公开(公告)号：US20170036071A1

公开(公告)日：2017-02-09

申请号：US15229876

申请日：2016-08-05

Applicant: Dunlop Sports Co. Ltd.

Inventor： Ryota SAKAMINE ,  Kazuyoshi SHIGA ,  Hikaru NAGAKURA ,  Takahiro SHIGEMITSU

IPC: A63B37/00

CPC classification number: A63B37/0087 ,  A63B37/0024 ,  A63B37/0031 ,  A63B37/0037 ,  A63B37/0039 ,  A63B37/0043 ,  A63B37/0049 ,  A63B37/0051 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0065 ,  A63B37/0074 ,  A63B37/0075 ,  A63B37/0077 ,  A63B2037/0079 ,  A63B2225/02 ,  C08K5/0025 ,  C08K5/098 ,  G01B5/0023

Abstract: An object of the present invention is to provide a golf ball traveling a great flight distance. The present invention provides a golf ball comprising a spherical core and a cover covering the spherical core, wherein the golf ball has a ratio (t2/t1) of a time (t2) to a time (t1) of 1.05 or more in a hitting test using a driver (at a head speed of 40 m/sec), wherein the time (t1) is a time taken from a moment that the driver begins to contact with the golf ball to a moment that the golf ball reaches a maximum deformation amount, and the time (t2) is a time taken from the moment that the golf ball reaches the maximum deformation amount to a moment that the golf ball leaves the driver.

Abstract translation: 本发明的目的是提供一种高飞行距离飞行的高尔夫球。 本发明提供一种高尔夫球，其包括球形芯和覆盖球形芯的盖，其中高尔夫球在击球时具有时间（t2）与时间（t1）之间的比值（t2 / t1）为1.05以上 使用驾驶员（头速度为40m / sec）进行测试，其中时间（t1）是从驾驶员开始与高尔夫球接触的时刻到高尔夫球达到最大变形的时刻所花费的时间 时间（t2）是从高尔夫球达到最大变形量到高尔夫球离开驾驶员的时刻所花费的时间。

公开(公告)号：US20170028262A1

公开(公告)日：2017-02-02

申请号：US15223778

申请日：2016-07-29

Applicant: Dunlop Sports Co. Ltd.

Inventor： Hikaru NAGAKURA ,  Kazuyoshi SHIGA ,  Ryota SAKAMINE ,  Takahiro SHIGEMITSU

IPC: A63B37/00

CPC classification number: A63B37/0061 ,  A63B37/0031 ,  A63B37/0037 ,  A63B37/0038 ,  A63B37/0051 ,  A63B37/006 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0065 ,  A63B37/0074 ,  A63B2225/02 ,  C08K5/098

Abstract: An object of the present invention is to provide a golf ball having an excellent initial velocity when being hit at a head speed of 50 m/sec and an improved initial velocity when being hit at a head speed of 40 m/sec. The present invention provides a golf ball comprising a spherical core and a cover covering the spherical core, wherein the golf ball has a rebound equivalence energy ratio (R40) ranging from 65.50% to 99.0% at a deformation amount of 7%, and a rebound equivalence energy ratio (R50) ranging from 20.0% to 70.0% at a deformation amount of 19%, in a compression test (measurement temperature: −70° C., compression speed: 30 mm/min) applying a load to the golf ball along a radial direction of the golf ball.

Abstract translation: 本发明的目的是提供一种当以50m /秒的头速度击打时具有优异的初始速度的高尔夫球，并且以40m /秒的头部速度被击打时提高了初始速度。 本发明提供一种高尔夫球，其包括球形芯和覆盖球形芯的盖，其中高尔夫球的变形量为7％时的回弹当量能量比（R40）为65.50％至99.0％，反弹 在压缩试验（测量温度：-70℃，压缩速度：30mm / min）中，在变形量为19％时的等效能量比（R50）为20.0％〜70.0％，对高尔夫球施加负荷 沿着高尔夫球的径向。

公开(公告)号：US20170028261A1

公开(公告)日：2017-02-02

申请号：US15223591

申请日：2016-07-29

Applicant: Dunlop Sports Co. Ltd.

Inventor： Ryota SAKAMINE ,  Hikaru NAGAKURA ,  Kazuyoshi SHIGA ,  Takahiro SHIGEMITSU

IPC: A63B37/00

CPC classification number: A63B37/0061 ,  A63B37/0051 ,  A63B37/006 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0065 ,  A63B37/0074 ,  A63B37/02 ,  A63B37/04 ,  A63B37/06

Abstract: An object of the present invention is to provide a golf ball having an excellent initial velocity when being hit at a head speed of 50 m/sec and an improved initial velocity when being hit at a head speed of 40 m/sec. The present invention provides a golf ball comprising a spherical core and at least one cover covering the spherical core, wherein the spherical core is formed from a core rubber composition containing (a) a base rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator and (x) a crosslinked rubber powder, and (x) the crosslinked rubber powder is formed from a rubber composition containing (a1) a base rubber, (b1) a co-crosslinking agent, (c1) a crosslinking initiator and (r) a resin component.

Abstract translation: 本发明的目的是提供一种当以50m /秒的头速度击打时具有优异的初始速度的高尔夫球，并且以40m /秒的头部速度被击打时提高了初始速度。 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盖，其中球形芯由芯橡胶组合物形成，所述芯橡胶组合物包含（a）基础橡胶，（b）共交联剂， c）交联引发剂和（x）交联橡胶粉末，（x）交联橡胶粉末由含有（a1）基础橡胶，（b1）共交联剂，（c1）交联剂 引发剂和（r）树脂组分。

公开(公告)号：US20160144241A1

公开(公告)日：2016-05-26

申请号：US15013805

申请日：2016-02-02

Applicant: Dunlop Sports Co. Ltd.

Inventor： Ryota SAKAMINE ,  Chiemi MIKURA ,  Ayaka SHINDO

IPC: A63B37/00

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。

公开(公告)号：US20130244810A1

公开(公告)日：2013-09-19

申请号：US13830156

申请日：2013-03-14

Applicant: DUNLOP SPORTS CO., LTD.

Inventor： Chiemi MIKURA ,  Shun KURIHARA ,  Ayaka SHINDO ,  Ryota SAKAMINE

IPC: A63B37/04

CPC classification number: A63B37/04 ,  A63B37/0051 ,  A63B37/0063 ,  C08K5/098 ,  C08K5/37 ,  C08L21/00

Abstract: An object of the present invention is to provide a golf ball traveling 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, (d) a carboxylic acid having 4 to 30 carbon atoms and/or a salt thereof, and (e) a halogen-substituted thiophenol and/or a metal salt thereof as an organic sulfur compound, provided that the rubber composition further contains (f) 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.

Abstract translation: 本发明的目的是提供一种在驾驶员镜头上行驶飞行距离很远的高尔夫球。 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，该橡胶组合物含有（a）基础橡胶，（b）α，β-不饱和羧酸 （c）交联引发剂，（d）具有4-30个碳原子的羧酸和/或其盐，和（e）具有3至8个碳原子的碳原子和/或其金属盐作为共交联剂， 卤素取代的苯硫酚和/或其金属盐作为有机硫化合物，条件是橡胶组合物在仅含（b）α，β-不饱和羧酸的情况下还含有（f）金属化合物，其具有3 8个碳原子作为共交联剂。

公开(公告)号：US20180118918A1

公开(公告)日：2018-05-03

申请号：US15716972

申请日：2017-09-27

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Chiemi MIKURA ,  Kazuyoshi SHIGA ,  Hikaru NAGAKURA ,  Ryota SAKAMINE

IPC: C08K5/098 ,  A63B37/00 ,  C08K5/14 ,  C08K5/375

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.

公开(公告)号：US20180050238A1

公开(公告)日：2018-02-22

申请号：US15795732

申请日：2017-10-27

Applicant: Dunlop Sports Co. Ltd.

Inventor： Ryota SAKAMINE ,  Kazuyoshi SHIGA ,  Hikaru NAGAKURA ,  Takahiro SHIGEMITSU

IPC: A63B37/00 ,  G01B5/00 ,  C08K5/098 ,  C08K5/00

CPC classification number: A63B37/0087 ,  A63B37/0024 ,  A63B37/0031 ,  A63B37/0037 ,  A63B37/0039 ,  A63B37/0043 ,  A63B37/0049 ,  A63B37/0051 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0065 ,  A63B37/0074 ,  A63B37/0075 ,  A63B37/0077 ,  A63B2037/0079 ,  A63B2225/02 ,  C08K5/0025 ,  C08K5/098 ,  C08K9/04 ,  G01B5/0023 ,  C08L9/00

Abstract: An object of the present invention is to provide a golf ball traveling a great flight distance. The present invention provides a golf ball comprising a spherical core and a cover covering the spherical core, wherein the golf ball has a ratio (t2/t1) of a time (t2) to a time (t1) of 1.05 or more in a hitting test using a driver (at a head speed of 40 m/sec), wherein the time (t1) is a time taken from a moment that the driver begins to contact with the golf ball to a moment that the golf ball reaches a maximum deformation amount, and the time (t2) is a time taken from the moment that the golf ball reaches the maximum deformation amount to a moment that the golf ball leaves the driver.

公开(公告)号：US20150273277A1

公开(公告)日：2015-10-01

申请号：US14672648

申请日：2015-03-30

Applicant: DUNLOP SPORTS CO., LTD.

Inventor： Ryota SAKAMINE ,  Katsumi TERAKAWA

IPC: A63B37/00

CPC classification number: A63B37/0051 ,  A63B37/0062 ,  A63B37/0063 ,  A63B37/0074 ,  A63B37/0076 ,  C08L9/00 ,  C08L2205/22

Abstract: An object of the present invention is to provide a golf ball excellent in shot feeling, flight distance and durability. 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 core rubber composition containing (a) a base rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (x) a crosslinked rubber powder; (x) the crosslinked rubber powder contains (x1) soft particles with a hardness difference (Hs−Hp) between a particle hardness (Hp) of the soft particles and a surface hardness (Hs) of the spherical core being 20 or more in JIS-C hardness, and a hardness difference (Hs5−Hp) between the particle hardness (Hp) of the soft particles and a hardness (Hs5) at 5 mm point inside the surface of the spherical core being 15 or more in JIS-C hardness; and the core rubber composition contains (x1) the soft particles in an amount of 1.0 mass % or more.

Abstract translation: 本发明的目的是提供一种射击感，飞行距离和耐久性优异的高尔夫球。 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，其中球形芯由芯橡胶组合物形成，所述芯橡胶组合物包含（a）基础橡胶，（b）共交联剂， （c）交联引发剂，和（x）交联橡胶粉末; （x）交联橡胶粉末含有软质颗粒的颗粒硬度（Hp）与球形芯的表面硬度（Hs）之间的硬度差（Hs-Hp）在JIS中为20以上的（x1）软质颗粒 -C硬度和软质粒子的粒子硬度（Hp）与球状核心表面的5mm点处的硬度（Hs5）之间的硬度差（Hs5-Hp）在JIS-C硬度中为15以上 ; 核心橡胶组合物含有（x1）1.0质量％以上的软质粒子。

公开(公告)号：US20140357408A1

公开(公告)日：2014-12-04

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: A63B37/00 ,  B29C43/18 ,  B29C43/00 ,  A63B45/00

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，bgr-不饱和羧酸和/或金属的橡胶组合物 其作为共交联剂的盐，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。

公开(公告)号：US20140357407A1

公开(公告)日：2014-12-04

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: A63B37/00

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.

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，其包括球形芯和至少一个覆盖球形芯的覆盖层，其中当在距离为0％（核心中心）的位置处测量球核的JIS-C硬度为37.5％时， 75.0％和100％（核心表面），其表面硬度（Hs）与其中心硬度（Ho）之间的硬度差（Hs-Ho）为20以上， 硬度差（H37.5-Ho）与硬度差（H75.0-Ho）之差（H37.5-Ho）/（H75.0-Ho））为0.6以下，压缩变形量 （mm））和37.5％点硬度（H37.5）满足H37.5＆nlE; -9×D + 95的关系。