Title:
ゴルフボール
Document Type and Number:
Japanese Patent JP6801449
Kind Code:
B2
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.
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Inventors:
Makoto Tanaka
Toshiyuki Tarao
Toshiyuki Tarao
Application Number:
JP2016253565A
Publication Date:
December 16, 2020
Filing Date:
December 27, 2016
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
A63B37/00; C08L23/26; C08L71/00
Domestic Patent References:
| JP201693386A | ||||
| JP200799992A |
Foreign References:
| US20100029414 |
Attorney, Agent or Firm:
Osamu Futakuchi
Hideyuki Haratani
Hideyuki Haratani