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    Resin composition for golf ball and golf ball
    23.
    发明授权
    Resin composition for golf ball and golf ball 有权
    高尔夫球和高尔夫球的树脂组合物

    公开(公告)号：US09371436B2

    公开(公告)日：2016-06-21

    申请号：US14465034

    申请日：2014-08-21

    Applicant: DUNLOP SPORTS CO. LTD.

    Inventor： Kazuyoshi Shiga ,  Yasuo Kubota ,  Takahiro Shigemitsu

    IPC: A63B37/00 ,  C08K5/09 ,  C08K5/17 ,  C08K5/19 ,  C08K3/22 ,  C08K5/521 ,  C08K5/20 ,  C08K5/32 ,  C08L23/08

    CPC classification number: C08K5/19 ,  A63B37/0039 ,  A63B37/0051 ,  A63B37/0059 ,  A63B37/0073 ,  A63B37/0074 ,  A63B37/0075 ,  A63B37/0076 ,  C08K3/22 ,  C08K5/09 ,  C08K5/175 ,  C08K5/20 ,  C08K5/32 ,  C08K5/42 ,  C08K5/521 ,  C08K2003/2224 ,  C08L23/08 ,  C08L23/0869

    Abstract: The present invention provides a resin composition for golf balls that is excellent in resilience, flexibility, and fluidity. The present invention also provides a golf ball excellent in resilience, shot feeling, and productivity. The present invention includes a resin composition for golf balls including: (A) at least one selected from the group consisting of (a-1) a bipolymer of an olefin and a C3-C8 α,β-unsaturated carboxylic acid, (a-2) a metal ion-neutralized product of a bipolymer of an olefin and a C3-C8 α,β-unsaturated carboxylic acid, (a-3) a terpolymer of an olefin, a C3-C8 α,β-unsaturated carboxylic acid, and an α,β-unsaturated carboxylic acid ester, and (a-4) a metal ion-neutralized product of a terpolymer of an olefin, a C3-C8 α,β-unsaturated carboxylic acid, and an α,β-unsaturated carboxylic acid ester; (B) a compound containing an unsaturated hydrocarbon chain, a cationic moiety, and an anionic moiety in its molecule; and (C) an unsaturated fatty acid.

    Abstract translation: 本发明提供一种弹性，柔韧性和流动性优异的高尔夫球用树脂组合物。 本发明还提供了弹性，拍摄感和生产率优异的高尔夫球。 本发明包括一种用于高尔夫球的树脂组合物，其包括：（A）至少一种选自（a-1）烯烃和C 3 -C 8α的二元共聚物，不饱和羧酸（a-1） -2）烯烃和C3-C8α，β-不饱和羧酸的共聚物的金属离子中和产物，（a-3）烯烃的三元共聚物，C3-C8α，不饱和的 羧酸和α，β-不饱和羧酸酯，和（a-4）烯烃，C3-C8α和不饱和羧酸的三元共聚物的金属离子中和产物和α 不饱和羧酸酯; （B）分子中含有不饱和烃链，阳离子部分和阴离子部分的化合物; 和（C）不饱和脂肪酸。

    Multi-piece golf ball
    24.
    发明授权
    Multi-piece golf ball 有权
    多件高尔夫球

    公开(公告)号：US09345933B2

    公开(公告)日：2016-05-24

    申请号：US13728523

    申请日：2012-12-27

    Applicant: DUNLOP SPORTS CO., LTD.

    Inventor： Takahiro Shigemitsu

    IPC: C08K5/098 ,  A63B37/00 ,  C08L23/08

    CPC classification number: A63B37/0076 ,  A63B37/0045 ,  A63B37/0051 ,  A63B37/0059 ,  A63B37/006 ,  A63B37/0062 ,  A63B37/0064 ,  A63B37/0075 ,  A63B37/0092 ,  C08K5/098 ,  C08L23/0876 ,  C08L9/00

    Abstract: A multi-piece golf ball excellent in resilience and controllability includes a core composed of a center and an envelope layer covering the center and at least one cover covering the core, wherein the center is formed from a center composition containing (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, (a-3) a ternary copolymer composed of the binary copolymer components and an β,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 wherein the envelope layer is formed from a rubber composition.

    Abstract translation: 优异的回弹性和可控性的多件式高尔夫球包括由中心和覆盖中心的包层和由覆盖芯部的至少一个覆盖层构成的芯，其中，中心由包含（A）至少一个 选自由（a-1）由烯烃和具有3-8个碳原子的α，β-不饱和羧酸组成的组分的（a-1）（a-2）由金属离子组成的离聚物树脂 - 二元共聚物的中和产物（a-3）由二元共聚物组分和一种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， 三元共聚物组分的中和产物和（B）脂肪酸的碱金属盐，并且其中包层由橡胶组合物形成。

    Golf ball resin composition and golf ball
    25.
    发明授权
    Golf ball resin composition and golf ball 有权

    公开(公告)号：US10676602B2

    公开(公告)日：2020-06-09

    申请号：US15812585

    申请日：2017-11-14

    Applicant: Dunlop Sports Co. Ltd.

    Inventor： Takahiro Shigemitsu

    IPC: C08L23/08 ,  C08L77/00 ,  C08K5/098 ,  A63B37/00 ,  C08L31/04 ,  C08L77/06 ,  C08L77/02

    Abstract: An object of the present invention is to provide a material from which a golf ball having excellent resilience and durability can be obtained. The present invention provides a golf ball resin composition containing: (A) at least one member selected from the group consisting of a polyamide, an ethylene-vinyl alcohol copolymer, a partially saponified product of an ethylene-vinyl acetate copolymer, and a polyvinyl alcohol, (B) at least one resin component selected from the group consisting of (b-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (b-2) 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, (b-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 (b-4) 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 (C) a fatty acid metal salt having 18 or less carbon atoms.

    Multi-piece golf ball
    26.
    发明授权
    Multi-piece golf ball 有权

    公开(公告)号：US10543402B2

    公开(公告)日：2020-01-28

    申请号：US14754288

    申请日：2015-06-29

    Applicant: DUNLOP SPORTS CO., LTD.

    Inventor： Takahiro Shigemitsu ,  Hidetaka Inoue

    IPC: A63B37/06 ,  A63B37/00

    Abstract: An object of the present invention is to provide a golf ball showing low spin rate on driver shots and high spin rate on approach shots. The present invention provides a multi-piece golf ball comprising a spherical center, at least two envelope layers covering the spherical center, and a cover covering the envelope layers, wherein the envelope layers comprise at least a first envelope layer covering the spherical center, and a second envelope layer covering the first envelope layer, a material hardness (H0) of the spherical center, a material hardness (H1) of the first envelope layer, and a material hardness (H2) of the second envelope layer satisfy an equation of H0>H1>H2, and the material hardness (H2) of the second envelope layer is lowest among the material hardness of the center constituent material and material hardness of envelope layer constituent materials.

    Golf ball
    27.
    发明授权
    Golf ball 有权

    公开(公告)号：US10213655B2

    公开(公告)日：2019-02-26

    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: A63B37/02 ,  A63B37/04 ,  A63B37/06 ,  A63B37/00 ,  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.

    Golf ball
    28.
    发明授权
    Golf ball 有权

    公开(公告)号：US10207155B2

    公开(公告)日：2019-02-19

    申请号：US14754156

    申请日：2015-06-29

    Applicant: Dunlop Sports Co., Ltd.

    Inventor： Takahiro Shigemitsu ,  Hidetaka Inoue

    IPC: A63B37/06 ,  A63B37/00

    Abstract: An object of the present invention is to provide a golf ball showing a low spin rate on driver shots and a high spin rate on approach shots. The present invention provides a golf ball comprising a spherical center, at least two envelope layers covering the spherical center, and a cover covering the envelope layers, wherein an envelope layer (Es1) formed from a material having a lowest material hardness among a center constituent material and envelope layers constituent materials, is disposed in a region located at a distance from 36.0% to 65.0% of a golf ball radius from a center point of the golf ball.

    Golf ball resin composition and golf ball
    29.
    发明授权
    Golf ball resin composition and golf ball 有权

    公开(公告)号：US10099089B2

    公开(公告)日：2018-10-16

    申请号：US15354464

    申请日：2016-11-17

    Applicant: Dunlop Sports Co., Ltd.

    Inventor： Kazuyoshi Shiga ,  Masanori Taguchi ,  Takahiro Shigemitsu ,  Shoichi Kutsumizu ,  Yohei Miwa

    IPC: C08K5/19 ,  C08K5/09 ,  A63B37/00 ,  C08F210/02 ,  C08K5/098 ,  C08K5/14

    Abstract: An object of the present invention is to provide a golf ball resin composition having an excellent rebound resilience. The present invention provides a golf ball resin composition containing an ionomer resin as a resin component. In a DSC measurement (a measuring atmosphere: a nitrogen atmosphere, a measuring temperature range: from −50° C. to 150° C., and a temperature rising rate: 10° C./min) of the golf ball resin composition of the first embodiment, a first endothermic peak and a second endothermic peak appear, and a peak top temperature (Ti) of the first endothermic peak is equal to or lower than a peak top temperature (Tm) of the second endothermic peak and the peak top temperature (Ti) ranges from 60° C. to 70° C.

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