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    • 3. 发明授权
    • Golf ball
    • 高尔夫球
    • US09409058B2
    • 2016-08-09
    • US13338868
    • 2011-12-28
    • Chiemi MikuraKazuhisa FushiharaMikio Yamada
    • Chiemi MikuraKazuhisa FushiharaMikio Yamada
    • A63B37/06A63B37/00
    • A63B37/0054A63B37/0062A63B37/0074
    • An object of the present invention is to provide a golf ball having a great flight distance on driver shots. The present invention provides a golf ball having a spherical core and at least one cover layer covering the spherical core, wherein when JIS-C hardness, which is measured at nine points obtained by dividing a radius of the spherical core into equal parts having 12.5% intervals therebetween, is plotted against distance (%) from a core center, the spherical core is such that R2 of a linear approximation curve obtained from the least square method is 0.95 or higher, and a hardness difference between a core surface hardness and a core central hardness is 15 or higher in JIS-C hardness.
    • 本发明的目的是提供一种在驾驶员射击上具有很大飞行距离的高尔夫球。 本发明提供一种高尔夫球,其具有球形芯和覆盖球形芯的至少一个覆盖层,其中当JIS-C硬度在通过将球形芯的半径除以12.5% 间隔,相对于芯心的距离(%)绘制,球形芯使得从最小二乘法获得的线性近似曲线的R2为0.95或更高,并且芯表面硬度和芯之间的硬度差 JIS-C硬度的中心硬度为15以上。
    • 4. 发明授权
    • Golf ball
    • 高尔夫球
    • US09364720B2
    • 2016-06-14
    • US13339051
    • 2011-12-28
    • Chiemi MikuraKazuhisa FushiharaMikio Yamada
    • Chiemi MikuraKazuhisa FushiharaMikio Yamada
    • A63B37/06A63B37/00
    • A63B37/0054A63B37/0062
    • An object of the present invention is to provide a golf ball traveling a great distance of a driver shot. The present invention provides a golf ball having 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) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator, (d) a carboxylic acid and/or a salt thereof, and (e) an organic sulfur compound having a naphthalene ring, provided that the rubber composition further contains (e) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.
    • 本发明的一个目的是提供一种高速球,该高尔夫球在驾驶员镜头的距离很远的地方行进。 本发明提供一种高尔夫球,其具有球形芯和覆盖球形芯的至少一个覆盖层,其中球形芯由橡胶组合物形成,该橡胶组合物含有(a)基础橡胶,(b)α, 具有3-8个碳原子的羧酸和/或其金属盐作为共交联剂,(c)交联引发剂,(d)羧酸和/或其盐,和(e)有机硫化合物 具有萘环,条件是橡胶组合物在仅含(b)具有3-8个碳原子的α,β-不饱和羧酸作为共交联剂的情况下还含有(e)金属化合物。