Multi-layer core golf ball
First Claim
Patent Images
1. A golf ball comprising:
- an inner core layer having a diameter of from 0.500 inches to 1.580 inches and formed from a first thermoset rubber composition;
at least one outer core layer having a thickness of from 0.005 inches to 0.300 inches and a surface hardness of from 50 Shore C to 90 Shore C and formed from a highly neutralized polymer composition, wherein the highly neutralized polymer composition comprises;
an acid copolymer of ethylene and an α
,β
-unsaturated carboxylic acid;
a non-acid polymer selected from ethylene-alkyl acrylates and ethylene-alkyl methacrylates and present in an amount of greater than 50 wt %, based on the combined weight of the acid copolymer and the non-acid polymer;
an organic acid or salt thereof; and
a cation source present in an amount sufficient to neutralize greater than 80% of all acid groups present in the composition; and
a cover.
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Abstract
Golf balls comprising a multi-layer core and a cover are disclosed. The multi-layer core comprises a layer formed from a highly neutralized polymer composition and a layer formed from a thermoset rubber.
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Citations
9 Claims
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1. A golf ball comprising:
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an inner core layer having a diameter of from 0.500 inches to 1.580 inches and formed from a first thermoset rubber composition; at least one outer core layer having a thickness of from 0.005 inches to 0.300 inches and a surface hardness of from 50 Shore C to 90 Shore C and formed from a highly neutralized polymer composition, wherein the highly neutralized polymer composition comprises; an acid copolymer of ethylene and an α
,β
-unsaturated carboxylic acid;a non-acid polymer selected from ethylene-alkyl acrylates and ethylene-alkyl methacrylates and present in an amount of greater than 50 wt %, based on the combined weight of the acid copolymer and the non-acid polymer; an organic acid or salt thereof; and a cation source present in an amount sufficient to neutralize greater than 80% of all acid groups present in the composition; and a cover. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification