Golf ball resin composition and golf ball

Patent metadata

Field	Value
Publication number	US-2016184641-A1
Application number	US-201514981442-A
Country	US
Kind code	A1
Filing date	Dec 28, 2015
Priority date	Dec 26, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in rebound resilience and shot feeling. The present invention provides a golf ball resin composition comprising: (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) a binary ionomer resin, (a-3) a ternary copolymer, and (a-4) a ternary ionomer resin, (B) a saturated fatty acid, and (C) an unsaturated fatty acid, wherein a total content of (B) the saturated fatty acid and (C) the unsaturated fatty acid ranges from 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component.

First claim

1 . A golf ball resin composition comprising: (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an β,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an β,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, (B) a saturated fatty acid, and (C) an unsaturated fatty acid,
wherein a total content of (B) the saturated fatty acid and (C) the unsaturated fatty acid ranges from 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component.

2 . The golf ball resin composition according to claim 1 , wherein (B) the saturated fatty acid is a linear saturated fatty acid having 16 to 30 carbon atoms.

3 . The golf ball resin composition according to claim 1 , wherein (B) the saturated fatty acid includes at least one selected from the group consisting of palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, and montanic acid.

4 . The golf ball resin composition according to claim 1 , wherein (C) the unsaturated fatty acid is a linear unsaturated fatty acid having 12 to 30 carbon atoms.

5 . The golf ball resin composition according to claim 1 , wherein (C) the unsaturated fatty acid includes at least one selected from the group consisting of palmitoleic acid, oleic acid, linoleic acid, and arachidonic acid.

6 . The golf ball resin composition according to claim 1 , wherein a mass ratio (B)/(C) of (B) the saturated fatty acid to (C) the unsaturated fatty acid ranges from 10/90 to 90/10.

7 . The golf ball resin composition according to claim 1 , wherein the golf ball resin composition further comprises (D) an amphoteric surfactant.

8 . The golf ball resin composition according to claim 7 , wherein (D) the amphoteric surfactant includes at least one selected from the group consisting of a betaine type amphoteric surfactant, an amidoamino acid type amphoteric surfactant, an alkylamino fatty acid salt type amphoteric surfactant, an alkylamine oxide type amphoteric surfactant, a μ-alanine type amphoteric surfactant, a glycine type amphoteric surfactant, a sulfobetaine type amphoteric surfactant, and a phosphobetaine type amphoteric surfactant.

9 . The golf ball resin composition according to claim 7 , wherein a content of (D) the amphoteric surfactant ranges from 1 part by mass to 20 parts by mass with respect to 100 parts by mass of (A) the resin component.

10 . The golf ball resin composition according to claim 1 , wherein the golf ball resin composition further comprises (E) a metal compound.

11 . The golf ball resin composition according to claim 1 , wherein the golf ball resin composition has a slab hardness ranging from 20 to 80 in Shore D hardness.

12 . The golf ball resin composition according to claim 1 , wherein a total degree of neutralization of acid groups in the resin composition is more than 80 mole %.

13 . A golf ball comprising a constituent member formed from a golf ball resin composition, wherein the golf ball resin composition comprises: (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an α,β-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and an β,β-unsaturated carboxylic acid ester, (B) a saturated fatty acid, and (C) an unsaturated fatty acid, and
a total content of (B) the saturated fatty acid and (C) the unsaturated fatty acid ranges from 100 parts by mass to 200 parts by mass with respect to 100 parts by mass of (A) the resin component.

14 . The golf ball according to claim 13 , wherein (B) the saturated fatty acid is a linear saturated fatty acid having 16 to 30 carbon atoms.

15 . The golf ball according to claim 13 , wherein (B) the saturated fatty acid includes at least one selected from the group consisting of palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, and montanic acid.

16 . The golf ball according to claim 13 , wherein (C) the unsaturated fatty acid is a linear unsaturated fatty acid having 12 to 30 carbon atoms.

17 . The golf ball according to claim 13 , wherein (C) the unsaturated fatty acid includes at least one selected from the group consisting of palmitoleic acid, oleic acid, linoleic acid, and arachidonic acid.

18 . The golf ball according to claim 13 , wherein a mass ratio (B)/(C) of (B) the saturated fatty acid to (C) the unsaturated fatty acid ranges from 10/90 to 90/10.

19 . The golf ball according to claim 13 , wherein the golf ball resin composition further comprises (D) an amphoteric surfactant.

20 . The golf ball according to claim 19 , wherein (D) the amphoteric surfactant includes at least one selected from the group consisting of a betaine type amphoteric surfactant, an amidoamino acid type amphoteric surfactant, an alkylamino fatty acid salt type amphoteric surfactant, an alkylamine oxide type amphoteric surfactant, a β-alanine type amphoteric surfactant, a glycine type amphoteric surfactant, a sulfobetaine type amphoteric surfactant, and a phosphobetaine type amphoteric surfactant.

21 . The golf ball according to claim 19 , wherein a content of (D) the amphoteric surfactant ranges from 1 part by mass to 20 parts by mass with respect to 100 parts by mass of (A) the resin component.

22 . The golf ball according to claim 13 , wherein the golf ball resin composition further comprises (E) a metal compound.

23 . The golf ball according to claim 13 , wherein the golf ball resin composition has a slab hardness ranging from 20 to 80 in Shore D hardness.

24 . The golf ball according to claim 13 , wherein a total degree of neutralization of acid groups in the resin composition is more than 80 mole %.

Assignees

• Dunlop Sports Co Ltd
• Dunlop Sports Co Ltd

Inventors

• Shiga Kazuyoshi
• Tadaoka Hiroshi
• Taguchi Masanori
• Shigemitsu Takahiro

Classifications

• C08K5/09

  Carboxylic acids; Metal salts thereof; Anhydrides thereof · CPC title

• A63B37/0003 Primary

  Golf balls · CPC title

• A63B37/0038

  Intermediate layers, e.g. inner cover, outer core, mantle · CPC title

• A63B37/0031

  Hardness · CPC title

• A63B37/0087

  Deflection or compression · CPC title