Patent ID: 9162112
Filing Date: 2015-10-20
Classification: A63B,C08K,C08L

Abstract:
1. A golf ball having 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 14 carbon atoms and/or a salt thereof, excluding (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or metal salt thereof, and (e) a halogen-substituted thiophenol and/or a metal salt thereof as an organic sulfur compound, provided that the rubber composition further contains (f) a metal compound if only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, and wherein the rubber composition contains (d) the carboxylic acid having 1 to 14 carbon atoms and/or the salt thereof in a content ranging from 0.5 parts to 30 parts by mass with respect to 100 parts by mass of (a) the base rubber.