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    • 100. 发明公开
    • GOLF BALL
    • 高尔夫球
    • EP2926871A1
    • 2015-10-07
    • EP15161732.1
    • 2015-03-30
    • Dunlop Sports Co., Ltd.
    • Isogawa, KazuhikoTachibana, KosukeTarao, Toshiyuki
    • A63B37/00C08G18/48C08G18/66C08G18/75C08G18/78C08G18/79C08G18/10C09D175/08C08G18/32
    • A63B37/0075A63B37/0022A63B37/0033A63B37/0037A63B37/0045A63B37/0049A63B37/0063A63B37/0076C08G18/10C08G18/3206C08G18/4854C08G18/6677C08G18/755C08G18/7831C08G18/792C09D175/08C08G18/722
    • 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.]
    • 本发明的目的是提供一种高尔夫球在驾驶员镜头上的飞行距离和接近射击的旋转速度之间达到良好的平衡,并且具有优异的耐污染性和射击感。 本发明提供了一种高尔夫球,其包括中间层,盖和漆膜,其中漆膜的基础树脂是通过多异氰酸酯组合物和含有包含聚醚的氨基甲酸酯多元醇的多元醇组合物之间的反应获得的聚氨酯 数均分子量为800〜3000的二醇作为构成成分,高尔夫球满足以下要求: 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和Me分别表示漆膜,中间层和盖的10%模量(kgf / cm 2) Tp,Tm和Tc分别表示漆膜,中间层和盖的厚度(mm); X表示多元醇组合物中的多异氰酸酯组合物中的NCO基与OH基的摩尔比(NCO / OH)。