Patent ID: 9028343
Filing Date: 2015-05-12
Classification: A63B,B29C,C08K

Abstract:
1. A golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the cover layer is formed from a polyurethane composition containing as resin component a polyurethane elastomer formed from 1,4-bis(isocyanatomethyl)cyclohexane as a polyisocyanate component, wherein the polyurethane composition has a rebound resilience of 54% or more, a slab hardness ranging from 25 to 53 in Shore D hardness, and a shear loss modulus G″ of 5.03×10 wherein the spherical core has a hardness distribution that R wherein the resin component of the polyurethane composition contains the polyurethane elastomer in a content of 50 mass % or more, and wherein the 1,4-bis(isocyanatomethyl)cyclohexane constitutes its trans isomer in an amount of 80 mole % or more.