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公开(公告)号：US09221927B2
公开(公告)日：2015-12-29
申请号：US13728503
申请日：2012-12-27
Applicant: DUNLOP SPORTS CO., LTD.
Inventor： Takahiro Shigemitsu
CPC classification number: C08F20/02 , A63B37/0039 , A63B37/0045 , A63B37/0075 , C08K5/098 , C08L23/0876 , C08L9/00
Abstract: A golf ball resin composition that is excellent in resilience includes (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (B) a basic metal salt of a fatty acid.
Abstract translation: 回弹性优异的高尔夫球树脂组合物包括（A）至少一种选自（a-1）由烯烃组成的二元共聚物和α，β-不饱和羧酸的树脂成分，所述α和β-不饱和羧酸具有3〜 （a-2）由烯烃和具有3-8个碳原子的α，β-不饱和羧酸组成的二元共聚物的金属离子中和产物（a-3），（a-3） 由烯烃，具有3-8个碳原子的α，bgr-不饱和羧酸和α，β-不饱和羧酸酯组成的三元共聚物和（a-4）由金属离子交换树脂组成的离聚物树脂， 由烯烃，具有3-8个碳原子的α，bgr-不饱和羧酸和α，β-不饱和羧酸酯组成的三元共聚物的中和产物和（B）脂肪酸的碱金属盐 。
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公开(公告)号：US10894191B2
公开(公告)日：2021-01-19
申请号：US15795732
申请日：2017-10-27
Applicant: Dunlop Sports Co. Ltd.
Inventor： Ryota Sakamine , Kazuyoshi Shiga , Hikaru Nagakura , Takahiro Shigemitsu
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.
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公开(公告)号：US10195489B2
公开(公告)日：2019-02-05
申请号：US13906564
申请日：2013-05-31
Applicant: Dunlop Sports Co., Ltd.
Inventor： Kazuhiko Isogawa , Kosuke Tachibana , Takahiro Shigemitsu
IPC: A63B37/00
Abstract: The present invention provides a golf ball comprising a spherical core composed of a spherical inner core layer and an outer core layer, an intermediate layer and a cover, wherein the inner core layer has a hardness difference (Hs1−Ho) between a surface hardness (Hs1) and a center hardness (Ho) of 5 or less in JIS-C hardness, the outer core is such that R2 of a linearly approximated curve obtained from a least square method is 0.95 or higher, when JIS-C hardness, measured at nine points obtained by dividing a thickness of the outer core in a radius direction of the spherical core into equal parts having 12.5% intervals therebetween, is plotted against distance (%) from a border point between the outer core layer and the inner core layer, and the intermediate layer has a slab hardness which is greater than a slab hardness of the cover.
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公开(公告)号：US09598522B2
公开(公告)日：2017-03-21
申请号：US14582752
申请日：2014-12-24
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Kazuyoshi Shiga , Masanori Taguchi , Takahiro Shigemitsu
IPC: A63B37/00 , C08F8/44 , C08F8/46 , C08F279/02 , C08L51/04 , C08L23/08 , C08F290/04 , C08L13/00
CPC classification number: C08F279/02 , A63B37/0003 , A63B37/0007 , A63B37/0018 , A63B37/0022 , A63B37/0023 , A63B37/0024 , A63B37/0031 , A63B37/0039 , A63B37/0051 , A63B37/0059 , A63B37/0074 , A63B37/0075 , A63B37/0076 , A63B37/0078 , C08F8/44 , C08F8/46 , C08F290/048 , C08L13/00 , C08L23/0876 , C08L51/04
Abstract: The present invention provides resin compositions for golf balls which have excellent flexibility, fluidity, and resilience, and golf balls formed from the resin compositions. The present invention relates to a resin composition for golf balls including a polymer that contains a diene polymer moiety and a carboxylic acid-based moiety wherein carboxyl groups derived from the carboxylic acid-based moiety are neutralized.
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公开(公告)号：US09345932B2
公开(公告)日：2016-05-24
申请号：US13727874
申请日：2012-12-27
Applicant: Dunlop Sports Co., Ltd.
Inventor： Takahiro Shigemitsu
CPC classification number: A63B37/0059 , A63B37/0043 , A63B37/0045 , A63B37/0051 , A63B37/0054 , A63B37/006 , A63B37/0062 , A63B37/0064 , A63B37/0075 , A63B37/0076 , C08F22/02 , C08K5/098
Abstract: A multi-piece golf ball includes a core composed of a center, an envelope layer and at least one cover. The center is formed from a composition containing at least one resin component and a basic metal salt of a fatty acid. The resin component is selected from a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid, an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid, a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid ester, and an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid and an α,β-unsaturated carboxylic acid ester. The envelope layer is formed from a composition containing a thermoplastic resin and/or a thermoplastic elastomer as a resin component.
Abstract translation: 多件高尔夫球包括由中心，包层和至少一个盖组成的芯。 中心由含有至少一种树脂组分和脂肪酸的碱金属盐的组合物形成。 树脂组分选自由烯烃和α，β-不饱和羧酸组成的二元共聚物，由烯烃和α，α-烯烃组成的二元共聚物的金属离子中和产物组成的离聚物树脂， 不饱和羧酸，由烯烃，α，β-不饱和羧酸和α，β-不饱和羧酸酯组成的三元共聚物和由三元共聚物的金属离子中和产物组成的离聚物树脂，其组成 的烯烃，α，β-不饱和羧酸和α，β-不饱和羧酸酯。 包层由含有热塑性树脂和/或热塑性弹性体作为树脂成分的组合物形成。
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Patent Agency Ranking
公开(公告)号：US08721473B2
公开(公告)日：2014-05-13
申请号：US13947615
申请日：2013-07-22
Applicant: Dunlop Sports Co. Ltd.
Inventor： Kazuhiko Isogawa , Tsutomu Hirau , Hirotaka Nakamura , Takahiro Shigemitsu
IPC: A63B37/06
CPC classification number: A63B37/0039 , A63B37/0031 , A63B37/0033 , A63B37/0035 , A63B37/0043 , A63B37/0045 , A63B37/0047 , A63B37/0062 , A63B37/0064 , A63B37/0066 , A63B37/0091 , A63B37/0092
Abstract: A first golf ball 2 includes a core 4, a mid-layer 6, and a cover 8. The core 4 includes a center 10 and an envelope layer 12. The mid-layer 6 includes a metal ion source (C) that can neutralize an ionomer resin. The mid-layer 6 has a melt flow rate (at 190° C. and 2.16 kg) of 4 g/10 minute or greater. The difference (H3−H1) between the JIS-C hardness H3 of the cover 8 and the JIS-C central hardness H1 of the center 10 is equal to or greater than 45. A second golf ball 22 includes a core 24, a mid-layer 28, and a cover 30. The mid-layer 28 has a melt flow rate (at 190° C. and 2.16 kg) of 4 g/10 minute or greater. Preferably, the mid-layer 28 includes a high melt viscosity resin (A), a low melt viscosity ionomer resin (B), and a metal ion source (C1).
Abstract translation: 第一高尔夫球2包括芯4，中间层6和盖8.芯4包括中心10和包层12.中间层6包括可以中和的金属离子源（C） 离聚物树脂。 中间层6具有4g / 10分钟或更高的熔体流动速率（190℃和2.16kg）。 盖8的JIS-C硬度H3与中心部10的JIS-C中央硬度H1之间的差（H3-H1）等于或大于45.第二高尔夫球22包括芯24， 层28和盖30.中间层28的熔体流动速率（在190℃和2.16kg）为4g / 10分钟或更大。 优选地，中间层28包括高熔体粘度树脂（A），低熔融粘度离聚物树脂（B）和金属离子源（C1）。
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公开(公告)号：US10427009B2
公开(公告)日：2019-10-01
申请号：US14979079
申请日：2015-12-22
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Takahiro Shigemitsu , Hidetaka Inoue , Seiji Hayase
Abstract: An object of the present invention is to provide a golf ball showing a small ratio of a spin rate on driver shots to a spin rate on approach shots. The present invention provides a multi-piece golf ball comprising a spherical center, three or more envelope layers covering the spherical center, and a cover covering the envelope layers, wherein adjacent two envelope layers are formed so as to include a region composed of elements having a hitting deformation ratio of 30% or more, the hitting deformation ratio being obtained by analyzing a specified golf ball model by a finite element method; and the envelope layer which is radially outwardly positioned of the adjacent two envelope layers has a lowest hardness among all the envelope layers.
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公开(公告)号：US10086236B2
公开(公告)日：2018-10-02
申请号：US15196980
申请日：2016-06-29
Applicant: Dunlop Sports Co., Ltd.
Inventor： Kazuyoshi Shiga , Hiroshi Tadaoka , Masanori Taguchi , Takahiro Shigemitsu
Abstract: An object of the present invention is to provide a golf ball resin composition having high resilience and flexibility. The present invention provides a golf ball resin composition, comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer, (a-3) a ternary copolymer, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer, (B) a saturated fatty acid, (C) an unsaturated fatty acid, and (D) an unsaturated aliphatic polycarboxylic acid; comprising (B) the saturated fatty acid, (C) the unsaturated fatty acid and (D) the unsaturated aliphatic polycarboxylic acid in a total amount ranging from 80 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component; and having a neutralization degree of more than 80 mole %.
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公开(公告)号：US10040929B2
公开(公告)日：2018-08-07
申请号：US15230099
申请日：2016-08-05
Applicant: Dunlop Sports Co. Ltd.
Inventor： Kazuyoshi Shiga , Hiroshi Tadaoka , Masanori Taguchi , Takahiro Shigemitsu
Abstract: An object of the present invention is to provide a golf ball resin composition having high resilience and flexibility. The present invention provides a golf ball resin composition, comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer, (a-3) a ternary copolymer, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer, (B) a saturated fatty acid, (C) an unsaturated fatty acid, and (D) a carboxyl group modified diene polymer having at least two carboxyl groups and/or an anhydride of the carboxyl groups; and having a neutralization degree of more than 80 mole %, wherein a total amount of (B) the saturated fatty acid, (C) the unsaturated fatty acid and (D) the carboxyl group modified diene polymer ranges from 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component.
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公开(公告)号：US09987522B2
公开(公告)日：2018-06-05
申请号：US14981442
申请日：2015-12-28
Applicant: Dunlop Sports Co. Ltd.
Inventor： Kazuyoshi Shiga , Hiroshi Tadaoka , Masanori Taguchi , Takahiro Shigemitsu
CPC classification number: A63B37/0003 , A63B37/0038 , C08K3/22 , C08K5/09 , C08K2003/2224 , C08L23/0876 , C08L23/0869 , C08K5/19 , C08K5/175
Abstract: An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in rebound resilience and shot feeling. The present invention provides a golf ball resin composition comprising: (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) a binary ionomer resin, (a-3) a ternary copolymer, and (a-4) a ternary ionomer resin, (B) a saturated fatty acid, and (C) an unsaturated fatty acid, wherein a total content of (B) the saturated fatty acid and (C) the unsaturated fatty acid ranges from 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component.
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