Patent ID: 7223181

Claim:
A golf ball comprising: (a) a core; and (b) a cover formed over said core by casting into a golf ball mold, that when cured at room temperature said cover has a Shore D hardness of 50D to 65D, the cover comprising: (1) a diisocyanate selected from the group consisting of toluene diisocyanate, 4,4′-diphenylmethane diisocyanate; isophorone diisocyanate and mixtures thereof; (2) polyoxytetramethylene ether glycol having a molecular weight of about 650–3000 wherein the diisocyanate and the polyoxytetramethylene ether glycol when reacted into a prepolymer have an NCO % content by weight from 5.5% to 8.0% of the prepolymer; and, (3) a curing agent blend consisting of: (A) dimethylthio-2,4-toluenediamine; and, (B) diethyl-2,4-toluenediamine.