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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11167458 B1

PDFFull Text
Date of Patent:
Nov. 09, 2021

Filed:

Dec. 27, 2018

Method for producing golf ball

Applicant:

Sumitomo Rubber Industries, Ltd., Kobe, JP;

Inventors:

Ryota Sakamine, Kobe, JP;

Kazuyoshi Shiga, Kobe, JP;

Hikaru Nagakura, Kobe, JP;

Assignee:

SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP.

Primary Examiner:

Edmund H Lee

Int. Cl.
CPC ...
B29C 45/14 (2006.01); B29C 45/00 (2006.01); B29B 7/90 (2006.01); C08K 5/56 (2006.01); C08K 3/22 (2006.01); C08K 3/30 (2006.01); A63B 45/00 (2006.01); B29B 7/00 (2006.01); B29B 7/74 (2006.01); A63B 37/00 (2006.01); A63B 102/32 (2015.01); B29K 9/00 (2006.01); B29K 509/00 (2006.01); B29K 105/24 (2006.01); B29L 31/54 (2006.01); B29B 7/18 (2006.01); B29B 7/28 (2006.01);
U.S. Cl.
CPC ...
B29C 45/0001 (2013.01); A63B 45/00 (2013.01); B29B 7/005 (2013.01); B29B 7/7495 (2013.01); B29B 7/90 (2013.01); B29C 45/14819 (2013.01); C08K 3/22 (2013.01); C08K 3/30 (2013.01); C08K 5/56 (2013.01); A63B 37/0062 (2013.01); A63B 37/0064 (2013.01); A63B 37/0065 (2013.01); A63B 37/0074 (2013.01); A63B 37/0075 (2013.01); A63B 37/0076 (2013.01); A63B 2102/32 (2015.10); B29B 7/183 (2013.01); B29B 7/286 (2013.01); B29K 2009/00 (2013.01); B29K 2105/24 (2013.01); B29K 2509/00 (2013.01); B29L 2031/546 (2013.01); C08K 2003/2296 (2013.01); C08K 2003/3045 (2013.01);
Abstract

An object of the present invention is to provide a method for obtaining a golf ball having excellent impact durability. The present invention provides a method for producing a golf ball, comprising a first step of kneading (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinkable compound having two or more polymerizable unsaturated bonds in a molecule thereof, and (d) a crosslinking initiator to prepare a core rubber composition; a second step of producing the spherical core from the core rubber composition at a molding temperature in a range from 100° C. to 150° C.; and a third step of molding the at least one cover layer covering the spherical core on the spherical core.

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