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1. 发明公开

EP3156441A1 GOLF BALL 有权转让
标题翻译：高尔夫球
公开(公告)号：EP3156441A1
公开(公告)日：2017-04-19
申请号：EP16203083.7
申请日：2013-04-19
申请人： Dunlop Sports Co., Ltd.
发明人： ISOGAWA, Kazuhiko , TACHIBANA, Kosuke
IPC分类号： C08K5/00 , C08K5/098 , A63B37/00 , C08K5/09 , A63B37/06
CPC分类号： A63B37/0054 , A63B37/0076 , A63B37/0092 , A63B37/06 , C08K5/0025 , C08K5/09 , C08K5/098 , C08K2201/014 , C08L21/00
摘要： A golf ball 2 includes a core 4, a first mid layer 6, a second mid layer 8, and a cover 12. The core 4 includes a center 18 and an envelope layer 20. The center 18 is formed by crosslinking a first rubber composition, and the envelope layer 20 is formed by crosslinking a second rubber composition. The first rubber composition or the second rubber composition includes a base rubber, a co-crosslinking agent, a crosslinking initiator, and an acid and/or a salt. The co-crosslinking agent is:
(1) an α , β-unsaturated carboxylic acid having 3 to 8 carbon atoms; and/or
(2) a metal salt of an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms.
A hardness Hm2 of the second mid layer 8 is greater than a hardness Hm1 of the first mid layer 6. The hardness Hm2 is greater than a hardness Hc of the cover 12.
摘要翻译：高尔夫球2包括芯4，第一中间层6，第二中间层8和盖12.芯4包括中心18和包层20.中心18通过将第一橡胶组合物并且通过交联第二橡胶组合物形成包络层20。第一橡胶组合物或第二橡胶组合物包括基础橡胶，共交联剂，交联引发剂和酸和/或盐。共交联剂为：（1）具有3-8个碳原子的±，2-不饱和羧酸; 和/或（2）具有3-8个碳原子的±，2-不饱和羧酸的金属盐。第二中间层8的硬度Hm2大于第一中间层6的硬度Hm1。硬度Hm2大于盖12的硬度Hc。

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