| 发明名称 | Golf ball material and golf ball using the same | ||
| 摘要 | An object of the present invention is to provide a golf ball which travels a great distance on the driver shots and stops quickly on the green on the approach shots. The present invention is directed to a golf ball material having a shear loss modulus G″ of 2.11×107 Pa or less, and a ratio (E″/G″) of a tensile loss modulus E″ to the shear loss modulus G″ of 1.78 or more, when measuring the shear loss modulus G″ in a shear mode and the tensile loss modulus E″ in a tensile mode at conditions of a temperature of 0° C., oscillation frequency of 10 Hz using a dynamic viscoelasticity measuring apparatus. | ||
| 申请公布号 | US8974319(B2) | 申请公布日期 | 2015.03.10 |
| 申请号 | US201012946528 | 申请日期 | 2010.11.15 |
| 申请人 | SRI Sports Limited | 发明人 | Shiga Kazuyoshi;Tarao Toshiyuki;Ohama Keiji |
| 分类号 | A63B37/12;A63B37/14;A63B37/00 | 主分类号 | A63B37/12 |
| 代理机构 | Birch, Stewart, Kolasch & Birch, LLP | 代理人 | Birch, Stewart, Kolasch & Birch, LLP |
| 主权项 | 1. A golf ball cover material comprising a polyurethane as a resin component, wherein said polyurethane is formed from a polyether polyol with a number average molecular weight ranging from 200 to 3,000 and a hydroxyl value ranging from 94 mgKOH/g to 561 mgKOH/g as a polyol component, and wherein said golf ball cover material has a shear loss modulus G″ of 2.11×107 Pa or less, and a ratio (E″/G″) of a tensile loss modulus E″ to the shear loss modulus G″ of 1.78 or more, when measuring the shear loss modulus G″ in a shear mode and the tensile loss modulus E″ in a tensile mode at conditions of a temperature of 0° C., oscillation frequency of 10 Hz using a dynamic viscoelasticity measuring apparatus. | ||
| 地址 | Kobe JP | ||