Invention Grant
- Patent Title: Golf ball
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Application No.: US15592861Application Date: 2017-05-11
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Publication No.: US10293214B2Publication Date: 2019-05-21
- Inventor: Mami Tanaka , Toshiyuki Tarao
- Applicant: Dunlop Sports Co. Ltd.
- Applicant Address: JP Kobe-Shi, Hyogo
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe-Shi, Hyogo
- Agency: Birch, Stewart, Kolasch & Birch LLP
- Priority: JP2016-104567 20160525
- Main IPC: A63B37/12
- IPC: A63B37/12 ; C08G18/48 ; A63B37/00 ; C08G18/40 ; C08G83/00 ; C08L75/00 ; C08G18/64 ; C08G18/66 ; C08G18/75 ; C08G18/76 ; C08G18/32

Abstract:
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.
Public/Granted literature
- US20170340923A1 GOLF BALL Public/Granted day:2017-11-30
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