Golf ball,申请号US201113179657-传众专利搜索

发明名称	Golf ball
摘要	An object of the present invention is to provide a golf ball traveling a greater distance by improving the properties of the spherical core. The present invention provides a golf ball comprising a spherical core, and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator, a filler and a polynuclear aromatic organic sulfur compound or a derivative thereof, and the spherical core has a specific hardness distribution without decreasing hardness from a central point toward a surface of the spherical core in JIS-C hardness.
申请公布号	US9199130(B2)	申请公布日期	2015.12.01
申请号	US201113179657	申请日期	2011.07.11
申请人	DUNLOP SPORTS CO. LTD.	发明人	Fushihara Kazuhisa;Isogawa Kazuhiko
分类号	A63B37/02;A63B37/00;C08L9/00	主分类号	A63B37/02
代理机构	Birch Stewart Kolasch & Birch, LLP	代理人	Birch Stewart Kolasch & Birch, LLP
主权项	1. A golf ball comprising: a spherical core, andat least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator, a filler and 2-naphthalene thiol or a metal salt thereof, the spherical core has a hardness distribution that satisfies B<A≦C, and JIS-C hardness does not decrease in a direction from the spherical core central point toward the spherical core surface, wherein A=(Hardness H5 at a distance of 5 mm from the central point of the spherical core)−(Central hardness HO at the central point of the spherical core); B=(Hardness H12.5 at a distance of 12.5 mm from the central point of the spherical core)−(Hardness H5 at a distance of 5 mm from the central point of the spherical core); C=(Surface hardness Hs at the surface of the spherical core)−(Hardness H12.5 at a distance of 12.5 mm from the central point of the spherical core); and B ranges from 0 to 4 in JIS-C hardness.
地址	Kobe-shi JP