| 摘要 |
PROBLEM TO BE SOLVED: To provide a golf ball 2 which is excellent in flying performance, shot feeling at impact and durability.SOLUTION: A golf ball 2 includes a spherical core 4, an intermediate layer 6 covering the core 4, a reinforcing layer 8 covering the intermediate layer 6 and a cover 10 covering the reinforcing layer 8. Base polymer of the intermediate layer 6 contains a thermoplastic elastomer containing a styrene block and an ionomer resin. The hardness of the intermediate layer 6 measured with a Shore-D type hardness meter is equal to or less than 54. Thickness of the intermediate layer 6 is between 0.5 mm and 1.6 mm. The base polymer of the reinforcing layer 8 is a reaction product of a carboxylic group-containing polyurethane and a polycarbodiimide. Main component of the base polymer of the cover 10 is an ionomer resin. Hardness of the base polymer of the cover 10 measured with the Shore-D type hardness meter is equal to or greater than 55. The thickness of the cover 10 is equal to or less than 1.2 mm. |
