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Multi-layer golf ball

  • US 9,782,633 B2
  • Filed: 08/06/2015
  • Issued: 10/10/2017
  • Est. Priority Date: 12/15/2005
  • Status: Active Grant
First Claim
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1. A golf ball comprising:

  • (a) an inner core layer formed from a first composition, the first composition having a Shore D hardness of 65 or less and comprising an ethylene/(meth)acrylic acid/alkyl (meth)acrylate copolymer wherein 40% to 100% of the acid groups of the acid copolymer are neutralized;

    (b) an outer core layer formed from a second composition, the second composition having a Shore D hardness of 35 or greater and comprising a highly neutralized ethylene/(meth)acrylic acid copolymer wherein from 40% to 100% of the acid groups of the acid copolymer are neutralized; and

    (c) a cover;

    wherein the Shore D hardness of the first composition is less than the Shore D hardness of the second composition.

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