Invention Application
- Patent Title: GOLF BALL
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Application No.: US15854122Application Date: 2017-12-26
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Publication No.: US20180178081A1Publication Date: 2018-06-28
- Inventor: Mami TANAKA , Toshiyuki TARAO
- Applicant: Dunlop Sports Co. Ltd.
- Applicant Address: JP Kobe-shi
- Assignee: Dunlop Sports Co. Ltd.
- Current Assignee: Dunlop Sports Co. Ltd.
- Current Assignee Address: JP Kobe-shi
- Priority: JP2016-253565 20161227
- Main IPC: A63B37/00
- IPC: A63B37/00

Abstract:
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 via —O—C3H6—O— group, 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.
Public/Granted literature
- US10376745B2 Golf ball Public/Granted day:2019-08-13
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