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: US12289953申请日: 2008-11-07
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公开(公告)号: US08877875B2公开(公告)日: 2014-11-04
- 发明人: Kazuya Kamino , Keiji Ohama , Toshiyuki Tarao
- 申请人: Kazuya Kamino , Keiji Ohama , Toshiyuki Tarao
- 申请人地址: JP Kobe-shi
- 专利权人: SRI Sports Limited
- 当前专利权人: SRI Sports Limited
- 当前专利权人地址: JP Kobe-shi
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2007-291124 20071108
- 主分类号: A63B37/12
- IPC分类号: A63B37/12 ; A63B37/00 ; C08L75/04 ; C08G18/83 ; C08G18/70 ; C08G18/10 ; C08G18/48 ; C08L33/10 ; C08L67/00
摘要:
The object of the present invention is to provide a golf ball that satisfies both of the flight distance at the shot with a driver, a long iron, and a middle iron and the controllability at the approach shot with a short iron and is also excellent in the abrasion resistance of the cover. The present invention provides a golf ball comprising a core consisting of a center and at least one intermediate layer covering the center, and a cover covering the core, wherein the cover is formed from a cover composition containing, as a resin component, a thermoplastic polyurethane (A) and a polyisocyanate mixture (B) in which a urethane prepolymer (b-1) having at least two isocyanate groups or a polyisocyanate (b-2) having at least three isocyanate groups is dispersed in a thermoplastic resin (b-3) which does not substantially react with an isocyanate group; and wherein the cover composition has a slab hardness of 60 or less in Shore D hardness, and the core has a hardness difference (Hs−Ho) between a surface hardness Hs and a center hardness Ho of from 15 to 50 in Shore D hardness.
公开/授权文献
- US20090124420A1 Golf ball 公开/授权日:2009-05-14
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