Patent ID: 6221999
Filing Date: 2001-04-24
Classification: C08G

Abstract:
A polyurethane elastomer possessing a resilience of at least about 50 percent and a clarity index of at least about 80 percent obtained by subjecting to polyurethane elastomer-forming conditions a polyurethane elastomer-forming reaction mixture comprising:a) an isocyanate selected from the group consisting of diphenyl methane diisocyanate, isocyanate obtained from the reaction of polyether diol with diphenyl methane diisocyanate and mixtures thereof wherein at least a major proportion by weight of the diphenyl methane diisocyanate is the 4,4'-diphenyl methane diisocyanate isomer;b) at least one polyether diol; and,c) at least one diol chain extender of the general formula:HO--(CH.sub.2).sub.x --OHwherein x is an integer from 5 to about 16.