发明授权
- 专利标题: Golf ball
- 专利标题(中): 高尔夫球
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申请号: US13599441申请日: 2012-08-30
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公开(公告)号: US09028343B2公开(公告)日: 2015-05-12
- 发明人: Toshiyuki Tarao , Kazuyoshi Shiga , Chiemi Mikura , Kazuhisa Fushihara
- 申请人: Toshiyuki Tarao , Kazuyoshi Shiga , Chiemi Mikura , Kazuhisa Fushihara
- 申请人地址: unknown Kobe, Hyogo
- 专利权人: Dunlop Sports Co., Ltd.
- 当前专利权人: Dunlop Sports Co., Ltd.
- 当前专利权人地址: unknown Kobe, Hyogo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2011-189296 20110831
- 主分类号: A63B37/12
- IPC分类号: A63B37/12 ; A63B37/14 ; A63B37/00 ; B29C43/14 ; C08K5/098
摘要:
The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the cover is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition satisfying properties of rebound resilience of 54% or more and a shear loss modulus G″ of 5.03×106 Pa or less when measured in a shear mode using a dynamic viscoelasticity measuring apparatus at the conditions of the temperature of 0° C., and the oscillation frequency of 10 Hz, and the spherical core has a hardness distribution that R2 of a linear approximate curve determined by a least-squares method is 0.95 or more, when plotting JIS-C hardness measured at a center, a surface and at intervals of 2.5 mm from the center of the spherical core, versus distances from the center of the spherical core.
公开/授权文献
- US20130053182A1 GOLF BALL 公开/授权日:2013-02-28
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