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US 10,478,675 B2Granted
Multi-layer core golf ball
AssigneeAcushnet Company
InventorsMichael J. Sullivan, David A. Bulpett, Robert Blink, Mark L. Binette, Brian Comeau
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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.
Claims8
A three-layer golf ball consisting essentially of:
- an inner core layer having a diameter of from 0.500 inches to 1.580 inches and formed from a first thermoset rubber composition;
- an 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 single layer cover.
6 more elements
Dependencies are inferred from the claim text.