公开(公告)号：US09884225B2

公开(公告)日：2018-02-06

申请号：US15067731

申请日：2016-03-11

Applicant: DUNLOP SPORTS CO., LTD.

Inventor： Hidetaka Inoue ,  Toshiyuki Tarao ,  Mami Tanaka

IPC: A63B37/00 ,  C08L77/02 ,  C08K5/098

CPC classification number: A63B37/0039 ,  A63B37/0024 ,  A63B37/0031 ,  A63B37/0033 ,  A63B37/0037 ,  A63B37/0043 ,  A63B37/0045 ,  A63B37/0049 ,  A63B37/0051 ,  A63B37/0062 ,  A63B37/0069 ,  A63B37/0075 ,  A63B37/0092 ,  C08K3/22 ,  C08K3/30 ,  C08K5/098 ,  C08K5/37 ,  C08K5/375 ,  C08K2003/2296 ,  C08K2003/3045 ,  C08L77/02 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/035 ,  C08L9/06 ,  C08L23/0846 ,  C08L23/0876 ,  C08L9/00 ,  C08L53/02 ,  C08L67/025

Abstract: An object of the present invention is to provide a material for obtaining a golf ball having excellent shot feeling and flight distance. The present invention provides a golf ball resin composition having a ratio (flexural elastic modulus/slab hardness) of a flexural elastic modulus (MPa) to a slab hardness (Shore D hardness) in a range from 3 to 5, and containing, as a resin component, (A) a polyamide resin, (B) at least one selected from the group consisting of (b-1) a binary copolymer, (b-2) a metal ion-neutralized product of a binary copolymer, (b-3) a ternary copolymer and (b-4) a metal ion-neutralized product of a ternary copolymer, and (C) a thermoplastic elastomer.

公开(公告)号：US09757621B2

公开(公告)日：2017-09-12

申请号：US15067414

申请日：2016-03-11

Applicant: Dunlop Sports Co. Ltd.

Inventor： Hidetaka Inoue ,  Toshiyuki Tarao ,  Mami Tanaka

IPC: A63B37/00 ,  C08K5/098 ,  C08L77/00

CPC classification number: A63B37/0039 ,  A63B37/0031 ,  A63B37/0037 ,  A63B37/004 ,  A63B37/0043 ,  A63B37/0045 ,  A63B37/0047 ,  A63B37/0049 ,  A63B37/0075 ,  A63B37/0076 ,  C08K3/22 ,  C08K3/30 ,  C08K5/098 ,  C08K5/14 ,  C08K5/375 ,  C08L77/00 ,  C08L77/02 ,  C08L9/00 ,  C08L23/0876

Abstract: An object of the present invention is to provide a golf ball having excellent shot feeling and flight distance. The present invention provides a golf ball comprising a spherical core, a first resin layer and a second resin layer, wherein the first resin layer is formed from a first resin composition containing (A) a polyamide resin, (B) a copolymer and/or a metal ion-neutralized product thereof, and (C) a thermoplastic elastomer, and having a ratio (flexural elastic modulus/slab hardness) of a flexural elastic modulus (MPa) to a slab hardness (Shore D hardness) in a range from 3 to 5; and the second resin layer is formed from a second resin composition containing (D) a polyamide resin, and (E) a copolymer and/or a metal ion-neutralized product thereof.