发明公开
- 专利标题: GOLF BALL
- 专利标题(中): 高尔夫球
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申请号: EP15161732.1申请日: 2015-03-30
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公开(公告)号: EP2926871A1公开(公告)日: 2015-10-07
- 发明人: Isogawa, Kazuhiko , Tachibana, Kosuke , Tarao, Toshiyuki
- 申请人: Dunlop Sports Co., Ltd.
- 申请人地址: 6-9, Wakinohama-cho 3-chome Chuo-ku Kobe-shi Hyogo 651-0072 JP
- 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: 6-9, Wakinohama-cho 3-chome Chuo-ku Kobe-shi Hyogo 651-0072 JP
- 代理机构: Manitz, Finsterwald & Partner GbR
- 优先权: JP2014074634 20140331; JP2014074635 20140331
- 主分类号: A63B37/00
- IPC分类号: A63B37/00 ; C08G18/48 ; C08G18/66 ; C08G18/75 ; C08G18/78 ; C08G18/79 ; C08G18/10 ; C09D175/08 ; C08G18/32
摘要:
An object of the present invention is to provide a golf ball striking a good balance between a flight distance on driver shots and a spin rate on approach shots, and excellent in stain resistance and a shot feeling. The present invention provides a golf ball comprising an intermediate layer, a cover, and a paint film, wherein a base resin of the paint film is a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition containing a urethane polyol including a polyether diol with a number average molecular weight ranging from 800 to 3000 as a constituent component, and the golf ball satisfies the following requirements; Mp ≦ 200 × X - 75 Mp ≦ 100 Mm - Mc > 100 Tm > Tc > Tp Tm × Mm / Tc × Mc > 7.5 Tc × Mc / Tp × Mp > 2.4.
[Mp, Mm and Me represent 10 % modulus (kgf/cm 2 ) of the paint film, intermediate layer and cover, respectively; Tp, Tm and Tc represent thicknesses (mm) of the paint film, intermediate layer and cover, respectively; and X represents a molar ratio (NCO/OH) of a NCO group in the polyisocyanate composition to a OH group in the polyol composition.]
[Mp, Mm and Me represent 10 % modulus (kgf/cm 2 ) of the paint film, intermediate layer and cover, respectively; Tp, Tm and Tc represent thicknesses (mm) of the paint film, intermediate layer and cover, respectively; and X represents a molar ratio (NCO/OH) of a NCO group in the polyisocyanate composition to a OH group in the polyol composition.]
公开/授权文献
- EP2926871B1 GOLF BALL 公开/授权日:2019-06-12
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