An object of the present invention is to provide a golf ball having excellent shot feeling and durability. The present invention provides a golf ball comprising a constituent member containing a crosslinked rubber component and resin fine particles, wherein the resin fine particles contain a polyrotaxane component having a cyclodextrin, a linear molecule piercing through the cyclic structure of the cyclodextrin, and blocking groups located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin, wherein at least a part of hydroxyl groups of the cyclodextrin is modified with a caprolactone chain via a OC.sub.3H.sub.6O group.

A golf ball for amateur golfers is endowed with both an excellent flight and a good, soft feel at impact when hit by the average golfer whose head speed is not very high. The golf ball, which includes a core and a cover, has a compressive deformation A when subjected to a final load of 5 kgf from an initial load of 0.2 kgf that is 0.18 mm or less, a compressive deformation B when subjected to a final load of 50 kgf from an initial load of 5 kgf that is from 1.30 to 1.69 mm and a compressive deformation C when subjected to a final load of 90 kgf from an initial load of 5 kgf that is from 2.45 to 2.90 mm.

A golf ball with a core comprising polybutadiene and graphene, and a soft cover is disclosed herein. The golf ball has a dual core with an outer core comprising polybutadiene and graphene. The soft cover is preferably composed of a highly neutralized polymer, a first ionomer, a second ionomer, and a paraloid impact modifier.

A golf ball comprising: (a) a core: (b) an outer cover layer; and (c) optionally, at least one intermediate layer, wherein at least the outer cover layer or the intermediate layer comprises a blend composition of: (i) a metallic coagent; and (ii)(a) at least one polyolefin or (ii)(b) at least one ionomer.

Golf ball comprising a colorless coating surrounding and adjacent to a TiO.sub.2 white-pigmented layer comprising a polymeric composition that comprises throughout: (i) passivated TiO.sub.2 particulates amount of from about 1 wt. %-10 wt. % based on total weight of second polymeric composition; and (ii) silane-containing adhesion promoter(s), for example, organosilanes and/or organosiloxanes in an amount of from about 0.1 wt. % to about 5.0 wt. % of the total weight of the polymeric composition. The coating comprises a coating composition that is different than the polymeric composition and does not contain any silane-containing adhesion promoter; and there is no surface treatment with adhesion promoter at an interface between the colorless coating and TiO.sub.2 white-pigmented layer. In lieu of the colorless coating, the golf ball may include a coating that is clear tinted or translucent.

Method of making golf ball comprising aligning thermoformed depressions with dimpled mold cups and applying sufficient heat and suction to the thermoformed depressions without exposing any preselected subassembly to the heat and suction to soften the polymeric material of each thermoformed depression and draw air outward from a volume located between an inner surface of the dimpled mold cup and an outer surface of the thermoformed depression to form a thermoformed pre-form half-shell having an outer surface with the size, shape and contour of the inner surface of the dimpled mold cup(s) and an inner surface with the size, shape and contour of the outer surface of a preselected subassembly. Afterwards, a preselected subassembly is loaded between a pair of thermoformed pre-form half-shells and molded under sufficient short-term heat and suction to form the golf ball. The thickness of each thermoformed depression and thermoformed pre-form half-shell may be tapered.

A golf ball comprising: (a) a core: (b) an outer cover layer; and (c) optionally, at least one intermediate layer, wherein at least the outer cover layer or the intermediate layer comprises a blend composition of: (i) a metallic coagent; and (ii)(a) at least one polyolefin or (ii)(b) at least one ionomer.

Method of making a golf ball, the golf ball comprising a core, an outer layer and at least one adhesion promoting coating disposed between each of the core and the outer layer; the core comprising a rubber composition comprising at least one zinc-containing and/or magnesium-containing component; the outer layer comprising at least one ionomer; and the adhesion promoting coating comprising a waterborne dispersion comprised of at least one ethylene acid copolymer having an acid content of at least 15% by weight wherein the copolymer is at least partially neutralized with one or more neutralizing agent; wherein at least one neutralizing agent is selected from ammonia compounds and/or amine compounds. In a specific embodiment, the at least one neutralizing agent comprises i) mono and/or divalent metal compounds and ii) ammonia compounds and/or amine compounds.

Automated system and method wherein the color of each core is detected and distinguished before the core is covered, and any core having a non-conforming core color is rejected and released/removed/eliminated from further processing.

Methods of forming dual core golf ball constructions achieving consistent and repeatable concentricity by incorporating a pair of novel partially cured hemispherical shells produced using an inventive center plate button. The pair of resulting novel hemispherical shells may be collectively compression molded about and reliably center a spherical inner core there within due to the novel resulting centering features/structure provided on the inner surface of each partially cured hemispherical shell by the novel center plate button used to form same. Securing features/structure are thereby provided within/on inner surfaces of resulting partially cured hemispherical shells in order to prevent undesirable movement of the spherical inner core there within until the final compression molding step occurs.