Patent ID: 7090747
Filing Date: 2006-08-15
Classification: C08G,D21F,Y10S,Y10T

Abstract:
1. A papermaking belt comprising a reinforcing substrate embedded in a thermosetting polyurethane layer including an inner polyurethane layer and an outer polyurethane layer adhering to an outer peripheral surface of said inner polyurethane layer, wherein the polyurethane layer forming the outer peripheral surface being made of a composition containing a urethane prepolymer having isocyanate groups on the ends thereof and a hardener containing dimethylthiotoluenediamine, said urethane prepolymer and said hardener being mixed with each other in a ratio setting the value of the equivalent ratio (H/NCO) between active hydrogen groups (H) of said hardener and the isocyanate groups (NCO) of said urethane prepolymer to 1<H/NCO<1.15.