Multi-layer golf ball with reaction injection molded polyurethane component
First Claim
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1. A golf ball comprising:
- a core;
an inner cover layer disposed on the core, the inner cover layer having a Shore D hardness of at least 60, andan outer cover layer disposed on the inner core layer,wherein the outer cover layer comprises a reaction product of one or more reactive components selected from the group consisting of i) polyether-polyols, polyester-polyols, polyamine, and materials with an active hydrogen, and ii) one or more isocyanate-containing constituents, and wherein the outer cover layer is comprised of a relatively soft, low modulus material having a flexural modulus of from about 1,000 psi to about 10,000 psi.
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Abstract
Disclosed herein is a multi-layer golf ball having a soft outer cover. The golf ball has a core, one or more mantle or inner cover layers with a Shore D hardness of 60 or more, and an outer cover with a Shore D hardness of 53 or less. In a particularly preferred form of the invention, the inner and/or outer cover layers comprise a reaction injection molded polyurethane. The golf ball of the invention has exceptionally soft feel and high spin rates on short shots of 80 yards or less and, particularly, 40 yards or less, while maintaining good distance and average spin on full shots.
160 Citations
16 Claims
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1. A golf ball comprising:
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a core; an inner cover layer disposed on the core, the inner cover layer having a Shore D hardness of at least 60, and an outer cover layer disposed on the inner core layer, wherein the outer cover layer comprises a reaction product of one or more reactive components selected from the group consisting of i) polyether-polyols, polyester-polyols, polyamine, and materials with an active hydrogen, and ii) one or more isocyanate-containing constituents, and wherein the outer cover layer is comprised of a relatively soft, low modulus material having a flexural modulus of from about 1,000 psi to about 10,000 psi. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A golf ball comprising:
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a core, a first inner cover layer formed about said core, a second inner cover layer formed about said first inner cover layer, said second inner cover layer including at least 50 weight percent of at least one material selected from the group consisting of ionomer resins, polycarbonates, reaction-injection-molded polyurethanes, styrene-butadiene elastomers and combinations thereof, and an outer cover layer formed over the second inner cover layer, the outer cover layer comprising a reaction product of one or more reactive components selected from the group consisting of i) polyether-polyols, polyester-polyols, polyamine, and materials with an active hydrogen, and ii) one or more isocyanate-containing constituents, the golf ball having a PGA compression of 100 or less and a coefficient of restitution of at least 0.750, and wherein the outer cover layer is comprised of a relatively soft, low modulus material having a flexural modulus of from about 1,000 psi to about 10 ,000 psi. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification