Abstract: A golf ball having at least a core and a cover, wherein at least a portion of the ball is formed from a material resulting from the isomerization of an amount of polybutadiene in solution to create a resulting polybutadiene having an increased content of trans-polybutadiene, is disclosed. Isomerization can be accomplished by mixing a photo-sensitizer into the polybutadiene solution and exposing the resulting mixture to a radiation source such as ultraviolet radiation. Isomerization can also be accomplished thermally by mixing nitrogen dioxide into a sufficiently heated solution of polybutadiene and maintaining the mixture at an elevated temperature for a sufficient period of time to increase the trans-polybutadiene content of the polymer. The resulting polybutadiene is recovered, mixed with other additives as desired and formed into one or more portions of a golf ball.

Abstract: The present invention is directed to resilient golf balls and portions thereof including compositions containing zinc dimethacrylate and zinc pentachlorothiophenol, and methods for making same. In particular, the present invention is directed to a golf ball having at least one of a center, cover, or intermediate layer that includes a reaction product that includes a resilient polymer component, a free radical source, zinc dimethacrylate and at least one halogenated organosulfur compound having the following general formula I: where R1-R5 can be substituted or unsubstituted C1-C8 alkyl groups; halogen groups; thiol groups (—SH), carboxylated groups; sulfonated groups; and hydrogen; in any order.

Abstract: A golf ball consisting of a core having a diameter of between about 1.54 and about 1.61 inches and a compression of between about 70 and about 80, the core comprising a polybutadiene rubber having a Mooney viscosity of less than about 50 and a halogenated organosulfur compound, or a salt thereof, present in an amount of at least about 2.2 parts per hundred parts of polybutadiene rubber, the halogenated organosulfur compound having the formula: where R1-R5 are C1-C8 alkyl groups; halogen groups; thiol groups; carboxylated groups; sulfonated groups; or hydrogen; and a cover having a thickness of less than about 0.05 inches, the cover consisting essentially of a first ionomeric material, a second ionomeric material, and a metallocene-catalyzed polymer.

Abstract: A golf ball comprising a core and a cover, wherein at least the core or the cover comprises an elastomeric composition comprising a base polymer and a carbon-carbon initiator.

Abstract: A golf ball consisting of a core and a cover. The core has a diameter of between about 1.54 and about 1.58 inches and a compression of between about 22 and about 50. Additionally, the core includes a polybutadiene rubber having a Mooney viscosity of less than about 50 and a halogenated organosulfur compound present in an amount of at least about 2.2 parts per hundred parts of polybutadiene rubber, the halogenated organosulfur compound having the formula: where R1-R5 are C1-C8 alkyl groups; halogen groups; thiol groups; carboxylated groups; sulfonated groups; or hydrogen; and a regrind filler present in an amount of from about 5 parts to about 26.5 parts per hundred parts of polybutadiene rubber. The cover has a thickness of between about 0.05 inches and about 0.1 inches and consisting essentially of a first ionomeric material and a second ionomeric material. The golf ball has a coefficient of restitution of at least about 0.813 when measured at 125 ft/s.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball consisting of a core having a diameter of between about 1.54 and about 1.61 inches and a compression of between about 70 and about 80, the core comprising a polybutadiene rubber having a Mooney viscosity of less than about 50 and a halogenated organosulfur compound, or a salt thereof, present in an amount of at least about 2.

Abstract: A golf ball consisting of a core and a cover. The core has a diameter of between about 1.54 and about 1.58 inches and a compression of between about 22 and about 50. Additionally, the core includes a polybutadiene rubber having a Mooney viscosity of less than about 50 and a halogenated organosulfur compound present in an amount of at least about 2.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.

Abstract: A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.