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US 7,744,494 B2Granted
Multi-modal ionomeric golf ball compositions
AssigneeAcushnet Company
InventorsMichael D. Jordan, Murali Rajagopalan
Life of this patent
Estimating the term…
Abstract
Compositions for golf balls including multi-modal ionomers that can be used in any layer of a golf ball, e.g., an outer cover layer or inner cover layer. The compositions of the invention can be a blend of a multi-modal ionomer and a conventional ionomer, highly neutralized polymer, acid copolymer, or other suitable thermoplastic polymer.
Claims19
A golf ball comprising:
- a core having a diameter of about 1.50 inches to about 1.60 inches;
- and
- a cover having a thickness of about 0.03 to about 0.07 inches formed from a composition comprising:
- a multi-modal ionomer comprising a first copolymer having a molecular weight of about 70,000 or greater and acid groups having a first degree of neutralization and a second copolymer having a molecular weight of about 40,000 or less and acid groups having a second degree of neutralization, and wherein the first and second degrees of neutralization result in a flexural modulus of about 27,000 psi to about 90,000 psi after 2 weeks.
1 more element
A golf ball comprising:
- a core having a diameter of about 1.50 inches to about 1.60 inches;
- an intermediate layer;
- and
- a cover having a thickness of about 0.03 to about 0.07 inches, wherein the cover of the golf ball is formed from a composition comprising:
- a multi-modal ionomer present in an amount of about 10 percent to about 40 percent by weight of the composition and comprising a first copolymer having a molecular weight of about 70,000 or greater and a second copolymer having a molecular weight of about 40,000 or less;
- and
- a thermoplastic polymer present in an amount of about 60 percent to about 90 percent by weight of the composition, wherein the multi-modal ionomer has a flexural modulus of about 35,000 psi to about 65,000 psi after 2 weeks.
4 more elements
A golf ball comprising:
- a core having a diameter of about 1.50 inches to about 1.60 inches;
- and
- a cover having a thickness of about 0.03 to about 0.07 inches, wherein the cover is formed from a composition comprising:
- an in-situ neutralized multi-modal polymer comprising a first acid copolymer having a molecular weight of about 70,000 or greater and a first degree of acid group neutralization, a second acid copolymer having a molecular weight of about 40,000 or less and a second degree of acid group neutralization, and wherein the first and second degree of acid neutralization results in a multi-modal polymer having a flexural modulus of about 27,000 psi to about 90,000 psi after 2 weeks.
1 more element
Dependencies are inferred from the claim text.