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1. 发明授权

US11555089B2 Rotaxane and polyurethane using the same 有权
公开(公告)号：US11555089B2
公开(公告)日：2023-01-17
申请号：US16405791
申请日：2019-05-07
申请人： SUMITOMO RUBBER INDUSTRIES, LTD. , TOKYO INSTITUTE OF TECHNOLOGY
发明人： Toshiyuki Tarao , Mami Tanaka , Toshikazu Takata , Jun Sawada
IPC分类号： C08G18/28 , C08G18/12 , C08G18/73 , C07D323/00 , C08G18/71 , C08G18/38 , C08G18/48 , C08G18/66 , C08G18/10
摘要： An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.

2. 发明授权

US10894190B2 Golf ball 有权
公开(公告)号：US10894190B2
公开(公告)日：2021-01-19
申请号：US16436539
申请日：2019-06-10
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Mami Tanaka , Toshiyuki Tarao
IPC分类号： A63B37/00 , A63B37/12 , C08L25/04 , C08L23/08 , C08G83/00
摘要： An object of the present invention is to provide a golf ball exhibiting good shot feeling and excellent resilience. The present invention provides a golf ball comprising a spherical core and one or more cover layers disposed outside the spherical core, wherein at least one layer of the cover layers contains: (A) a base resin containing (a-1) an ionomer resin and having a material hardness of 59 or more in Shore D hardness; and (B) a polyrotaxane having a cyclodextrin with at least a part of hydroxyl groups of the cyclodextrin being modified with a caprolactone chain having a carboxyl group at a terminal of the caprolactone chain, a linear molecule piercing through a cyclic structure of the cyclodextrin, and blocking groups located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin.

3. 发明授权

US10751576B2 Golf ball 有权
公开(公告)号：US10751576B2
公开(公告)日：2020-08-25
申请号：US16653105
申请日：2019-10-15
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Toshiyuki Tarao , Mami Tanaka
IPC分类号： A63B37/06 , A63B37/00 , C08L9/00 , B29C43/00 , B29C45/14 , B29L31/54 , B29K9/00
摘要： An object of the present invention is to provide a golf ball having excellent shot feeling and durability. The present invention provides a golf ball comprising a constituent member containing a crosslinked rubber component and resin fine particles, wherein the resin fine particles contain a polyrotaxane component having a cyclodextrin, a linear molecule piercing through the cyclic structure of the cyclodextrin, and blocking groups located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin, wherein at least a part of hydroxyl groups of the cyclodextrin is modified with a caprolactone chain via a —O—C3H6—O— group.

4. 发明授权

US10525310B2 Golf ball 有权
公开(公告)号：US10525310B2
公开(公告)日：2020-01-07
申请号：US16155522
申请日：2018-10-09
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Mami Tanaka , Toshiyuki Tarao , Hidetaka Inoue
IPC分类号： A63B37/12 , A63B37/00 , A63B102/32
摘要： A golf ball 2 includes a main body 4 and a paint layer 6 positioned outside the main body 4. The paint layer 6 includes an inner layer 14 and an outer layer 16 positioned outside the inner layer 14. When an indentation depth (nm) is measured on a cross-section along a plane passing through a central point of the golf ball 2 when a force of 30 mgf is applied to the cross-section in a direction perpendicular to the cross-section, an indentation depth Di on a cross-section of the inner layer 14 is smaller than an indentation depth Do on a cross-section of the outer layer 16. A thickness To of the outer layer 16 is smaller than a thickness Ti of the inner layer 14.

5. 发明授权

US11173348B2 Golf ball 有权
公开(公告)号：US11173348B2
公开(公告)日：2021-11-16
申请号：US16203093
申请日：2018-11-28
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Toshiyuki Tarao , Mami Tanaka , Hidetaka Inoue
IPC分类号： A63B37/06 , A63B37/00 , C09D175/04 , C08G18/48 , C08G83/00 , C08G18/79 , C08G18/64
摘要： An object of the present invention is to provide a golf ball having enhanced controllability on approach shots from the rough and excellent stain resistance and shot feeling. The present invention provides a golf ball comprising a golf ball body having a cover, and a paint film covering the golf ball body, wherein a 10% elastic modulus of the paint film is 75 kgf/cm2 or less, a storage modulus (E′150) at 150° C. of the paint film obtained by measuring dynamic viscoelasticity of the paint film is 1.0×107 Pa or more, an indentation depth of the paint film measured under a specific measuring condition in a state that the paint film is formed on the surface of the golf ball body is 1250 nm or more, and a material hardness of the cover is less than 50 in Shore D hardness.

6. 发明授权

US10987547B2 Golf ball 有权
公开(公告)号：US10987547B2
公开(公告)日：2021-04-27
申请号：US16365295
申请日：2019-03-26
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Mami Tanaka , Toshiyuki Tarao
IPC分类号： A63B37/12 , C08G18/66 , C08G18/48 , A63B37/00 , C08G18/40 , C08G83/00 , C08L75/00 , C08G18/64 , C08G18/75 , C08G18/76 , C08G18/32 , C08G18/42
摘要： An object of the present invention is to provide a golf ball having excellent abrasion resistance and spin performance on driver shots. The present invention provides a golf ball having a spherical core and a cover covering the spherical core, wherein the cover contains a polyurethane, wherein the polyurethane comprises, as a constituent component, (A) a polyisocyanate component and (B) a polyol component containing (b1) a polyrotaxane, and wherein (b1) the polyrotaxane has a cyclodextrin, a linear molecule piercing through the cyclic structure of the cyclodextrin, and a blocking group located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin, and at least a part of hydroxyl groups of the cyclodextrin is modified with a caprolactone chain via —O—C3H6—O— group.

7. 发明授权

US11173349B2 Golf ball 有权
公开(公告)号：US11173349B2
公开(公告)日：2021-11-16
申请号：US16203192
申请日：2018-11-28
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Toshiyuki Tarao , Mami Tanaka , Hidetaka Inoue
IPC分类号： A63B37/06 , A63B37/00 , C09D175/04 , C08G18/79 , C08G18/62 , C08G18/40 , C08G18/72 , C08G18/24 , C08G18/42 , C08G18/64 , C08G18/78
摘要： An object of the present invention is to provide a golf ball travelling a great flight distance on driver shots, having enhanced controllability on approach shots under a wet condition, and being excellent in stain resistance and shot feeling. The present invention provides a golf ball comprising a golf ball body having a cover, and a paint film covering the golf ball body, wherein a 10% elastic modulus of the paint film is 75 kgf/cm2 or less, a storage modulus (E′150) at 150° C. of the paint film obtained by measuring dynamic viscoelasticity of the paint film is 1.0×107 Pa or more, an indentation depth of the paint film measured with a nanoindenter in a state that the paint film is formed on the surface of the golf ball body is 1250 nm or more, and a material hardness of the cover is 50 or more in Shore D hardness.

8. 发明授权

US10702747B2 Golf ball 有权
公开(公告)号：US10702747B2
公开(公告)日：2020-07-07
申请号：US16653382
申请日：2019-10-15
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Toshiyuki Tarao , Mami Tanaka
IPC分类号： A63B37/06 , A63B37/00 , C08L33/10 , C08L29/04
摘要： A golf ball strikes a good balance between the durability and the shot feeling, and includes a spherical core and at least one cover disposed outside the spherical core. At least one layer of the cover contains (A) a base resin and (B) a resin fine particle, (A) the base resin contains an ionomer resin, and (B) the resin fine particles contain a polyrotaxane component having a cyclodextrin, a linear molecule penetrating the cyclic structure of the cyclodextrin in a skewering manner, and blocking groups located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin wherein at least a part of hydroxyl groups of the cyclodextrin is modified with a caprolactone chain via a —O—C3H6—O— group.

9. 发明授权

US10463920B2 Golf ball 有权
公开(公告)号：US10463920B2
公开(公告)日：2019-11-05
申请号：US16234274
申请日：2018-12-27
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Hidetaka Inoue , Kazuya Kamino , Toshiyuki Tarao , Mami Tanaka
IPC分类号： A63B37/00 , A63B102/32 , C08L75/04
摘要： An object of the present invention is to provide a golf ball that can strike a good balance in approach performance under a rough condition and a wet condition while maintaining a flight distance on driver shots. The present invention provides a golf ball comprising a golf ball body and a paint film formed on a surface of the golf ball body, wherein the golf ball body has a spherical core, an intermediate layer covering the spherical core, and a cover covering the intermediate layer, and the paint film has a multi-layered construction composed of two or more layers, wherein a 10% elastic modulus (Pi10) of an innermost layer of the paint film is greater than a 10% elastic modulus (Po10) of an outermost layer of the paint film and a 10% elastic modulus (C10) of a material constituting the cover, and a thickness (Ti) of the innermost layer of the paint film is greater than a thickness (To) of the outermost layer of the paint film, a 10% elastic modulus (M10) of a material constituting the intermediate layer is greater than the 10% elastic modulus (C10) of the material constituting the cover, and a difference (Po10−C10) between the 10% elastic modulus (Po10) of the outermost layer of the paint film and the 10% elastic modulus (C10) of the material constituting the cover is −4.0 kgf/cm2 or more and 50 kgf/cm2 or less, and a Shore D hardness (Hc) of the material constituting the cover is 40 or less.

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