Abstract: The present invention is directed to a golf ball having at least one layer formed from a rubber composition comprising a base rubber, at least 0.05 parts by weight of a free radical initiator, per 100 parts of the base rubber, and at least 0.1 parts by weight of a hydroquinone, per 100 parts of the base rubber. A ratio of the amount of the hydroquinone present in the rubber composition to the amount of free radical initiator present in the rubber composition is generally from 0.05 to 2. The rubber composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.

Abstract: The present invention is directed to a golf ball having at least one layer formed from a rubber composition comprising a base rubber, at least 0.05 parts by weight of a free radical initiator, per 100 parts of the base rubber, and at least 0.1 parts by weight of a benzoquinone, per 100 parts of the base rubber. The rubber composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.

Abstract: The present invention is directed to a golf ball having at least one layer formed from a rubber composition comprising a base rubber, a free radical initiator, and a quinhydrone. The free radical initiator is generally present in the rubber composition in an amount of at least 0.05 parts by weight per 100 parts of the base rubber. The quinhydrone is generally present in the rubber composition in an amount of at least 0.05 parts by weight per 100 parts of the base rubber. The rubber composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.

Abstract: The present invention is directed to a golf ball having at least one layer formed from a rubber composition comprising a base rubber, a free radical initiator, and a catechol. The present invention is also directed to a golf ball having at least one layer formed from a rubber composition comprising a base rubber, a free radical initiator, and a resorcinol. Rubber compositions of the present invention may be present in any one or more of a core layer, a cover layer, or an intermediate layer.

Abstract: A golf ball including a solid core formed from a composition comprising a diene rubber, a metallic fatty acid salt present in an amount of from 6.3 parts to 7.5 parts, a cis-to-trans catalyst present in an amount of 2.35 parts or greater, and an organic peroxide present in an amount of 0.8 parts or less; and a cover; wherein the core has a coefficient of restitution of 0.810 or greater and a compression of 58 to 78.

Abstract: The invention provides a process for manufacturing a golf ball, particularly a multi-layer golf ball. The process comprises forming a pre-molded center, molding two substantially hemispherical shells having substantially hemi spherical cavities, shaping the shells in a press having a top mold and a bottom mold, each with cavities concaving toward each other and a center plate having top and bottom protrusions. The shells are placed in the cavities of the bottom mold and the protrusions of the center plate. The three parts of the press are aligned and closed as the press is heated to a temperature below the cure activation temperature of the shell material. The center plate is then removed from the press with the shells in the cavities of the top and bottom mold. as ball center is inserted between the shells and the press is again closed and heated to a second temperature, above the cure activation temperature, fusing the shells around the center and forming a golf ball core.