Patent ID: 7879968

Claim:
A golf ball comprising a cover layer, a core, and optionally one or more intermediate layers, the cover layer comprising the reaction product of: A) one or more polyisocyanates selected from toluene diisocyanate, 4,4′-diphenylmethane diisocyanate, isophorone diisocyanate and any mixtures thereof; PPDI or cyclohexane diisocyanate; B) a polyol selected from polytetramethylene ether glycol (PTMG), PPG, or PEG; C) a dicyandiamide having a formula D) the chain extender or curing agent further comprising a compound selected from diethyl-2,4-toluenediamine; 4,4″-methylenebis-(3-chloro,2,6-diethyl)-aniline; 3,5-dimethylthio-2,4-toluenediamine; 3,5-dimethylthio-2,6-toluenediamine; cyclohexyldiamine, diphenylmethane diamine or any and all mixtures thereof.