Multi-layered golf ball and composition
First Claim
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1. A golf ball comprising:
- a core having a compression of no greater than about 90; and
a cover having at least one layer being formed from a blend comprising;
a polyether-type thermoplastic polyurethane having a percent rebound resilience of greater than 60 such that the golf ball has a coefficient of restitution of greater than about 0.76; and
a second thermoplastic component selected from the group consisting of polyesterester block copolymers, polyetherester block copolymers, polyetheramide block copolymers, dynamically vulcanized thermoplastic elastomers, styrene-butadiene elastomers, other thermoplastic polyurethanes, thermoplastic polyesters, polymers formed using a metallocene catalyst, and blends thereof.
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Abstract
The present invention is directed towards a multi-layer golf ball which comprises a core, a cover layer and at least one intermediate layer disposed between the core and cover, wherein the intermediate layer comprises a polyether-type polyurethane and optionally, a second thermoplastic component such as polyetherester block copolymer, polyesterester block copolymer, polyetheramide block copolymer, dynamically vulcanized thermoplastic elastomer, functionalized styrene-butadiene elastomer, thermoplastic polyurethane, thermoplastic polyesters, metallocene polymer or blends thereof and a density-modifying filler such as zinc oxide, titanium dioxide or blends thereof.
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Citations
14 Claims
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1. A golf ball comprising:
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a core having a compression of no greater than about 90; and
a cover having at least one layer being formed from a blend comprising;
a polyether-type thermoplastic polyurethane having a percent rebound resilience of greater than 60 such that the golf ball has a coefficient of restitution of greater than about 0.76; and
a second thermoplastic component selected from the group consisting of polyesterester block copolymers, polyetherester block copolymers, polyetheramide block copolymers, dynamically vulcanized thermoplastic elastomers, styrene-butadiene elastomers, other thermoplastic polyurethanes, thermoplastic polyesters, polymers formed using a metallocene catalyst, and blends thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A golf ball comprising:
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a core comprising polybutadiene;
a cover layer having a Shore D hardness of about 54 to 72; and
at least one intermediate layer disposed between the cover and the core, wherein the intermediate layer has a Shore D hardness of less than about 40 and a flexural modulus of less than about 10.000 psi and wherein the at least one intermediate layer is formed from a blend comprising polyether-type polyurethane and a second thermoplastic component, and wherein the golf ball has a coefficient of restitution of greater than about 0.78. - View Dependent Claims (13, 14)
about 30 to 60 percent by weight of the polyether-type polyurethane;
about 15 to 30 weight percent filler material; and
about 20 to 40 weight percent of a block copolymer.
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14. The golf ball of claim 12, wherein the blend comprises less than about 40 weight percent polyetherester block copolymer.
Specification