Three-layer-core golf ball having highly-neutralized polymer outer core layer
First Claim
1. A golf ball comprising:
- an inner core layer comprising a thermoset rubber composition and having a first outer surface Shore D hardness and an outer diameter of about 0.8 inches to about 1.40 inches;
a thermoplastic outer core layer having a second outer surface Shore D hardness, and comprising a copolymer of ethylene and an α
,β
-unsaturated carboxylic acid, a magnesium salt of oleic acid, and sufficient cation source to fully-neutralize the acid groups of the copolymer;
an inner cover layer; and
an outer cover layer;
wherein the first outer surface Shore D hardness is greater than the second outer surface Shore D hardness and the outer core layer has a thickness of about 0.01 inches to about 0.05 inches.
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Accused Products
Abstract
A golf ball includes an inner core layer formed from a thermoset rubber composition. The inner core layer has a first outer surface Shore D hardness and an outer diameter of about 0.8 to 1.40 inches. A thermoplastic outer core layer is formed around the inner core layer, has a second outer surface Shore D hardness, and is formed from a copolymer of ethylene and an α,β-unsaturated carboxylic acid, a magnesium salt of oleic acid, and sufficient cation source to fully-neutralize the acid groups of the copolymer. The golf ball includes an inner cover layer and an outer cover layer. The first outer surface Shore D hardness is greater than the second outer surface Shore D hardness and the outer core layer has a thickness of about 0.01 inches to 0.05 inches.
81 Citations
8 Claims
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1. A golf ball comprising:
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an inner core layer comprising a thermoset rubber composition and having a first outer surface Shore D hardness and an outer diameter of about 0.8 inches to about 1.40 inches; a thermoplastic outer core layer having a second outer surface Shore D hardness, and comprising a copolymer of ethylene and an α
,β
-unsaturated carboxylic acid, a magnesium salt of oleic acid, and sufficient cation source to fully-neutralize the acid groups of the copolymer;an inner cover layer; and an outer cover layer; wherein the first outer surface Shore D hardness is greater than the second outer surface Shore D hardness and the outer core layer has a thickness of about 0.01 inches to about 0.05 inches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification