Patent ID: 6984182
Filing Date: 2006-01-10
Classification: A63B,C08L

Abstract:
1. A golf ball comprising a solid core and a cover enclosing the core, wherein the cover includes at least two layers, an outermost layer and an inner layer disposed contiguous thereto, the cover outermost layer is formed of a thermoplastic resin base composition comprising 100 parts by weight of a thermoplastic resin and 0.2 to 5 parts by weight of a cholesteric liquid crystal polymer, and the cover inner layer is formed of a thermoplastic resin base composition comprising 100 parts by weight of a thermoplastic resin, up to 1 part by weight of titanium oxide, and up to 1 part by weight of a fluorescent pigment, wherein the composition of which the cover outermost layer is formed further comprises 0.01 to 0.5 part by weight of carbon black per 100 parts by weight of the cholesteric liquid crystal polymer, and wherein said solid core undergoes a compressive deflection amount of 2.5 to 5.0 mm when the load applied thereto is increased from an initial load of 10 kgf (98.07 N) to a final load of 130 kgf (1274.91 N), said cover outermost layer has a Shore D hardness of 50 to 62, said cover inner layer has a Shore D hardness of 45 to 55, and the golf ball as a whole undergoes a compressive deflection amount of 2.0 to 4.0 mm when the load applied thereto is increased from an initial load of 10 kgf (98.07 N) to a final load of 130 kgf (1274.91 N).