Patent ID: 9610477
Date: 2017-04-04
CPC Classifications: A63B,C08F,C08G

Claim:
1. A golf ball comprising at least one layer having a Shore C hardness of greater than 75 and consisting of a millable polyurethane rubber composition comprising a mixture of: (i) at least one millable urethane rubber consisting of: at least one polyether-based polyurethane rubber; at least one polyester-based polyurethane rubber; at least one polycaprolactone-based millable polyurethane rubber; or combinations thereof; (ii) at least one peroxide initiator; and (iii) N, N-m-Phenylenedimaleimide in an amount of at least about 25 parts per 100 parts of the millable urethane rubber; wherein the millable polyurethane rubber composition is vulcanized; and wherein the golf ball has CoR of at least about 0.700.