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US 10,245,470 B1Granted
Golf ball compositions comprising thermoplastic polyurethane ionomers
AssigneeAcushnet Company
InventorsMark L. Binette, Michael J. Sullivan, Robert Blink, Brian Comeau, David A. Bulpett
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Abstract
The present invention provides a golf ball comprising an inner core and an outer cover layer, wherein at least one of the inner core and outer cover layer is formed from a thermoplastic polyurethane ionomer.
Claims10
A golf ball comprising:
- an inner core layer having an outer surface hardness of 85 Shore C or less and formed from a thermoplastic polyurethane ionomer composition,
- an outer core layer having an outer surface hardness of 50 Shore C or greater and formed from a thermoset rubber composition, and
- a cover;
- wherein the thermoplastic polyurethane ionomer composition of the inner core layer includes an ionic monomer covalently bonded to the polyurethane ionomer backbone, and wherein the ionic monomer comprises a sulfonate containing polyol ion and a quaternary ammonium counterion;
- and
- wherein the outer surface hardness of the outer core layer is greater than the outer surface hardness of the inner core layer.
3 more elements
Dependencies are inferred from the claim text.