Abstract: An object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition comprising (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of the binary copolymer, (a-3) a ternary copolymer composed of the binary copolymer components and an ?,?-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of the ternary copolymer components; and (B) a basic metal salt of a fatty acid, and having a spin-lattice relaxation time (T1) of 13C nucleus of 5.56 seconds or shorter measured by a High resolution solid state nuclear magnetic resonance (NMR) method.

Abstract: An object of the present invention is to provide a golf ball polyurethane composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with one alicyclic hydrocarbon structure having 3 or more carbon atoms as a constituting component, and having a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfying a following expression; log(E?/E?2)??6.53 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.

Abstract: An object of the present invention is to provide a golf ball resin composition excellent in shot feeling and resilience. The golf ball resin composition includes (A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an ?,?-unsaturated carboxylic acid having 3 to 8 carbon atoms, (a-2) an ionomer resin consisting of a metal ion-neutralized product of the binary copolymer components, (a-3) a ternary copolymer composed of the binary copolymer components and an ?,?-unsaturated carboxylic acid ester, and (a-4) an ionomer resin consisting of a metal ion-neutralized product of the ternary copolymer components; and (B) a basic metal salt of a fatty acid, and having a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfying a following expression; log(E?/E?2)??5.84 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.

Abstract: An object of the present invention is to provide a golf club grip showing a good feeling both at hitting and at waggling. The present invention provides a golf club grip comprising a cylindrical portion for inserting a shaft, wherein the cylindrical portion has a compression strain in a range from 46% to 55% at a compression stress of 20 kg/cm2, and a compression strain in a range from 63% to 69% at a compression stress of 120 kg/cm2.

Abstract: An object of the present invention is to provide a grip for sporting goods excellent in tensile strength and having a light weight. The present invention provides a grip for sporting goods comprising a cylindrical portion composed of a cylindrical inner layer and a cylindrical outer layer covering the cylindrical inner layer, wherein the cylindrical inner layer is a porous rubber layer or a porous resin layer, and the cylindrical outer layer is formed from a rubber composition containing an acrylonitrile-butadiene based rubber.

Abstract: An object of the present invention is to provide a golf club grip comprising a layer containing a polar rubber and a layer containing a nonpolar rubber, and excellent in tensile strength. The present invention provides a golf club grip comprising a polar rubber layer and a nonpolar rubber layer, wherein the polar rubber layer is formed from a rubber composition containing a base rubber including a polar rubber in an amount of 50 mass % or more, the nonpolar rubber layer is formed from a rubber composition containing a base rubber including a nonpolar rubber in an amount of 50 mass % or more, the polar rubber layer and the nonpolar rubber layer are laminated via an interlayer formed from an interlayer composition containing an olefin rubber.

Abstract: An object of the present invention is to provide a golf ball polyurethane composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with at least two alicyclic hydrocarbon structures having 3 or more carbon atoms as a constituting component, and having a spin-lattice relaxation time (T1) of 13C nucleus of 7.3 seconds or less measured by a High resolution solid state nuclear magnetic resonance (NMR) method.

Abstract: An object of the present invention is to provide a golf ball polyurethane composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball polyurethane composition comprising, as a resin component, a polyurethane elastomer including a polyisocyanate with at least two alicyclic hydrocarbon structures having 3 or more carbon atoms as a constituting component, and having a storage modulus E? (Pa) and a loss modulus E? (Pa) satisfying a following expression; log(E?/E?2)??6.08 when measured in a tensile mode using a dynamic viscoelasticity measuring apparatus.

Abstract: The invention provides a resin composition for golf balls having excellent resilience, flexibility and fluidity, and golf balls having excellent resilience and shot feel.

Abstract: An object of the present invention is to provide a golf ball exhibiting an excellent shot feeling and resilience, and a constituent material thereof. The present invention provides a golf ball resin composition having a bending stiffness (M3-12) ranging from 300 kgf/cm2 to 24,000 kgf/cm2 at a bending angle from 3° to 12°, a ratio (M3-12/M24-30) of the bending stiffness (M3-12) at the bending angle from 3° to 12° to a bending stiffness (M24-30) at a bending angle from 24° to 30° ranging from 0.20 to 2.00, and a slab hardness ranging from 30 to 65 in Shore D hardness.

Abstract: An object of the present invention is to provide a soft golf ball resin composition excellent in the shot feeling and resilience. The present invention provides a golf ball resin composition comprising: (A) 100 parts by mass of at least one resin component selected from the group consisting of (a-1) a binary copolymer, (a-2) a binary ionomer resin, (a-3) a ternary copolymer, and (a-4) a ternary ionomer resin, (B) 1 part to 25 parts by mass of a phosphate ester and/or a salt thereof; and (C) 0 part to 200 parts by mass of a basic inorganic metal compound. The golf ball of the present invention comprises a constituent member formed from the golf ball resin composition.

Abstract: An object of the present invention is to provide a golf club grip excellent in grip performance in a wet condition. The present invention provides a golf club grip formed from a rubber composition comprising a base rubber and a crosslinking agent, wherein the base rubber comprises a hydrogenated acrylonitrile-butadiene rubber and/or a carboxyl-modified acrylonitrile-butadiene rubber.

Abstract: An object of the present invention is to improve the abrasion resistance and controllability in a golf ball having a polyurethane cover containing a layered silicate or the exfoliated layer thereof. The present invention provides a golf ball comprising a core and a cover covering the core, wherein the cover comprises a polyurethane resin having a secondary or tertiary amine structure in a molecular chain thereof, the secondary or tertiary amine structure being cationized, and a layered silicate and/or an exfoliated product thereof, having an average aspect ratio of unit layers thereof ranging from 10 to 50.

Abstract: An object of the present invention is to provide a novel fiber-reinforced epoxy resin material having improved strength. The fiber-reinforced epoxy resin material of the present invention comprises a cured product of an epoxy resin composition and a reinforcing fiber, wherein the epoxy resin composition comprises a novolac type epoxy resin as an epoxy resin component, and the cured product of the epoxy resin composition has a swelling ratio in a range from 20 mass % to 44 mass % in methyl ethyl ketone.

Abstract: An object of the present invention is to provide a golf ball having a high resilience with a high spin rate on the approach shots. The present invention provides a golf ball comprising a constituting member that is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition satisfying properties of a rebound resilience of 54% or more and a shear loss modulus G? of 5.03×106 Pa or less when measured at the conditions of the temperature of 0° C., the oscillation frequency of 10 Hz, and in a shear mode using a dynamic viscoelasticity measuring apparatus.

Abstract: The present invention provides resin compositions for golf balls which have excellent flexibility, fluidity, and resilience, and golf balls formed from the resin compositions. The present invention relates to a resin composition for golf balls including a polymer that contains a diene polymer moiety and a carboxylic acid-based moiety wherein carboxyl groups derived from the carboxylic acid-based moiety are neutralized.

Abstract: An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The present invention provides a golf ball resin composition having the spin-lattice relaxation time (T1) of 13C nucleus measured by a High resolution solid state carbon nuclear magnetic resonance (NMR) method of 7.3 seconds or shorter.

Abstract: The present invention provides a golf ball comprising a spherical core and at least one cover layer covering the spherical core, wherein the cover is formed from a polyurethane composition containing a polyurethane elastomer as a resin component, the polyurethane composition satisfying properties of rebound resilience of 54% or more and a shear loss modulus G? of 5.03×106 Pa or less when measured in a shear mode using a dynamic viscoelasticity measuring apparatus at the conditions of the temperature of 0° C., and the oscillation frequency of 10 Hz, and the spherical core has a hardness distribution that R2 of a linear approximate curve determined by a least-squares method is 0.95 or more, when plotting JIS-C hardness measured at a center, a surface and at intervals of 2.5 mm from the center of the spherical core, versus distances from the center of the spherical core.

Abstract: An object of the present invention is to provide a golf ball which travels a great distance on the driver shots and stops quickly on the green on the approach shots. The present invention is directed to a golf ball material having a shear loss modulus G? of 2.11×107 Pa or less, and a ratio (E?/G?) of a tensile loss modulus E? to the shear loss modulus G? of 1.78 or more, when measuring the shear loss modulus G? in a shear mode and the tensile loss modulus E? in a tensile mode at conditions of a temperature of 0° C., oscillation frequency of 10 Hz using a dynamic viscoelasticity measuring apparatus.

Abstract: The present invention provides a resin composition for golf balls that is excellent in resilience, flexibility, and fluidity. The present invention also provides a golf ball excellent in resilience, shot feeling, and productivity. The present invention includes a resin composition for golf balls including: (A) at least one selected from the group consisting of (a-1) a bipolymer of an olefin and a C3-C8 ?,?-unsaturated carboxylic acid, (a-2) a metal ion-neutralized product of a bipolymer of an olefin and a C3-C8 ?,?-unsaturated carboxylic acid, (a-3) a terpolymer of an olefin, a C3-C8 ?,?-unsaturated carboxylic acid, and an ?,?-unsaturated carboxylic acid ester, and (a-4) a metal ion-neutralized product of a terpolymer of an olefin, a C3-C8 ?,?-unsaturated carboxylic acid, and an ?,?-unsaturated carboxylic acid ester; (B) a compound containing an unsaturated hydrocarbon chain, a cationic moiety, and an anionic moiety in its molecule; and (C) an unsaturated fatty acid.