Dunlop Sports Company Limited

Tomoka Kitago

Takahiro Shigemitsu

Ryo Murakami

Hideaki Kimura

Kazuyoshi Shiga

Kazuki Shiga

The present invention aims to provide a golf ball resin composition excellent in resilience and flexibility, and a golf ball having excellent properties in terms of resilience and shot feeling. The present invention relates to a golf ball resin composition, including: (A) at least one selected from the group consisting of: (a-1) a binary copolymer of an olefin and a C3-C8 &#x3b1;,&#x3b2;-unsaturated carboxylic acid; (a-2) a metal ion-neutralized product of a binary copolymer of an olefin and a C3-C8 &#x3b1;,&#x3b2;-unsaturated carboxylic acid; (a-3) a ternary copolymer of an olefin, a C3-C8 &#x3b1;,&#x3b2;-unsaturated carboxylic acid, and an &#x3b1;,&#x3b2;-unsaturated carboxylic acid ester; and (a-4) a metal ion-neutralized product of a ternary copolymer of an olefin, a C3-C8 &#x3b1;,&#x3b2;-unsaturated carboxylic acid, and an &#x3b1;,&#x3b2;-unsaturated carboxylic acid ester, and (B) a compound containing a hydrocarbon chain, a cationic moiety, and an anionic moiety in its molecule.

Golf ball resin composition and golf ball

An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition having the spin-lattice relaxation time (T) ofC nucleus measured by a High resolution solid state carbon nuclear magnetic resonance (NMR) method of 7.3 seconds or shorter.

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Hyogo, Japan

Tomoka Kitago