Patent ID: 6966850
Filing Date: 2005-11-22
Classification: A63B,C08G,C08L

Abstract:
1. A two-piece solid golf ball comprising a solid core and an outer cover therefor, wherein the outer cover is formed from a cover-forming material consisting of components: (A) a thermoplastic polyurethane material, and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups; the outer cover has a thickness of 2.15 to 2.9 mm and the outer cover has a JIS C hardness of 68 to 87; the solid core is formed from a rubber material; and the solid core has a JIS C hardness as measured at any portion of the core is between 58 to 87, a JIS C hardness at a surface portion of the core is higher than a JIS C hardness at a center portion of the core, and a value obtained by subtracting the JIS C hardness at the center portion of the core from the JIS C hardness at the surface portion of the core is 20 or less.