| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin composition for a golf ball excellent in resilience, flexibility, and fluidity, and a golf ball excellent in resilience and ball-hitting feeling.SOLUTION: The resin composition for a golf ball includes at least one type selected from a group consisting of (A) (a-1) a binary copolymer of an olefin and an α, &bgr;-unsaturated carboxylic acid having 3 to 8 carbon atoms; (a-2) a metal ion neutralized binary copolymer of an olefin and an α, &bgr;-unsaturated carboxylic acid having 3 to 8 carbon atoms; (a-3) a terpolymer of an olefin, an α, &bgr;-unsaturated carboxylic acid having 3 to 8 carbon atoms, and an α, &bgr;-unsaturated carboxylic acid ester; and (a-4) a metal ion neutralized terpolymer of an olefin, an α, &bgr;-unsaturated carboxylic acid having 3 to 8 carbon atoms, and an α, &bgr;-unsaturated carboxylic acid ester. The resin composition has rebound resilience of 45% or more, and a radius of an ion association is 0.40nm or more. |
