Patent ID: 8653157

Claim:
A polyurethane compound, comprising: (a) the reaction product of (1) an isocyanate and (2) one or more isocyanate reactive compounds including at least one polytetramethylene ether glycol and (b) an organic wax, wherein component (b) is a polyethylene wax, wherein the compound is essentially free of polytetrafluoroethylene, wherein the isocyanate is selected from the group consisting of 1,4-diisocyanatobenzene, 1,3-diisocyanato-o-xylene, 1,3-diisocyanato-p-xylene, 1,3-diisocyanato-m-xylene, 2,4-diisocyanato-1-chlorobenzene, 2,4-diisocyanato-1-nitrobenzene, 2,5-diisocyanato-1-nitrobenzene, m-phenylene diisocyanate, 2,4 toluene diisocyanate, 2,6-toluene diisocyanate, mixtures of 2,4- and 2,6-toluene diisocyanate, hexahydrotoluene diisocyanate, 1,5-naphthalene diisocyanate, 1-methoxy-2,4-phenylene diisocyanate, 2,2-, 2,4-, and 4,4′-biphenylmethane diisocyanate, methyl, diphenyl diisocyanate, 4,4′-biphenylene diisocyanate, 3,3′-dimethyl-4,4′-diphenylmethane diisocyanate, 3,3′-4,4′-diphenylmethane diisocyanate, and 3,3′-dimethyldiphenylmethane-4,4′-diisocyanate; 4,4′,4″-triphenylmethane triisocyanate, polymethylene polyphenylene polyisocyanate, 2,4,6-toluene triisocyanate; 4,4-dimethyl-2,2′-5,5′-diphenylmethane tetraisocyanate, isocyanate-terminated (MDI) prepolymer, modified 4,4′ diphenylmethane diisocyanate (mMDI) prepolymer, 2,2-, 2,4-, and 4,4-diphenylmethane diisocyanate and pre-polymers made thereof and combinations thereof, and wherein the compound when molded has a NBS abrasion according to ASTM method D1630 of at least 200.