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公开(公告)号：US09346898B2
公开(公告)日：2016-05-24
申请号：US13727862
申请日：2012-12-27
Applicant: Dunlop Sports Co. Ltd.
Inventor： Kazuyoshi Shiga , Ryo Murakami , Takahiro Shigemitsu
CPC classification number: C08F20/04 , A63B37/0051 , A63B37/0054 , A63B37/0059 , A63B37/006 , A63B37/0073 , C08K5/098 , C08L23/0876 , C08L2205/025 , C08L2205/035
Abstract: An object of the present invention is to provide a golf ball resin composition excellent in shot feeling and resilience. The golf ball resin composition 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 the binary copolymer components, (a-3) a ternary copolymer composed of the binary copolymer components and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of the ternary copolymer components; and (B) a basic metal salt of a fatty acid, and having a storage modulus E′ (Pa) and a loss modulus E″ (Pa) satisfying a following expression; log(E′/E″2)≧−5.84 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.
Abstract translation: 本发明的目的在于提供一种拍摄感和弹性优异的高尔夫球树脂组合物。 高岭球树脂组合物包含（A）至少一种选自（a-1）由烯烃和碳原子数3〜8的α，β-不饱和羧酸组成的二元共聚物的树脂成分（ a-2）由二元共聚物组分的金属离子中和产物（a-3）组成的离聚物树脂，由二元共聚物组分和α，β-不饱和羧酸酯组成的三元共聚物和（a- -4）由三元共聚物组分的金属离子中和产物组成的离聚物树脂; 和（B）脂肪酸的碱性金属盐，并且具有满足下式的储能模量E'（Pa）和损耗模量E“（Pa） log（E'/ E“2）≧-5.84当使用动态粘弹性测量装置在拉伸模式下测量时。
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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：US08961331B2
公开(公告)日：2015-02-24
申请号：US13905191
申请日：2013-05-30
Applicant: Dunlop Sports Co. Ltd.
Inventor： Kazuyoshi Shiga , Yasuo Naito
CPC classification number: A63B53/10 , A63B60/42 , A63B60/54 , A63B2209/023 , A63B2209/026 , A63B2225/02
Abstract: A shaft 6 has a plurality of full length layers s2, s3, and s6 to s9. The full length layers have full length bias layers s2 and s3, and full length straight layers s6, s8, and s9. The full length straight layers s6, s8, s9 located outside the full length bias layers s2 and s3 include a novolac-containing layer. In the novolac-containing layer, a content Rn of the novolac type epoxy resin is 3% by mass or greater and 19% by mass or less. If an average specific gravity of the novolac-containing layers constituting the full length straight layers is defined as S1, and an average specific gravity of the full length bias layers and inside of the full length bias layers is defined as S2, the specific gravity S1 is greater than the specific gravity S2.
Abstract translation: 轴6具有多个全长层s2，s3，s6〜s9。 全长层具有全长偏压层s2和s3，以及全长直层s6，s8和s9。 位于全长偏压层s2和s3外的全长直层s6，s8，s9包括含酚醛清漆层。 在含酚醛清漆层中，酚醛清漆型环氧树脂的含量Rn为3质量％以上且19质量％以下。 如果将构成全长直线层的含酚醛清漆层的平均比重定义为S1，将全长偏置层和全长偏置层内部的平均比重定义为S2，则比重S1 大于比重S2。
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公开(公告)号：US08858358B2
公开(公告)日：2014-10-14
申请号：US13729327
申请日：2012-12-28
Applicant: Dunlop Sports Co., Ltd.
Inventor： Kazuyoshi Shiga , Yasuo Naito
IPC: A63B53/10
CPC classification number: A63B53/10 , A01K87/00 , A63B49/10 , A63B2209/02 , B29L2023/22 , B29L2031/5227 , C08J5/042 , C08J5/24 , C08J2363/02 , C08J2363/04 , C08J2429/14 , Y10T428/1369 , Y10T428/139 , Y10T428/1397
Abstract: It is an object to provide a tubular body made from a novel fiber-reinforced epoxy resin material having improved strength. A tubular body made of a fiber-reinforced epoxy resin material according to the present invention is a tubular body made of a fiber-reinforced epoxy resin material comprising a cured product of an epoxy resin composition and a reinforcing fiber. The cured product of the epoxy resin composition has a swelling ratio of 20% by mass to 42.5% by mass in methyl ethyl ketone.
Abstract translation: 本发明的目的是提供一种由具有改进的强度的新型纤维增强环氧树脂材料制成的管状体。 根据本发明的由纤维增强环氧树脂材料制成的管状体是由包含环氧树脂组合物和增强纤维的固化产物的纤维增强环氧树脂材料制成的管状体。 环氧树脂组合物的固化物在甲基乙基酮中的溶胀比为20质量％〜42.5质量％。
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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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Patent Agency Ranking
公开(公告)号：US10293215B2
公开(公告)日：2019-05-21
申请号：US15851135
申请日：2017-12-21
Applicant: Dunlop Sports Co. Ltd. , Sumitomo Rubber Industries, Ltd.
Inventor： Hiroshi Tadaoka , Kazuyoshi Shiga
IPC: C08L9/00 , C08J3/24 , C08K5/098 , A63B37/02 , A63B37/00 , C08K5/00 , C07F3/00 , C08L7/00 , C07F3/06 , A63B39/00 , A63B102/02
Abstract: An object of the present invention is to provide a rubber composition from which a crosslinked rubber molded product excellent in the resilience performance can be obtained. The present invention provides a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent and (c) a crosslinking initiator, wherein (b) the co-crosslinking agent contains a complex represented by a general formula (1). [In the formula (1), M is a metal atom, and L is a carboxylate represented by the general formula (2). In the formula (2), R is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms or an alkynyl group having 2 to 18 carbon atoms, and the dotted line shows a resonance structure. In the formula (1), a plurality of R may be identical to or different from each other, and at least one of R is the alkenyl group having 2 to 18 carbon atoms or the alkynyl group having 2 to 18 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：US10195488B2
公开(公告)日：2019-02-05
申请号：US15179233
申请日：2016-06-10
Applicant: Dunlop Sports Co. Ltd.
Inventor： Kazuyoshi Shiga , Hiroshi Tadaoka , Masanori Taguchi , Takahiro Shigemitsu
IPC: A63B37/04 , A63B37/06 , A63B37/00 , C08K5/09 , C08K5/19 , C08K3/22 , C08K3/04 , C08K5/098 , C08K5/20
Abstract: An object of the present invention is to provide a golf ball resin composition having a high resilience, flexibility and high fluidity. The present invention provides a golf ball resin composition having a bending stiffness (M21-30) ranging from 600 kgf/cm2 to 5,000 kgf/cm2 within a bending angle from 21° to 30°, a rebound resilience (R) of 50% or more, a slab hardness (Shore D) ranging from 40 to 65, a melt flow rate (190° C., 2.16 kgf) of 1.0 g/10 min or more, and a resilience index value ((M21-30)0.5×(R/100)3) of 8.5 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.
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公开(公告)号：US10143894B2
公开(公告)日：2018-12-04
申请号：US15620000
申请日：2017-06-12
Applicant: Dunlop Sports Co. Ltd.
Inventor： Hikaru Nagakura , Kazuyoshi Shiga , Chiemi Mikura , Takahiro Shigemitsu
Abstract: An object of the present invention is to provide a golf ball having excellent flying performance on driver shots. The present invention provides a golf ball having 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, (d) an unsaturated fatty acid and/or a metal salt thereof (excluding an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof), and (e) a saturated fatty acid and/or a metal salt thereof, 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.
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