公开(公告)号：US20180178079A1

公开(公告)日：2018-06-28

申请号：US15851107

申请日：2017-12-21

Applicant: Dunlop Sports Co. Ltd. ,  Sumitomo Rubber Industries, Ltd.

Inventor： Hiroshi TADAOKA ,  Kazuyoshi SHIGA

IPC: A63B37/00 ,  C08K3/22 ,  C08K5/098 ,  C08L21/00 ,  C08L9/00

CPC classification number: A63B37/0059 ,  C08K3/22 ,  C08K5/098 ,  C08K2003/2206 ,  C08K2003/2217 ,  C08K2003/2296 ,  C08L9/00 ,  C08L21/00

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). ((RCOO)8M5(OH)2)n   (1) [In the formula (1), M is a metal atom, 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 n is an integer of 1 or more. A plurality of R and M may be identical to or different from each other. 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.]

公开(公告)号：US20180117421A1

公开(公告)日：2018-05-03

申请号：US15782577

申请日：2017-10-12

Applicant: Dunlop Sports Co. Ltd.

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

IPC: A63B37/00 ,  C08K5/09

CPC classification number: A63B37/0074 ,  A63B37/003 ,  A63B37/0031 ,  A63B37/0051 ,  A63B37/0063 ,  A63B37/0096 ,  C08K5/0025 ,  C08K5/09 ,  C08K5/098 ,  C08K5/14 ,  C08K2201/014 ,  C08L9/00

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.

公开(公告)号：US20180001153A1

公开(公告)日：2018-01-04

申请号：US15620000

申请日：2017-06-12

Applicant: Dunlop Sports Co. Ltd.

Inventor： Hikaru NAGAKURA ,  Kazuyoshi SHIGA ,  Chiemi MIKURA ,  Takahiro SHIGEMITSU

IPC: A63B37/00

CPC classification number: A63B37/0063 ,  A63B37/0051 ,  A63B37/0074 ,  A63B37/0077 ,  C08L21/00

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.

公开(公告)号：US20170340924A1

公开(公告)日：2017-11-30

申请号：US15608684

申请日：2017-05-30

Applicant: Dunlop Sports Co. Ltd.

Inventor： Ayaka SHINDO ,  Hiroshi TADAOKA ,  Chiemi MIKURA ,  Kazuyoshi SHIGA

IPC: A63B37/00 ,  C08K5/098 ,  C08L9/00

CPC classification number: A63B37/0031 ,  A63B37/0051 ,  A63B37/0063 ,  A63B37/0074 ,  C08K5/09 ,  C08K5/098 ,  C08K5/14 ,  C08L9/00

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.

公开(公告)号：US20170182386A1

公开(公告)日：2017-06-29

申请号：US15389971

申请日：2016-12-23

Applicant: Dunlop Sports Co. Ltd.

Inventor： Hidetaka INOUE ,  Sho GOJI ,  Kuniyasu HORIUCHI ,  Kazuyoshi SHIGA ,  Chiemi MIKURA ,  Hitoshi OYAMA ,  Toshiyuki TARAO ,  Hiroshi HASEGAWA

IPC: A63B53/14 ,  C08L9/02 ,  C08L7/00

CPC classification number: A63B53/14 ,  C08K3/04 ,  C08K3/06 ,  C08K3/22 ,  C08K5/09 ,  C08K5/14 ,  C08K5/39 ,  C08K5/40 ,  C08L7/00 ,  C08L9/02 ,  C08L13/00 ,  C08L15/005 ,  C08L23/0853 ,  C08L45/02 ,  C08L93/04

Abstract: An object of the present invention is to provide a grip for sporting goods containing an acrylonitrile-butadiene based rubber as a base rubber and having an excellent grip performance and sustainability of grip performance under a wet condition. The present invention provides a grip for sporting goods comprising an outermost surface layer formed from a surface layer rubber composition, wherein the surface layer rubber composition contains (A) a base rubber and (B) a resin having a softening point in a range from 5° C. to 120° C., (A) the base rubber contains an acrylonitrile-butadiene based rubber, and (B) the resin is at least one type selected from the group consisting of a hydrogenated rosin ester, a disproportionated rosin ester, an ethylene-vinyl acetate copolymer, a coumarone resin, a phenol resin, a xylene resin and a styrene resin.

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：US20170001078A1

公开(公告)日：2017-01-05

申请号：US15196980

申请日：2016-06-29

Applicant: Dunlop Sports Co. Ltd.

Inventor： Kazuyoshi SHIGA ,  Hiroshi TADAOKA ,  Masanori TAGUCHI ,  Takahiro SHIGEMITSU

IPC: A63B37/00 ,  C08K5/092 ,  C08K3/22 ,  C08K5/09 ,  C08K5/19

CPC classification number: A63B37/0039 ,  C08K3/22 ,  C08K5/09 ,  C08K5/092 ,  C08K5/19 ,  C08K5/20 ,  C08K2003/2224 ,  C08K2201/014 ,  C08L23/0869

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 %.

Abstract translation: 本发明的目的是提供一种具有高弹性和柔韧性的高尔夫球树脂组合物。 本发明提供一种高尔夫球树脂组合物，其包含（A）至少一种选自（a-1）二元共聚物，（a-2）由金属离子中和产物 二元共聚物（a-3）三元共聚物和（a-4）由三元共聚物的金属离子中和产物组成的离聚物树脂，（B）饱和脂肪酸，（C）不饱和脂肪酸 酸和（D）不饱和脂肪族多元羧酸; 相对于100质量份的（A）的（B）饱和脂肪酸，（C）不饱和脂肪酸和（D）不饱和脂肪族多元羧酸，其总量为80质量份〜200质量份 ）树脂组分; 并且具有大于80摩尔％的中和度。

公开(公告)号：US20160367872A1

公开(公告)日：2016-12-22

申请号：US14902097

申请日：2014-06-06

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yasuo NAITO ,  Takehiko HYODO ,  Kazuyoshi SHIGA ,  Hiroshi HASEGAWA

IPC: A63B53/10 ,  C08J5/24 ,  C08L63/00

CPC classification number: A63B53/10 ,  A63B2209/023 ,  B29C70/202 ,  C08J5/24 ,  C08J2363/00 ,  C08J2363/02 ,  C08J2429/14 ,  C08J2463/00 ,  C08J2463/04 ,  C08J2463/08 ,  C08L63/00 ,  C08L2205/025 ,  C08L2205/03

Abstract: An object of the present invention is to provide a golf club shaft having excellent strength. The present invention provides a golf club shaft made of a fiber-reinforced epoxy resin material comprising a cured product of an epoxy resin composition and a reinforcing fiber, wherein the epoxy resin composition comprises at least one selected from the group consisting of a bisphenol A type epoxy resin, a bisphenol F type epoxy resin and a novolac type epoxy resin, and a tetraglycidyl type epoxy resin as an epoxy resin component, and the cured product of the epoxy resin composition has a swelling ratio in a range from 20 mass % to 44 mass % in methyl ethyl ketone.

Abstract translation: 本发明的目的是提供一种具有优异强度的高尔夫球棒杆。 本发明提供一种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高尔夫球杆杆，其中环氧树脂组合物包括选自双酚A型 环氧树脂，双酚F型环氧树脂和酚醛清漆型环氧树脂以及作为环氧树脂组分的四缩水甘油型环氧树脂，并且环氧树脂组合物的固化产物的溶胀比在20质量％至44的范围内 质量％在甲基乙基酮中。