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US 9,808,676 B2Granted
Golf ball layers produced using crosslinked highly-neutralized polymer materials
AssigneeAcushnet Company
InventorsMichael J. Sullivan, Mark L. Binette, Robert Blink, David A. Bulpett
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Abstract
The invention relates to golf balls having at least one layer formed from a highly-neutralized polymer material that has been crosslinked. In particular, the compositions of the invention include a highly-neutralized polymer, at least one crosslinking initiator, and at least one coagent. The invention also relates to methods of making the compositions and golf ball constructions that incorporate the compositions of the invention in at least a portion thereof.
Claims15
A golf ball comprising:
- a cover layer formed from a crosslinked composition consisting essentially of:
- a thermoplastic highly-neutralized polymer material comprising:
- an acid polymer comprising ethylene, a C3-8 α, β-ethylenically unsaturated carboxylic acid, and a softening monomer;
- an organic acid or salt thereof;
- and
- a cation source present in an amount sufficient to neutralize at least 80% of all acid groups;
- at least one crosslinking initiator and at least one liquid coagent, wherein the at least one crosslinking initiator comprises a peroxide, a carbon-carbon initiator, or combinations thereof;
- and
- a core.
6 more elements
A golf ball comprising:
- a cover formed from a crosslinked composition consisting essentially of:
- a thermoplastic highly-neutralized polymer material comprising:
- an acid polymer comprising ethylene, a C3-8 α, β-ethylenically unsaturated carboxylic acid, and a softening monomer;
- an organic acid or salt thereof;
- and
- a cation source present in an amount sufficient to neutralize at least 90% of all acid groups;
- and
- at least one free radical initiator comprising a peroxide, a carbon-carbon initiator, persulfate, azo compound, benzophenone, hydrazide, or combinations thereof;
- at least one liquid coagent, wherein the liquid coagent is selected from the group consisting of trimethylolpropane trimethacrylate, acrylate-terminated liquid polybutadiene, and combinations thereof;
- and a melt flow modifier;
- and
- a core.
9 more elements
Dependencies are inferred from the claim text.