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公开(公告)号：US09855467B2
公开(公告)日：2018-01-02
申请号：US14291229
申请日：2014-05-30
Applicant: Dunlop Sports Co., Ltd.
Inventor： Ayaka Shindo , Chiemi Mikura , Ryota Sakamine , Sho Goji
IPC: A63B37/02 , A63B37/04 , A63B37/06 , A63B37/00 , C08K5/00 , C08L9/00 , C08K5/09 , C08G18/48 , C08G18/76 , C08L75/08 , C08K5/098 , C08K5/14
CPC classification number: A63B37/0092 , A63B37/0051 , A63B37/0063 , A63B37/0065 , A63B37/0074 , C08G18/4854 , C08G18/7671 , C08K5/0025 , C08K5/09 , C08K5/098 , C08K5/14 , C08L9/00 , C08L75/08 , C08L2666/52 , C08L21/00
Abstract: An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein when JIS-C hardness of the spherical core is measured at points located at distances of 0% (core center), 37.5%, 75.0% and 100% (core surface) from the core center of the spherical core, a hardness difference (Hs−Ho) between a surface hardness (Hs) thereof and a center hardness (Ho) thereof is 20 or more, a ratio ((H37.5−Ho)/(H75.0−Ho)) of a hardness difference (H37.5−Ho) to a hardness difference (H75.0−Ho) is 0.6 or less, and a compression deformation amount (D (mm)) of the spherical core and the 37.5% point hardness (H37.5) satisfy a relation of H37.5≦−9×D+95.
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公开(公告)号：US20160136492A1
公开(公告)日：2016-05-19
申请号：US14940791
申请日：2015-11-13
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Chiemi Mikura , Sho Goji , Kazuyoshi Shiga , Kuniyasu Horiuchi , Toshiyuki Tarao , Hidetaka Inoue , Hitoshi Oyama , Hiroshi Hasegawa
CPC classification number: A63B60/08 , A63B53/14 , A63B2209/00 , C08K7/22
Abstract: An object of the present invention is to provide a grip for sporting goods excellent in tensile strength and having a light weight. The present invention provides a grip for sporting goods comprising a cylindrical portion composed of a cylindrical inner layer and a cylindrical outer layer covering the cylindrical inner layer, wherein the cylindrical inner layer is a porous rubber layer or a porous resin layer, and the cylindrical outer layer is formed from a rubber composition containing an acrylonitrile-butadiene based rubber.
Abstract translation: 本发明的目的是提供一种拉伸强度优异且重量轻的运动用品的手柄。 本发明提供一种运动用品的把手，其特征在于，包括由圆筒状内层构成的圆筒部和覆盖所述圆筒状内层的圆筒状外层，其中，所述圆筒状内层为多孔橡胶层或多孔树脂层， 层由含有丙烯腈 - 丁二烯系橡胶的橡胶组合物形成。
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公开(公告)号：US09283439B2
公开(公告)日：2016-03-15
申请号：US14158325
申请日：2014-01-17
Applicant: Dunlop Sports Co. Ltd.
Inventor： Ryota Sakamine , Chiemi Mikura , Ayaka Shindo
CPC classification number: A63B37/0051 , A63B37/0007 , A63B37/0018 , A63B37/0054 , A63B37/0062 , A63B37/0063 , A63B37/0074 , A63B37/0075 , A63B37/0076 , A63B37/0092 , A63B37/0096 , A63B2037/0079 , C08K5/1535 , C08K5/45
Abstract: An object of the present invention is to provide a golf ball showing a low spin rate on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a carboxylic acid having a heterocyclic ring and/or a salt thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent.
Abstract translation: 本发明的目的是提供一种在驾驶员镜头上显示低旋转速率的高尔夫球。 本发明提供了一种高尔夫球，其包括球形芯和覆盖球形芯的至少一个覆盖层，其中球形芯由橡胶组合物形成，该橡胶组合物含有（a）基础橡胶，（b）α， 具有3-8个碳原子的羧酸和/或其金属盐作为共交联剂，（c）交联引发剂和（d）具有杂环的羧酸和/或其盐，条件是橡胶 组合物还含有（e）在仅含（b）具有3至8个碳原子的α，bgr-不饱和羧酸作为共交联剂的情况下的金属化合物。
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公开(公告)号：US11376476B2
公开(公告)日：2022-07-05
申请号：US15782577
申请日：2017-10-12
Applicant: Dunlop Sports Co. Ltd.
Inventor： Chiemi Mikura , Kazuyoshi Shiga , Hikaru Nagakura , Ryota Sakamine
Abstract: An object of the present invention is to provide a golf ball having an excellent flight performance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover covering the spherical core, wherein a hardness difference D1 (H75−H0) between a hardness H75 at a point radially located at a distance of 75% from a center of the spherical core and a center hardness H0 of the spherical core is 10 or more and 27 or less in Shore C hardness, and a hardness difference D2 (Hs−H75) between a surface hardness Hs of the spherical core and the hardness H75 at the point radially located at the distance of 75% from the center of the spherical core is 0 or more and 6.5 or less in Shore C hardness.
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公开(公告)号：US09586094B2
公开(公告)日：2017-03-07
申请号：US14292306
申请日：2014-05-30
Applicant: DUNLOP SPORTS CO., LTD.
Inventor： Ayaka Shindo , Chiemi Mikura , Ryota Sakamine , Sho Goji
IPC: A63B37/06 , A63B37/00 , B29C43/18 , B29C43/00 , B29K9/00 , B29K75/00 , B29K105/00 , B29L9/00 , B29L31/54 , B29K33/00
CPC classification number: A63B37/0074 , A63B37/0007 , A63B37/0018 , A63B37/0051 , A63B37/0063 , A63B37/0075 , A63B37/0076 , A63B37/0092 , A63B37/0096 , A63B2037/0079 , B29C43/003 , B29C43/18 , B29C2043/182 , B29K2009/00 , B29K2033/00 , B29K2075/00 , B29K2105/0032 , B29K2105/0085 , B29K2105/0088 , B29K2995/007 , B29L2009/00 , B29L2031/546
Abstract: A method for manufacturing a golf ball showing a great flight distance on driver shots for includes the steps of: preparing a rubber composition containing a base rubber, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, a crosslinking initiator and a carboxylic acid and/or a salt thereof; heat pressing the rubber composition at a press temperature ranging from t-40° C. to t-15° C. to mold a spherical core, wherein t ° C. is a one-minute half-life temperature of the crosslinking initiator; and forming at least one cover layer covering the spherical core.
Abstract translation: 一种在驾驶员镜头上显示出飞行距离大的高尔夫球的方法包括以下步骤：制备含有基础橡胶，具有3-8个碳原子的α，β-不饱和羧酸和/或金属盐的橡胶组合物 作为共交联剂，交联引发剂和羧酸和/或其盐; 在t-40℃至t-15℃的压力温度下对橡胶组合物进行热压，以成型球形芯，其中t℃为交联引发剂的1分钟半衰期; 以及形成覆盖所述球形芯的至少一个覆盖层。
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公开(公告)号：US09457234B2
公开(公告)日：2016-10-04
申请号：US14045465
申请日：2013-10-03
Applicant: Dunlop Sports Co., Ltd.
Inventor： Chiemi Mikura , Ryota Sakamine , Ayaka Shindo
CPC classification number: A63B37/0054 , A63B37/0007 , A63B37/0009 , A63B37/0018 , A63B37/0022 , A63B37/0051 , A63B37/0063 , A63B37/0074 , A63B37/0075 , A63B37/0076 , A63B37/008 , A63B45/00 , A63B2037/0079 , C08K5/37 , C08K5/372 , C08K5/38 , C08L9/00
Abstract: An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and at least one compound of (d) thiobenzoic acids and/or salts thereof, provided that the rubber composition further contains (e) a metal compound in case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, and the spherical core has a hardness difference (Hs−Ho) between a surface hardness (Hs) and a center hardness (Ho) thereof of 25 or more in JIS-C hardness.
Abstract translation: 本发明的目的是提供一种高尔夫球，其显示驾驶员射击的飞行距离很大。 本发明提供一种高尔夫球，其包括球形芯和覆盖球形芯的至少一个覆盖层，其中球形芯由橡胶组合物形成，所述橡胶组合物含有（a）基础橡胶，（b）α，β-不饱和羧酸 具有3至8个碳原子和/或其金属盐作为共交联剂，（c）交联引发剂和至少一种（d）硫代苯甲酸和/或其盐的化合物，条件是橡胶组合物还含有 （e）在仅含有（b）具有3〜8个碳原子的α，β-不饱和羧酸作为共交联剂的情况下的金属化合物，并且所述球形芯具有以下的硬度差（Hs-Ho）： 表面硬度（Hs）和中心硬度（Ho）在JIS-C硬度中为25以上。
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公开(公告)号：US09238161B2
公开(公告)日：2016-01-19
申请号：US14167259
申请日：2014-01-29
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Ayaka Shindo , Chiemi Mikura , Ryota Sakamine
CPC classification number: A63B37/0063 , A63B37/0051 , A63B37/0074 , C08K5/37
Abstract: An object of the present invention is to provide a golf ball showing a great flight distance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the spherical core is formed from a rubber composition containing (a) base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinking initiator and (d) a mercaptocarboxylic acid derivative and/or a dithiodicarboxylic acid derivative.
Abstract translation: 本发明的目的是提供一种高尔夫球，其显示驾驶员射击的飞行距离很大。 本发明提供一种高尔夫球，其包括球形芯和覆盖球形芯的至少一个覆盖层，其中球形芯由橡胶组合物形成，所述橡胶组合物含有（a）基础橡胶，（b）α，β-不饱和羧酸 具有3至8个碳原子的酸和/或其金属盐作为共交联剂，（c）交联引发剂和（d）巯基羧酸衍生物和/或二硫代二羧酸衍生物。
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公开(公告)号：US10590259B2
公开(公告)日：2020-03-17
申请号：US15716972
申请日：2017-09-27
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Chiemi Mikura , Kazuyoshi Shiga , Hikaru Nagakura , Ryota Sakamine
Abstract: A golf ball includes a spherical core, and a cover covering the spherical core. The spherical core is formed from a rubber composition including a base rubber, a co-cross-linking agent, a cross-linking initiator, and an unsaturated fatty acid and/or a metal salt thereof, the co-cross-linking agent includes α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof, the unsaturated fatty acid and/or metal salt thereof excludes an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and a metal salt thereof, an unsaturated aliphatic carboxylic acid that forms the unsaturated fatty acid and/or metal salt thereof has a functional group other than a carboxy group and a carbon-carbon unsaturated bond, and the rubber composition further includes a metal compound when the co-cross-linking agent is only an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms.
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公开(公告)号：US10232224B2
公开(公告)日：2019-03-19
申请号：US15608684
申请日：2017-05-30
Applicant: Dunlop Sports Co. Ltd.
Inventor： Ayaka Shindo , Hiroshi Tadaoka , Chiemi Mikura , Kazuyoshi Shiga
Abstract: An object of the present invention is to provide a golf ball having excellent resilience performance. The present invention provides a golf ball having a spherical core and at least one cover layer, wherein the spherical core is formed from a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, and (c) a crosslinking initiator, provided that the rubber composition further contains (d) a metal compound in the case of containing only (b) the α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms as the co-crosslinking agent, wherein (c) the crosslinking initiator includes a peroxy ketal represented by the formula (1), and substituents represented by R1 and R2 have a bond dissociation energy of 435 KJ/mol or more.
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公开(公告)号：US10188910B2
公开(公告)日：2019-01-29
申请号：US15782069
申请日：2017-10-12
Applicant: Dunlop Sports Co. Ltd.
Inventor： Chiemi Mikura , Kazuyoshi Shiga , Hikaru Nagakura , Ryota Sakamine
Abstract: An object of the present invention is to provide a golf ball having an excellent flight performance on driver shots. The present invention provides a golf ball comprising a spherical core and at least one cover covering the spherical core, wherein a hardness difference D1 (H75−H0) between a hardness H75 at a point located at a distance of 75% of a core radius from a center of the spherical core and a center hardness H0 of the spherical core is 15 or more and 35 or less in Shore C hardness, a hardness difference D2 (Hs−H75) between a surface hardness Hs of the spherical core and the hardness H75 at the point located at the distance of 75% of the core radius from the center of the spherical core is −1 or more and 3.5 or less in Shore C hardness, and a hardness difference D3 ((H0+H75)/2−H37.5) between a hardness of (the center hardness H0 of the spherical core+the hardness H75 at the point located at the distance of 75% of the core radius from the center of the spherical core)/2 and a hardness H37.5 at a point located at a distance of 37.5% of the core radius from the center of the spherical core is 0.5 or more and 6.5 or less in Shore C hardness.
