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    • 51. 发明专利
    • Rubber composition for golf ball and golf ball
    • 高尔夫球和高尔夫球的橡胶组合物
    • JP2012020122A
    • 2012-02-02
    • JP2011140110
    • 2011-06-24
    • Bridgestone Sports Co Ltdブリヂストンスポーツ株式会社
    • OZAWA YUICHIRO
    • A63B37/00A63B37/04C08K3/22C08K5/09C08K5/14C08K5/37C08L21/00
    • C08K5/14A63B37/005A63B37/0073A63B37/0074A63B37/0075C08K5/098C08K5/37C08L21/00
    • PROBLEM TO BE SOLVED: To provide a golf ball-forming rubber composition which can be advantageously used for pressure-molding center cores for solid golf balls and wound golf balls and for pressure-molding one-piece golf balls, and from which can be obtained molded products of a suitable hardness and improved initial velocity, and to provide a golf ball which is produced using such a rubber composition and has a high rebound.SOLUTION: The invention provides a rubber composition for golf balls which includes (A) a base rubber, (B) a metal salt of an unsaturated carboxylic acid and/or an unsaturated carboxylic acid and zinc oxide, (C) an organic peroxide, and (D) from 0.1 to 5 parts by mass of a metal salt of a thiol having the general formula (R-S)nM (wherein R is a monovalent hydrocarbon group having from 12 to 30 carbons, exclusive of aromatic groups; n is an integer such as 1, 2 or 3; and M is a metal) per 100 parts by mass of the base rubber.
    • 要解决的问题:提供一种高尔夫球形成橡胶组合物,其可有利地用于对固体高尔夫球和卷绕的高尔夫球进行加压成型的中心芯和用于单件高尔夫球的压力成型,并从其中 可以获得具有合适的硬度和改善的初始速度的模制产品,并提供使用这种橡胶组合物生产并具有高回弹性的高尔夫球。 解决方案:本发明提供一种用于高尔夫球的橡胶组合物,其包括(A)基础橡胶,(B)不饱和羧酸和/或不饱和羧酸和氧化锌的金属盐,(C)有机 过氧化物,和(D)0.1〜5质量份具有通式(RS)nM的硫醇金属盐(其中R为不含芳族基团的碳原子数12〜30的一价烃基; n为 整数,如1,2或3; M为金属)/ 100质量份的基础橡胶。 版权所有(C)2012,JPO&INPIT
    • 56. 发明专利
    • The multi-piece solid golf ball
    • 多层固体高尔夫球
    • JP2011218162A
    • 2011-11-04
    • JP2011072475
    • 2011-03-29
    • Bridgestone Sports Co Ltdブリヂストンスポーツ株式会社
    • UMEZAWA JUNJISATO KATSUNORIHIGUCHI HIROSHINAKAGAWA TAKUMA
    • A63B37/00A63B37/04
    • A63B37/0004A63B37/0006A63B37/0012A63B37/0016A63B37/0017A63B37/0018A63B37/0019A63B37/002A63B37/0021A63B37/0031A63B37/0033A63B37/0035A63B37/0043A63B37/0045A63B37/0064A63B37/0065A63B37/0066A63B37/0075A63B37/0077A63B37/008A63B37/0083A63B37/0084A63B37/009A63B37/0092A63B37/0096
    • PROBLEM TO BE SOLVED: To provide a multi-piece solid golf ball, while allowing substantial reduction in a distance traveled by the ball when hit at a high HS region, capable of achieving a dominant distance traveled by the ball when hit at a low HS region.SOLUTION: The multi-piece solid golf ball has a solid core, an inner cover layer and an outer cover layer, wherein the outer cover layer has a plurality of dimples on a surface thereof. The inner cover layer has a thickness of from 0.8 to 3.0 mm and a material hardness (Shore D) of from 10 to 60, the outer cover layer has a thickness of from 0.7 to 3.0 mm and a material hardness (Shore D) of from 45 to 62, and the material hardness (Shore D) of the outer cover layer is higher than the material hardness (Shore D) of the inner cover layer. The number of dimples is ≥250 and ≤500: have a surface coverage of ≥70% and a volume ratio of ≥1.0%; are of at least three types of mutually differing dimple diameter (DM) and/or dimple depth (DP); and have an average depth of ≥0.18 mm and an average diameter-to-depth ratio (DM/DP) of ≤23. The ball has a coefficient of lift CL at a Reynolds number of 70,000 and a spin rate of 2,000 rpm which is maintained at ≥60% of the coefficient of lift CL at a Reynolds number of 80,000 and a spin rate of 2,000.
    • 要解决的问题:为了提供一种多件式固体高尔夫球,同时在高HS区域击球时允许大大减少球行进的距离,能够实现当击球时由球行进的主要距离 低HS区域。 多片固体高尔夫球具有实心芯,内覆盖层和外覆盖层,其中外覆盖层在其表面上具有多个凹坑。 内覆盖层的厚度为0.8〜3.0mm,材料硬度(肖氏D)为10〜60,外覆层的厚度为0.7〜3.0mm,材料硬度(肖氏D)为 45〜62,外覆层的材料硬度(Shore D)高于内覆层的材料硬度(肖氏D)。 凹坑数≥250,≤500:表面覆盖率≥70%,体积比≥1.0%; 具有至少三种类型的相互不同的凹坑直径(DM)和/或凹坑深度(DP); 平均深度≥0.18mm,平均直径 - 深度比(DM / DP)≤23。 球具有雷诺数为70,000的升力CL系数和2000rpm的旋转速率,其在雷诺数80,000和旋转速度为2000时保持在升力CL系数的≥60%。 版权所有(C)2012,JPO&INPIT
    • 57. 发明专利
    • Multi-piece solid golf ball
    • 多层固体高尔夫球
    • JP2011218161A
    • 2011-11-04
    • JP2011072470
    • 2011-03-29
    • Bridgestone Sports Co Ltdブリヂストンスポーツ株式会社
    • UMEZAWA JUNJISATO KATSUNORIHIGUCHI HIROSHINAKAGAWA TAKUMA
    • A63B37/00A63B37/04
    • A63B37/0004A63B37/0006A63B37/0012A63B37/0016A63B37/0017A63B37/0018A63B37/0019A63B37/002A63B37/0021A63B37/0031A63B37/0033A63B37/0035A63B37/0043A63B37/0045A63B37/0064A63B37/0065A63B37/0066A63B37/0075A63B37/0077A63B37/008A63B37/0083A63B37/0084A63B37/009A63B37/0092A63B37/0096
    • PROBLEM TO BE SOLVED: To provide a multi-piece solid golf ball, while allowing substantial reduction in a distance traveled by the ball when hit at a high HS region, capable of achieving a dominant distance traveled by the ball when hit at a low HS region.SOLUTION: The multi-piece solid golf ball has a solid core, an inner cover layer and an outer cover layer, wherein the outer cover layer has a plurality of dimples on a surface thereof. The inner cover layer has a thickness of from 0.8 to 3.0 mm and a material hardness (Shore D) of from 50 to 80, the outer cover layer has a material hardness (Shore D) of from 35 to 60, and the material hardness (Shore D) of the inner cover layer is higher than the material hardness (Shore D) of the outer cover layer. The number of dimples is ≥250 and ≤500: have a surface coverage of ≥70% and a volume ratio of ≥1.0%; are of at least three types of mutually differing dimple diameter (DM) and/or dimple depth (DP); and have an average depth of ≥0.18 mm and an average diameter-to-depth ratio (DM/DP) of ≤23. The ball has a coefficient of lift CL at a Reynolds number of 70,000 and a spin rate of 2,000 rpm which is maintained at ≥60% of the coefficient of lift CL at a Reynolds number of 80,000 and a spin rate of 2,000.
    • 要解决的问题:为了提供一种多件式固体高尔夫球,同时在高HS区域击球时允许大大减少球行进的距离,能够实现当击球时由球行进的主要距离 低HS区域。 多片固体高尔夫球具有实心芯,内覆盖层和外覆盖层,其中外覆盖层在其表面上具有多个凹坑。 内覆盖层的厚度为0.8〜3.0mm,材料硬度(肖氏D)为50〜80,外覆层的材料硬度(肖氏D)为35〜60,材料硬度( 内覆盖层的邵氏D)高于外覆盖层的材料硬度(肖氏D)。 凹坑数≥250,≤500:表面覆盖率≥70%,体积比≥1.0%; 具有至少三种类型的相互不同的凹坑直径(DM)和/或凹坑深度(DP); 平均深度≥0.18mm,平均直径 - 深度比(DM / DP)≤23。 球具有雷诺数为70,000的升力CL系数和2000rpm的旋转速率,其在雷诺数80,000和旋转速度为2000时保持在升力CL系数的≥60%。 版权所有(C)2012,JPO&INPIT