Patent ID: 8288478

Claim:
A golf ball, comprising: a core having a first Shore C surface hardness of C 1 in the range of 50 to 90; an intermediate layer surrounding the core; and a cover layer surrounding the intermediate layer having a second Shore C surface hardness of C 2 in the range of 60 to 95, the cover layer being formed from a thermoplastic polyurethane or polyurethane-urea composition that is produced by a reaction of: i) an isocyanate compound, ii) a moisture-resistant polyol having a weight average molecular weight in the range of 500 to 10,000 grams per mole and a hydroxyl value in the range of 30 to 120, and iii) a curing agent selected from hydroxyl-terminated or amine-terminated curing agents, and mixtures thereof, and wherein the ratio of C 2 to C 1 is in the range of 0.6 to 1.4, wherein the cover layer has a moisture vapor transmission rate between 3 grams/m 2 Â·day to 4 grams/m 2 Â·day.