Papermaking machine belt and method for producing the same

Details Papermaking machine belt and method for producing the same Papermaking machine belt and method for producing the same

D - Textiles, Paper

21

F

D21F 1/10 (2006.01) B29D 29/06 (2006.01) C08G 18/10 (2006.01) C08G 18/42 (2006.01) D21F 3/02 (2006.01) D21F 7/08 (2006.01)

Patent

CA 2497855

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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