High coefficient golf ball core
AssigneeSpalding & Evenflo Companies, Inc.
InventorRobert P. Molitor
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Abstract
Disclosed is a composition for manufacturing one-piece golf ball cores having improved coefficient of restitutions. The composition comprises an elastomer cross-linkable with a free radical initiator catalyst, a metal salt of an alpha, beta, ethylinically unsaturated monocarboxylic acid such as zinc di or mono acrylate or methacrylate, a free radical initiator catalyst, and a polyfunctional isocyanate, preferably a diisocyanate such as 4,4' diphenylmethane diisocyanate, or a polymer thereof.
Claims12
A golf ball comprising a cover and a molded, spherical core, said core comprising the product of reaction of a mixture of at least:
- an elastomer cross-linkable by a free radical initiator catalyst;
- a zinc salt of an alpha, beta, ethylenically unsaturated monocarboxylic acid;
- a free radical initiator catalyst;
- and
- between about 0.10 and 10 parts per 100 parts of said elastomer of a compound consisting of a polyfunctional isocyanate, said isocyanate having at least two isocyanate groups and being present in an amount sufficient to increase the coefficient of restitution of said core relative to otherwise identical cores free of said isocyanate.
Dependencies are inferred from the claim text.