Abstract: The present invention provides a composite that has good initial adhesion and good adhesion after high temperature and high humidity aging. Provided is a composite including: a topping rubber composition having a fatty acid content of 0.8% by mass or less; and an adherend plated with a copper-containing layer.

Abstract: A method of forming a golf ball includes molding a golf ball core through at least one of injection molding and compression molding, and subsequently volumetrically contracting the core. Once the core is contracted, an intermediate layer is formed about the core, and the core is subsequently allowed to expand to an intermediate state such that the core applies a contact pressure against an inner surface of the intermediate layer.

Abstract: A multi-layer golf ball can be prepared, possessing the performance characteristics of both a solid ball and a wound ball, by selecting the content and thickness of one or more of the layers, wherein the multi-layer golf ball comprises a center, an intermediate layer, a wound layer of tensioned material, and a cover, such that any one or more of the following are satisfied: (a) at least a portion of the intermediate layer includes a thermoset material; (b) the winding includes fiber, glass, carbon, polyether urea, polyether block copolymers, polyester urea, polyester block copolymers, isotactic-poly(propylene), polyethylene, polyamide, poly(oxymethyiene), polyketone, poly(ethylene terephthalate), poly(p-phenylene terephthalamide), poly(acrylonitrile), diaminodicyclohexyhnethane, dodecanedicarboxylic acid, or copolymers or combinations thereof; (c) the thickness of the wound layer is less than about 1 mm; and (d) at least a portion of the cover includes a thermoset material.

Abstract: The present invention provides a thread wound golf ball having long flight distance, and having large spin amount and good controllability at approach shot when hitting by a short iron club and the like, while maintaining soft and good shot feel at the time of hitting as good as the conventional liquid center type thread wound golf balls. The present invention related to a thread wound golf ball comprising (a) a solid center composed of an inner center formed from a vulcanized molded rubber composition containing an oily substance, and a center outer layer formed from an oil-resistant substance and coated around the inner center so as to prevent the oily substance of the inner center from bleeding, (b) a thread rubber layer formed on the solid center, and (c) a cover covering the thread rubber layer, wherein the inner center has a diameter of 24 to 33 mm, a JIS-A hardness of not more than 50 and a deformation amount of not less than 2.

Abstract: A wound-core golf ball having a polyurethane cover is disclosed. The polyurethane cover is formed by curing a composition comprising a tolylene diisocyanate polyurethane prepolymer and dimethylthiotoluene diamine, and exhibits superior cut resistance. The wound-core golf ball of the invention further comprises a double-layered center having a diameter of 25 to 35 mm and a rubber thread layer covering the center. The center comprises an inner core layer having a diameter of 24 to 33 mm and a JIS-A hardness of 5 to 50, and an outer core layer covering the inner core layer and having a Shore D hardness of 10 and to 60. The wound-core golf ball thus constructed imparts a good shot feeling to the golfer and offers an increased flight distance.

Abstract: A golf ball comprising an inner core formed of a first material and comprising i) a central portion; and ii) a plurality of spaced projections extending radially outward from the central portion forming gaps between each projection, and each projection having an enlarged free end and a substantially conical shape; an outer core formed of a second material, said second material being disposed within the gaps and the recesses to form a core; and a cover layer; wherein at least one of the first and second materials comprises a polymer containing an acid group neutralized by an organic acid or a salt thereof, the organic acid or salt thereof being present in an amount sufficient to neutralize the polymer by at least about 100%.

Abstract: A golf ball with at least one moisture vapor barrier layer is disclosed. In accordance to one aspect of the invention, the moisture vapor barrier layer may comprise nano particles, flaked glass, flaked metals or ceramic particles to increase the layer's resistance to the transmission of moisture through the layer. In accordance to another aspect of the invention, the moisture vapor barrier layer may comprise a soft, high specific gravity layer to increase the moment of inertia of the golf ball. In accordance to another aspect of the invention, the moisture vapor barrier layer may comprise a multi-layer thermoplastic film. In accordance to another aspect of the invention, the moisture vapor barrier layer may be positioned adjacent to a wound layer such that the moisture vapor barrier layer penetrates into the interstitial spaces in the wound layer to minimize the transmission of moisture vapor through the wound layer.

Abstract: A golf ball with at least one moisture vapor barrier layer is disclosed. In accordance to one aspect of the invention, the moisture vapor barrier layer may comprise nano particles, flaked glass, flaked metals or ceramic particles to increase the layer's resistance to the transmission of moisture through the layer. In accordance to another aspect of the invention, the moisture vapor barrier layer may comprise a soft, high specific gravity layer to increase the moment of inertia of the golf ball. In accordance to another aspect of the invention, the moisture vapor barrier layer may comprise a multi-layer thermoplastic film. In accordance to another aspect of the invention, the moisture vapor barrier layer may be positioned adjacent to a wound layer such that the moisture vapor barrier layer penetrates into the interstitial spaces in the wound layer to minimize the transmission of moisture vapor through the wound layer.

Abstract: This invention is directed to golf balls including one or more foamed, microcellular materials. The invention also encompasses methods of controlling or adjusting one or more material properties or the weight distribution of a golf ball, and methods of forming golf balls including such microcellular materials.

Abstract: This invention is directed to golf balls including one or more foamed, microcellular materials. The invention also encompasses methods of controlling or adjusting one or more material properties or the weight distribution of a golf ball, and methods of forming golf balls including such microcellular materials.

Abstract: A solid golf ball has a soft solid core and a hard cover. The cover is formed of a thermoplastic resin-base cover stock, with 11-45 parts by weight of a particulate inorganic filler added thereto per 100 parts by weight of the cover stock. The solid core undergoes a deflection of 3.0 to 5.5 mm under a load of 100 kg. The ball is drastically improved in durability against cracking.

Abstract: The present invention provides a thread wound golf ball having soft and good shot feel at the time of hitting, excellent durability and excellent flight performance. The present invention related to a thread wound golf ball comprising a thread wound core composed of a center and a thread rubber layer formed on the center, and a cover composed of an inner cover formed on the thread rubber layer and an outer cover formed on the inner cover, wherein the outer cover has higher hardness than the inner cover, and has a Shore D hardness of not less than 65.

Abstract: A thread-wound golf ball, such as a balata-covered golf ball, formed of a center 1a, a rubber thread layer 1b covering the center 1a, and a cover 2 is provided. The center 1a has an outer diameter of 28-35 mm and a Shore A hardness of 10-50. The cover 2 is formed of a mixture containing ionomer resin, thermoplastic elastomer and tackifier and has a Shore D hardness of 45-60. As such, the golf ball exhibits great carry distance with good shot feel, provides high spin rate when shot from the rough or in a raining condition, and that easily comes to a halt.

Abstract: The present invention provides a multi-layer structure golf ball having a thread rubber layer, which has good shot feel and controllability as well as satisfactory flight performance and cut resistance. The golf ball includes a thread wound core and a cover covering the thread wound core, wherein the cover is formed from a heated mixture of: (A) an ionomer resin, (B) a thermoplastic elastomer having a carboxyl group or a thermoplastic elastomer having a terminal OH group, and (C) a block copolymer having a styrene-butadiene-styrene structure in which the polybutadiene block contains epoxy groups, or a block copolymer having styrene-isoprene-styrene structure in which the polyisoprene block contains epoxy groups, the cover has a flexural modulus of from 50 to 300 MPa and a Shore D-scale hardness of from 40 to 60.

Abstract: The present invention provides a thread wound golf ball having long flight distance, and high spin amount and excellent controllability when hitting by a short iron club, while keeping the characteristics inherent to the conventional thread wound golf ball, i.e. good shot feel. The present invention related to a thread wound golf ball comprising (a) a solid center composed of an inner center and a center outer layer formed on the inner center, (b) a thread rubber layer formed on the solid center, and (c) a cover covering the thread rubber layer, wherein the inner center has a diameter of 29 to 35 mm and a center hardness in JIS-C hardness of 30 to 70, the center outer layer has a JIS-C hardness of 70 to 90, the solid center has a diameter of 30 to 38 mm, and the cover is formed from thermoplastic resin having a Shore D hardness of 40 to 60.

Abstract: The present invention provides golf balls having a cover, a core, and optionally one or more intermediate layers between the cover and the core, wherein at least one of the cover, the core and, if present, the intermediate layer(s), is formed of an ion-containing polymer composition, particularly a zwitter-ion or ionene polymer. The zwitter-ion polymers contain both cationic and anionic species on the polymer backbone or as a pendant group on the polymer backbone. The ionene polymers are contain only a cationic portion attached to the polymer backbone and are associated with another ion. These ion-containing polymer compositions can be used to provide improved characteristics to golf balls made therefrom. The invention also relates to methods of making and using the compositions in golf balls.

Abstract: The present invention is directed to a golf ball having a core surrounded by an outer cover. The outer cover is formed of conventional materials such as a natural or synthetic resin and in accordance with the present invention, a plurality of hard particles is disposed within the outer cover such that a predetermined number of the hard particles protrude from an outer surface of the outer cover. Preferably, the plurality of hard particles comprises diamond particles and the plurality of diamond particles are present in the golf ball cover such that about 1% to about 40% of the total outer surface area of the outer cover is occupied by the plurality of diamond particles.

Abstract: This invention relates to methods of using cationic ionomers in the composition of inner layers of golf balls. Further, this invention relates to golf balls comprising one or more inner layers and which incorporate polyurethane or polyurea ionomers. The golf ball with inner layers comprising cationic ionomers has improved ball feel and initial velocity through the addition of an alkylating agent such as t-butyl chloride to introduce ionic interactions in the polyurethane or polyurea and thereby produce cationic type ionomers.

Abstract: The present invention is directed to a golf ball comprising a soft core and a hard cover to produce a golf ball having a reduced spin rate. The present invention is also directed to an improved golf ball comprising at least one interior layer and/or a core comprising a silicone material. It is preferred to also utilize a multi-layer cover in conjunction with the silicone materials. The golf ball of the present invention may also utilize an enlarged diameter which serves to further reduce spin rate. The resulting golf ball exhibits properties of reduced spin without sacrificing durability, playability and resilience.

Abstract: A thread-wound golf ball has a wound core consisting of a center with a diameter of 29-37 mm and a rubber thread layer with a thickness of 1.0-2.5 mm. A cover enclosing the wound core is of two-layer construction comprising a relatively soft inner cover layer and a relatively hard outer cover layer having a Shore D hardness of 55-65. The inner and outer cover layers combined have a thickness of 2.0-5.0 mm. This construction gives the golf ball an excellent scuff resistance when hit with an iron club, as well as an improved spin, feel, and flight performance upon a full shot with a driver.

Abstract: A solid golf ball has a solid core and a cover formed of a resin composition comprising the reaction product of a thermoplastic polyurethane elastomer with an isocyanate compound. The ball is efficiently moldable and meets such requirements as a pleasant feel, ease of control, high resilience, and minimized scuffs by iron shots.

Abstract: In a wound golf ball comprising a solid center, thread rubber winding and a cover, the cover is formed to a multilayer structure including an outer layer having a specific gravity of 0.95-1.2 and an inner layer having a higher hardness than said outer layer and a specific gravity of 1.1-1.4. The ball is improved in distance, spin and durability.

Abstract: A golf ball, comprising:a core;an inner cover layer formed over the core, the inner cover layer having a Shore D hardness of at least 60 as measured on the curved surface thereof, andan outer cover layer formed over the inner cover layer, the outer cover layer having a Shore D hardness of no more than 53 as measured on the curved surface thereof,at least one of the inner and outer cover layers comprising at least one member selected from the group consisting of polycarbonates, reaction-injection-molded polyurethanes, and styrene-butadiene elastomers,the golf ball having a PGA compression of 100 or less and a coefficient of restitution of at least 0.750.

Abstract: A thread-wound golf ball includes a core having a center ball and a rubber thread layer and a cover. The cover of the ball has a two-layer structure consisting of an inner layer and an outer layer, each made from differing cover stock formulations of thermoplastic polyurethane elastomer.

Abstract: A thread-wound golf ball includes a core having a center ball and a rubber thread layer and a cover. The cover is composed primarily of a thermoplastic polyurethane elastomer of an aliphatic and/or alicyclic diisocyanate. The golf ball is prepared by impregnating the rubber thread layer with a urethane dispersion and injection molding the cover over the treated core.

Abstract: A multi-layer structured golf ball having high initial velocity at low head speed region and excellent flight performance, while maintaining the characteristics inherent in conventional thread wound golf balls, i.e. good shot feel, wherein the multi-layer structured golf ball has (a) a solid core having a diameter of 23 to 37 mm, and a deformation amount of 2.5-10 mm with a load of 10 kgf to 130 kgf (b) an intermediate cover having a thickness of 0.5 to 5.0 mm and formed from a thermoplastic resin on the solid core, (c) a thread rubber layer having a thickness of 1.0 to 5.0 mm, formed on the intermediate cover, and (d) an outer cover covering the thread rubber layer, formed from a thermoplastic resin.

Abstract: In a wound golf ball comprising a wound core and a cover, the wound core is formed by winding thread rubber on a center ball of multi-layer structure consisting of an inner sphere and an enclosure layer. The inner sphere has a diameter of 28-37 mm and a distortion of 3.5-10 mm under a load of 100 kg. The enclosure has a melting point higher than the cover molding temperature and a Shore D hardness of 40-75. The center ball has an outer diameter of 33-38 mm and a distortion of 2.5-6 mm under a load of 100 kg. Whether the head speed is high or low, an increased flight distance and improved feel are obtained.

Abstract: The present invention is directed towards a multilayer golf ball which comprises a core, an inner cover layer and an outer cover layer, wherein the outer cover layer comprises a thermoset material formed from a castable, reactive liquid, said outer layer having a thickness of less than 0.05 inches and said inner cover layer comprises a high flexural modulus material. The golf balls of the present invention are believed to provide a "progressive performance" from driver to wedge.

Abstract: The present invention relates to a golf ball cover composition comprising: a) from about 45 to 55 weight percent of a first high acid ionomer having an acid content of about 19 weight percent and, b) from 55 to 45 weight percent of an ionomer selected from the group consisting of i) a second high acid ionomer having acid groups neutralized with a different metal ion than said first high acid ionomer, and ii) an ionomer containing about 15 weight percent acid groups.

Abstract: A thread rubber for thread wound golf balls having a high impact resilience and high strength, wherein the thread rubber is obtained by vulcanizing a rubber composition which comprises (a) a rubber component selected from the group consisting of natural rubber, a synthetic high-cis-polyisoprene rubber and a mixture thereof, (b) at least one specific diaryl disulfide, (c) a vulcanizing agent, and (d) antioxidant; the compound (b) being present in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the rubber component (a).

Abstract: The present invention provides a golf ball having good shot feel and controllability and showing excellent rebound characteristics to give long flight distance. The golf ball of the present invention includes a core and a cover present on the core, an intermediate layer optionally being present between the core and the cover, wherein at least one layer of the cover or the intermediate layer has a thickness of 1 to 3 mm and is formed from a composition having an elasticity modulus (E*) at -30.degree. to +20.degree. C. of 1,000 to 9,000 Kgf/cm.sup.2 and a loss tangent at -30.degree. to +20.degree. C. of 0.02 to 0.1., and the core, whether solid core or thread wound core, has a spring constant at compression deformation of 15 to 60 Kgf/mm.

Abstract: A wound golf ball is constructed by winding thread rubber on a center ball and enclosing with a cover. The center ball consists of a center core having a diameter of 20-37 mm and experiencing a distortion of 1-5 mm under a load of 100 kg and an enclosure layer having a Shore D hardness of 33-54 and has a diameter of 33-38 mm. The center core comprises a rubber composition comprising a base rubber, a co-crossing linking agent and a peroxide and being free of an oily substance. The cover consists of an inner layer having a Shore D hardness of 55-68 and an outer layer having a Shore D hardness of 30-58, the inner layer being harder than the outer layer by at least 5 in Shore D hardness. The ball is not only improved in spin, control, and flight distance on driver and approach shots, but also gives pleasant hitting feel with click.

Abstract: In a wound golf ball comprising a center ball having thread rubber wound thereon and a cover, the center ball consists of a center core having an outer diameter of 27-37 mm and a distortion of 3.5-10 mm under a load of 100 kg and an enclosure layer having a Shore D hardness of 55-68. The center ball has an outer diameter of 33-38 mm. The center core comprises a rubber composition having a base rubber, a co-cross linking agent and a peroxide and being free of an oily substance. The ball is improved in spin, control and flight distance at any head speed from high to low ranges so that players may favorably use it independent of their skill or head speed.

Abstract: A wound golf ball comprising: a center ball, thread rubber wound thereon, and a cover, wherein the center ball consists of a center core having an outer diameter of up to 37 mm and a distortion of 1 to 5 mm under a constant load of 100 kg and an enclosure layer enclosing the center core and having a Shore D hardness of up to 54. The center ball has an outer diameter of 33 to 38 mm, and the center core comprises a rubber composition having a base rubber, a co-cross linking agent and a peroxide and being free of an oily substance.

Abstract: The present invention provides a thread wound golf ball which has good shot feel and good controllability, and attains long flight distance. The thread wound golf ball of the present invention comprises(a) a solid center,(b) a thread rubber layer formed on the solid center, and(c) a cover having a two-layer structure of an inner layer cover and an outer layer cover, the inner layer cover being formed on the thread rubber layer and the outer layer cover being formed on the inner layer cover,wherein the solid center has a diameter of from 29 to 35 mm, the cover contains an ionomer resin as a main component, the inner layer cover has a flexural modulus of from 300 to 600 MPa, and the outer layer cover has a flexural modulus of from 50 to 290 MPa.

Abstract: The present invention provides a golf ball which is superior in shot feel and controllability, and is superior in flight performance, durability and cut resistance and also have sufficient safety. The golf ball comprises a solid center, a thread rubber layer formed on the solid center and a cover formed on the thread rubber layer,wherein the solid center is composed of an inner spherical rubber formed of a vulcanized molded rubber composition containing an oily substance, and a coating layer of an oil-resistant substance for coating around the inner spherical rubber so as to prevent the bleeding of the oily substance of the inner spherical rubber, andthe cover contains an ionomer resin as a main component and a cover composition constituting the cover has a stiffness modulus of from 70 to 280 MPs.

Abstract: The present invention provides a thread-wound golf ball comprising a thread rubber ball prepared by winding thread rubber around a spherical solid center, and a cover enclosing the thread rubber ball therewith, which has a number of dimples of from 350 to 500 and a dimple volume rate of 0.76 to 0.9 percent, and wherein the solid center has an outer diameter of from 27 to 38 mm, a deformation under a load of 30 Kg of from 1.5 to 3.5 mm and a rebound, when dropped from a height of 120 cm, of at least 96 cm. The thread-wound golf balls of the present invention show good spin properties in addition to good restitution properties, resulting in improved travel distance.

Abstract: In a wound golf ball comprising a solid center (1), thread rubber (2), and a cover (3), the cover has a multi-layer structure including an outer layer (4) and an inner layer (5) having a higher hardness than the outer layer. The outer layer (4) is 0.4-3.0 mm thick, and it is formed of a first ionomer resin having a Shore D hardness of 40 to 55. The inner layer is formed of a second ionomer resin having a Shore D hardness of 55 to 68. The difference in hardness between the first and second ionomer resins is at least 5 in Shore D hardness. The ball affords improved spin and durability.

Abstract: Like-new golf balls are made from used golf balls by first reducing the diameter of the used ball, to provide an intermediate ball, and then molding a new dimpled cover on the ball. The diameter of the used ball is uniformly reduced by compression molding or by grinding.

Abstract: A thread wound golf ball comprising a solid center, a thread rubber layer provided on the outside of the solid center and a cover for covering the thread rubber layer, wherein said center has a strain of 0.5 to 5 mm when 500 g weight is loaded on the solid center and is composed of an inner rubber portion, and said inner rubber portion has a crosslinked rubber structure, formed from a composition comprising 100 parts by weight of a base rubber and 30 to 500 parts by weight of an oily substance, whereby bleeding of the oily substance is prevented, wherein said oily substance is selected from the group consisting of petroleum compounded oil, plasticizer, rubber substitute, alkylbenzene, liquid rubber and a mixture thereof; and wherein said oil-resistant substance is selected from the group consisting of ionomer resin, acrylonitrile-butadiene rubber, chloroprene rubber, urethane rubber, fluorosilicone rubber and a mixture thereof.