CPC A63B 37/0051 (2013.01) [A63B 37/0024 (2013.01); A63B 37/0031 (2013.01); A63B 37/0039 (2013.01); A63B 37/0062 (2013.01)] | 11 Claims |
1. A golf ball comprising a core of one or more layers and a cover of one or more layers encasing the core, wherein at least one layer of the core is formed of the rubber composition comprising:
(a) a conjugated diene polymer,
(b) a copolymer of a conjugated diene compound and a non-conjugated olefin, and
(c) an organic peroxide, and
wherein the core has, in an internal hardness profile thereof, a hardness difference between a surface and a center of the core that is at least 15 on the JIS-C hardness scale, and
wherein water is included in the rubber composition and the water content per 100 parts by weight of the rubber component is from 0.1 to 10 parts by weight.
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