture before reaction thereof.

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