Patent ID: 9498681
Filing Date: 2016-11-22
CPC Classification: A63B,C08J,C08K

Claim Text:
1. A golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing: (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, (d) a carboxylic acid having 1 to 9 carbon atoms and/or a salt thereof, wherein the C (e) organic sulfur compounds including (e1) an organic sulfur compound having a naphthalene ring and (e2) an organic sulfur compound having a polysulfide bond in a mass ratio ((e1)/(e2)) ranging from 0.1 to 1.5, and (f) a metal compound if the rubber composition contains only the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.