| 摘要 |
The invention provides a papermaking machine belt comprising a polyurethane and a substrate, wherein the polyurethane is obtained by curing an isocyanate group-terminated urethane prepolymer with a hardener, the urethane prepolymer being a reaction product of (1) a phthalic acid polyester polyol represented by the following formula (I): (see formula I) wherein R1 is a bivalent group selected from the group consisting of (a) an alkylene group having 2 to 6 carbon atoms, and (b) a group represented by the following formula (II): -(R2O) n-R2- (II) wherein R2 is an alkylene group having 2 or 3 carbon atoms, and n is an integer of 1 to 3; and m is from 1 to 15, and (2) a diisocyanate.
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