Bridgestone Sports Co., Ltd.

Yuki Mizuno

Atsushi Namba

A golf ball material contains (i) fine particles that have an average particle size of less than 300 μm and are composed of a crosslinked multi-component copolymer having conjugated diene units, non-conjugated olefin units and aromatic vinyl units; and (ii) a thermoplastic resin. The conjugated diene units include butadiene units, the non-conjugated olefin units include units selected from the group consisting of ethylene, propylene and 1-butene units, the aromatic vinyl units include styrene units, and the content of the conjugated diene units in the multi-component copolymer is 5 wt % or more. This golf ball material is soft, has an excellent rebound resilience and also has a good processability.

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Saitamaken, Japan

Yuki Mizuno