Abstract: Disclosed herein are golf products, such as golf balls and/or components thereof, including the product of a fast-chemical-reaction mixture comprising a polyol and an isocyanate. The component is formed by reaction injection molding the reaction mixture. In the reaction mixture, the stoichiometry of the reactants is imbalanced.

Abstract: The present invention relates to a golf ball having a ball component made of a material molded under heat from a rubber composition which includes: (A) at least 1 part by weight but less than 30 parts by weight of a modified polybutadiene which is obtained by a modification reaction wherein a polybutadiene having a vinyl content of from 0 to 2%, a cis-1,4 bond content of at least 80% and an active end is modified at the active end with at least one type of alkoxysilane compound, and which has a Mooney viscosity of less than 40, and (B) at least 70 parts by weight of a diene rubber other than ingredient A. The rubber composition additionally includes the following per 100 parts by weight of ingredients A and B combined: (C) from 10 to 50 parts by weight of an unsaturated carboxylic acid and/or a metal salt thereof, (D) from 5 to 80 parts by weight of an inorganic filler, and (E) from 0.1 to 10 parts by weight of an organic peroxide.

Abstract: The present invention provides a golf ball having a resilient core made of rubber and a cover of one or more layer enclosing the core, wherein, letting V be the initial velocity (m/s) of the ball as measured by a method set forth in the Rules of Golf using an initial velocity measuring apparatus of the same type as the USGA drum rotation-type initial velocity instrument and letting E be the deflection (mm) of the ball when subjected to loading from an initial load state of 98 N (10 kgf) to a final load of 1.275 N (130 kgf), the value of V/E is at most 19. The golf ball has a good feel on impact and an excellent flight performance when hit with an iron.

Abstract: The present invention is directed to a golf ball having at least one layer which includes a polymer composition containing at least 50 wt % of an acid polymer and at least 0.5 wt % of a plasticizer selected from the group consisting of alkylamines, alkanol amines, and fatty acid amines, wherein the weight percentages are based on the total polymeric weight of the polymer composition. At least 70% of the acid groups of the acid polymer are neutralized by a cation source or a metal salt thereof.

Abstract: Disclosed herein are golf products, such as golf balls and/or components thereof, including the product of a fast-chemical-reaction mixture comprising a polyol and an isocyanate. The component is formed by reaction injection molding the reaction mixture. In the reaction mixture, the stoichiometry of the reactants is imbalanced.

Abstract: Golf balls for use with a system for finding golf balls and methods for making such golf balls. In the case of one exemplary golf ball, the ball includes a shell, a core material and a tag having a diode which is coupled to an antenna which has at least a portion formed from an elastic conductive material, such as an elastic conductive ink. The core material may include a void for receiving at least part of the diode. Other golf balls are described and methods for making balls are also described.

Abstract: Golf ball 2 of the present invention has a group 4 of multiple marks which are visible at one view. This group 4 of marks includes a target mark t consisting of single or multiple marks provided along one great circle, and an inclined mark k which appears to be inclined with respect to this target mark t. The inclined mark k may be provided as a linear mark which appears to be inclined with respect to the target mark t. The group of marks may include a target mark t consisting of single or multiple marks provided along one great circle, and a side mark s provided on the side of this target mark t. This side mark s preferably has a dot shape. The group of marks may include a target mark t consisting of single or multiple marks provided along one great circle, and an accompanied mark h provided on the same great circle on which the target mark t is provided.

Abstract: The present invention relates to a smart golf ball comprised of one or more mantle layers juxtaposed between an inner core and outer cover, where the core, the mantle layer(s), and/or the cover are further comprised of a ferrofluid, a magnetorheological fluid, an inverse magnetorheological fluid, and/or a magnetorheological elastomer, in any of its construction. These nano-engineered materials make possible a golf ball with heretofore-unprecedented levels of adaptive play.

Abstract: Golf balls having an outermost layer, which outermost layer has been subjected to impregnation treatment with an isocyanate and/or isothiocyanate-containing olefin compound but has not been topcoated, exhibit at least one improved golf ball attribute, such as scuff resistance or spin performance, compared with similar golf balls that have not been impregnation treated.

Abstract: A golf ball having a polymer layer that has been subjected to impregnation treatment with an isocyanate and/or isothiocyanate-containing olefin compound exhibits at least one improved golf ball attribute, such as scuff resistance or spin performance, compared with an original golf ball that has not been treated by impregnation.

Abstract: The present invention provides high moment of inertia golf balls comprising a low specific gravity core layer formed from a moisture resistant composition. The moisture resistant composition has a moisture vapor transmission rate (MVTR) of 12.5 g·mil/100 in2/day or less and comprises a highly neutralized acid polymer. Golf balls of the invention have a moment of inertia of 85 g·cm2 or greater.

Abstract: The object of the present invention is to provide a golf ball having a paint film which is obtained from an environment-friendly aqueous paint and is excellent in the impact-resistance and the wear-resistance. The present invention provides a golf ball having a paint film on a surface of a golf ball body, wherein the paint film is obtained by curing a paint composition comprising an aqueous polyol having a carboxyl group, an aqueous polycarbodiimide, and an aqueous polyisocyanate.

Abstract: The present invention provides a golf ball having a core and a cover of one or more layer, wherein the core is made of a material obtained by molding under heat a rubber composition which includes (a) a base rubber containing polybutadiene having a stress relaxation time (T80) of 3.5 or less, (b) an unsaturated carboxylic acid and/or a metal salt thereof, and (c) an organic peroxide, and wherein at least one layer of the cover is made of a material obtained by molding a mixture containing as the essential ingredients (A) a metal ion neutralized olefin-unsaturated carboxylic acid random copolymer having a Shore D hardness of at least 60, (B) an unsaturated fatty acid, and (C) a basic inorganic metal compound capable of neutralizing acid groups in components A and B. The golf ball has a good rebound, a good feel on impact, and excellent scuff resistance.

Abstract: The invention provides a golf ball composed of, at least in part, a molded and crosslinked material obtained from a rubber composition made of a base rubber, a filler, an organic peroxide, an ?,?-unsaturated carboxylic acid and/or metal salt thereof, and a copper salt of a saturated or unsaturated fatty acid. The molded rubber composition has a very high rebound, and is thus useful as a golf ball core for achieving an excellent flight performance.

Abstract: Disclosed herein are golf products, such as golf balls and/or components thereof, including the product of a fast-chemical-reaction mixture comprising a polyol and an isocyanate. The component is formed by reaction injection molding the reaction mixture. In the reaction mixture, the stoichiometry of the reactants is imbalanced.

Abstract: A method, system and golf ball are therefore provided in accordance with embodiments of the present invention in order to determine the spin of a golf ball, such as the side spin and/or back spin, in order to facilitate the evaluation of a putt. In one embodiment, a system includes a golf ball and an offboard display device. The golf ball may include a golf ball body, a motion sensor disposed within the golf ball body and configured to measure acceleration of the golf ball along each of three mutually perpendicular axis, and a transmitter disposed within the golf ball body configured to transmit data representative of spin of the golf ball. In turn, the display device may include a receiver configured to receive data representative of the spin of the golf ball from transmitter and a display configured to provide a representation of a measure of the spin of the golf ball.

Abstract: The present invention relates to a golf ball having a ball component made of a material molded under heat from a rubber composition which includes: (A) from 1 to 50 parts by weight of a modified polybutadiene obtained by a modification reaction wherein a polybutadiene having a vinyl content of from 0 to 2%, a cis-1,4 bond content of at least 80% and an active end is modified at the active end with at least one type of alkoxysilane compound, and (B) at least 50 parts by weight of polybutadiene synthesized using a rare-earth catalyst and having a stress relaxation time (T80) of less than 4.0. The rubber composition additionally includes the following per 100 parts by weight of ingredients A and B combined: (C) from 10 to 50 parts by weight of an unsaturated carboxylic acid and/or a metal salt thereof, (D) from 5 to 80 parts by weight of an inorganic filler, and (E) from 0.1 to 10 parts by weight of an organic peroxide.

Abstract: A process for removing the coating layers from finished golf balls is disclosed herein. The process involves soaking the golf balls in a removal solution and then subjecting the golf balls to ultrasonic treatment in order to remove a coating layer, an indicia and/or a paint layer.

Abstract: A high impact game ball with a core structure founded on a spherical member, a spherical casing concentrically disposed relative to the spherical member, at least one surface deviation disposed relative to the spherical member of the core structure, and at least one corresponding surface deviation disposed relative to the spherical casing in a mating relationship with the at least one surface deviation of the spherical member. A switching arrangement can be embedded in the spherical member for causing a response to be exhibited based on the occurrence of an activation condition, such as an impact or a remote activation signal. A plurality of positioning stays can project from the spherical member to ensure a concentric relationship relative to the spherical casing.

Abstract: Disclosed embodiments concern using at least one triazine, typically an amine or polyamine triazine (referred to as amino triazines), in combination with at least one ionomer or ionomer precursor to form compositions useful for making sporting equipment, such as golf ball components. The ionomer or ionomer precursor typically includes plural acid functional groups, such as carboxyl or carboxylate groups, that react or form salts with the amino triazine. Specific examples, without limitation, of suitable amino triazines include guanamine, 6-methyl-1,3,5-triazine-2,4-diamine (acetoguanamine), 6-nonyl-1,3,5-triazine-2,4-diamine (nonylguanamine), 6-phenyl-1,3,5-triazine-2,4-diamine (benzoguanamine) and 2,4,6-triamino-triazine (melamine).

Abstract: Provided as ink for a golf ball for use in marking a golf ball is ink for a golf ball including an ink resin having a predetermined hydroxyl value and block isocyanate. When marking a golf ball by using the ink of the present invention, a hydroxyl group in the ink resin in an ink layer and an isocyanate group derived from the block isocyanate react with each other to increase hardness of the ink layer, thereby improving abrasion resistance of the marking. In addition, the isocyanate group derived from the block isocyanate and a functional group of an ionomer resin on the ball surface react with each other to improve adhesiveness of marking to the ball surface. Furthermore, the hydroxyl group of the ink resin and an isocyanate group in a urethane top coat layer react with each other to increase strength of the ink layer, thereby improving hitting resistance of the marking.

Abstract: The invention provides a golf ball material composed of (i) a non-ionomeric thermoplastic resin, (ii) an ionomeric resin and/or an acid-containing polymer which is the base resin of an ionomeric resin, and (iii) at least one compound selected from among N,N-dialkylaminoalkyl(meth)acrylamide, N,N-dialkylaminoalkyl(meth)acrylate and derivatives thereof. Methods for preparing such a material, and a golf ball which includes as a component therein a molded part made of the golf ball material are also provided. The golf ball material has a good thermal stability, flow and processability, and can thus be used to obtain high-performance golf balls having an excellent rebound resilience, an outstanding durability and a good flexibility.

Abstract: A golf stroke alignment aid of particular use during putting, comprises a rectangular marker on the ball (2) and one or more similar markers on the club (2a, 2b, 2c) so as to be visible by the player from above. Each rectangular marker has a forward line of increased thickness (4, 4a, 4b, 4c) relative to that of other lines defining the rectangle. By aligning the marker(s) on the club with that on the ball improved visual alignment and visual memorising is obtained to assist in squaring the club face at impact.

Abstract: A rubber composition comprises a rubber component. The rubber component contains (A) 1-70 weight parts of polybutadiene rubber having a Mooney viscosity (ML) of 35-50 and composed of (a) 1-9 weight % of a boiled n-hexane insoluble fraction having a melting point of 180° C. or higher and (b) 99-91 weight % of a boiled n-hexane soluble fraction. The rubber component also contains (B) 99-30 weight parts of diene-based rubber other than (A). A crosslinking coagent (C) is mixed in the rubber component.

Abstract: Disclosed herein are golf products, such as golf balls and/or components thereof, including the product of a fast-chemical-reaction mixture comprising a polyol and an isocyanate. The component is formed by reaction injection molding the reaction mixture. In the reaction mixture, the stoichiometry of the reactants is imbalanced.

Abstract: A polyurea-based curable coating for use with sports equipment, such as golf balls, golf shoes, golf clubs, footballs, billiard balls, baseballs, and the like, of which the coating may be cured over time, with heat, or a combination thereof, providing enhanced adhesion to equipment surfaces, improved abrasion resistance, and increased water resistance.

Abstract: The present invention provides a golf ball material which is a thermoplastic ionomer blend composition of an acid-containing ethylene-based terpolymer having a weight-average molecular weight Mw of at least about 100,000, an acid-containing ethylene-based copolymer and/or terpolymer having a Mw of about 1,500 to about 95,000, and a low-molecular-weight acid-containing compound having a molecular weight of up to about 1,000, at least some portion of which composition is neutralized. The golf ball material is soft and resilient, and has a good durability and improved moldability.

Abstract: Based on a surface shape appearing at a predetermined point moment by moment during rotation of a golf ball having numerous dimples on its surface, a data constellation regarding a parameter dependent on a surface shape of the golf ball is calculated. Preferably, the parameter is a distance between an axis of the rotation and the surface of the golf ball. Another preferable parameter is a volume of space between a surface of a phantom sphere and the surface of the golf ball. Based on a maximum value and a minimum value of the data constellation, a fluctuation range is calculated. By dividing the fluctuation range by a total volume of the dimples, an evaluation value is calculated. This value is calculated for each of PH rotation and POP rotation.

Abstract: The invention provides a golf ball having a ball component made of a material molded under heat from a rubber composition of (a) a base rubber which includes a polybutadiene of at least 40% cis-1,4 structure, (b) an unsaturated carboxylic acid and/or a metal salt thereof, (c) an organic peroxide, and (d) a halogenated thiophenol, and/or a metal salt thereof, which is prepared by reacting starting materials in a polar solvent then washing with water and drying. The golf ball of the invention uses as a ball component a material of exceptional resilience which is obtained by molding a rubber composition under applied heat. As a result, the ball as a whole has an excellent rebound.

Abstract: The present invention provides a golf ball having a core and a cover of one or more layer, wherein the core is made of a material obtained by molding under heat a rubber composition which includes (a) a base rubber containing polybutadiene having a stress relaxation time (T80) of 3.5 or less, (b) an unsaturated carboxylic acid and/or a metal salt thereof, and (c) an organic peroxide, and wherein at least one layer of the cover is made of a material obtained by molding a mixture composed of (A) 100 parts by weight of a base resin and (B) 1 to 40 parts by weight of a branched saturated fatty acid or a derivative thereof. The golf ball has an excellent rebound overall, a soft, pleasant feel on impact, and excellent scuff resistance. Moreover, it has an appearance with a high degree of whiteness.

Abstract: The object of the present invention is to improve the resilience and the shot feeling of the golf ball to be obtained by reducing the content of trans-1,4-bond in a golf ball using for a core a polybutadiene having a high content of cis-1,4-bond. The golf ball of the present invention has a core comprising at least one layer or more and a cover covering the core, at least one layer of the core obtained by molding a rubber composition containing (a) a base rubber containing a polybutadiene obtained by polymerizing 1,3-butadiene in the presence of a catalyst containing a metallosalen complex and aluminoxane, (b) a co-crosslinking agent, and (c) a crosslinking agent.

Abstract: A golf putting practice device and ball is provided, wherein the ball has a flat end and a friction face which allow the putting practice ball to slide across the level putting surface of the putting practice device. The specific coefficient of friction provided by the friction face of the putting practice ball reduces the speed and the distance the putting practice ball travels over a putting surface of the putting practice device. This allows a golfer to practice a complete range of putts on a conveniently sized portable device.

Abstract: This invention provides a golf ball manufacturing method to be administered subsequent treatment at a specific site on the surface of a ball molded from a golf ball-forming material. The method includes the steps of forming on the surface of the ball an identifying mark having a given positional relationship with the specific surface site; removing each ball in turn from a plurality of lined-up balls on each of which the specific surface site is located in a random position; photographing the identifying mark formed on the surface of the ball with an image processing camera; and, based on information provided by the photographed identifying mark, correcting the orientation of the ball so that the specific surface site lies at the position where the subsequent treatment will be administered. This method of manufacture enables the ball to be reliably and smoothly positioned, thus making it possible to reliably and smoothly carry out subsequent treatment such as seam line processing and marking.

Abstract: The invention provides a molded rubber material for a golf ball which is obtained by molding and vulcanizing a rubber composition that includes a portion of a master batch prepared by mixing together a synthetic rubber, an unsaturated carboxylic acid metal salt and a higher fatty acid or metal salt thereof, and includes also a diene rubber and an organic peroxide, wherein the master batch is prepared at a maximum temperature attained during preparation of above 110° C. Also disclosed are a method of producing such a molded rubber material, and a golf ball in which such a molded rubber material is used as a component of the ball. Use of the molded rubber material as a golf ball core enables a good core hardness under load and a good core resilience to be achieved.

Abstract: The accuracy or computation speed of mechanical analysis of a golf ball using the finite element method is increased. In the mechanical analysis, a model representing the golf ball is prepared on a computer, and computation is made by the finite element method using elements and nodes. At this time, the elements are made solid elements of hexahedron, the aspect ratio of the shape of each element is set so as to be not lower than 1.0 and not substantially higher than 6.5, and nodes are provided on the sides and at the vertexes of the hexahedron of element.

Abstract: Disclosed herein are golf products, such as golf balls and/or components thereof, including the product of a fast-chemical-reaction mixture comprising a polyol and an isocyanate. The component is formed by reaction injection molding the reaction mixture. In the reaction mixture, the stoichiometry of the reactants is imbalanced.

Abstract: The object of the present invention is to improve the resilience and the durability of the golf ball to be obtained by reducing the content of trans-1,4-bond in a one-piece golf ball using a polybutadiene having a high content of cis-1,4-bond. The one-piece golf ball of the present invention is obtained by molding a rubber composition containing (a) a base rubber containing a polydiene obtained by polymerizing diene in the presence of a catalyst containing a metallosalen complex and aluminoxane, (b) a co-crosslinking agent, and (c) a crosslinking agent.

Abstract: A golf ball having an indicia produced by ink jet printing is disclosed. An ink composition containing a coloring agent and a resin is dispensed on a transfer medium, using an ink jet printer, to form an indicia. The indicia is transferred from the transfer medium to the dimpled surface of a golf ball. In another form of the invention, an indicia is applied directly to a golf ball, without a transfer medium. In this method, an indicia receiving layer is applied on at least a portion of the golf ball surface, then the indicia is printed directly on the indicia receiving layer using an ink jet printer. The indicia on the golf ball has an impact resistance suitable for use in competitive play.

Abstract: A light emitting golf ball is provided that includes a spherical housing, a fixing container, a light emitting device, a first fitting portion, and a second fitting portion. The light emitting device is disposed in the fixing container and includes an acoustic wave sensor, a controller, one or more light emitting elements and an electricity supplier. When the acoustic wave sensor receives an external acoustic wave signal higher than a predetermined value, it sends out an activating signal to the controller so that at least one light emitting element emits light. This invention is irrelevant to the hitting direction. It has an extremely low defective rate. Furthermore, the product life can be prolonged.

Abstract: The present invention relates to a method of manufacturing a painted golf ball with reduced static electricity on the surface of the golf ball prior to painting to allow even painting to produce a ball without asperity on the surface, characterized by irradiating the surface of the golf ball, which is positively charged before painting, with negative ions directly before painting. Preferably, the surface of the golf ball after the irradiation with negative ions and prior to the painting is negatively charged, and particularly, the surface of the golf ball after the irradiation with negative ions prior to the painting is preferably charged at ?0.1 to ?40 kV.

Abstract: Disclosed herein is a novel thermoplastic material and a golf ball utilizing the thermoplastic material. The golf ball (10) preferably comprises a core (12), a cover (16) and optionally a boundary layer (14). At least one of the core (12), cover (16) or boundary layer (14) of the golf ball (10) comprises the thermoplastic material. The thermoplastic material comprises a partially to highly neutralized blend of copolymers additionally comprising a fatty acid or fatty acid salt. The golf ball component of the invention has soft feel and resilience that is maintained or improved.

Abstract: A golf ball material composed of (A) an olefin-containing thermoplastic polymer having an acid content of at least 0.5 wt % but less than 5.0 wt %, (B) a resin composition which includes one or more selected from the group consisting of diene polymers, thermoplastic polymers and thermoset polymers, and (C) an oxygen-containing inorganic metal compound has a good thermal stability, flow and processability, making it suitable for injection molding. The golf ball material is ideal for the production of high-performance golf balls endowed with durability, scuff resistance and optimal hardness without a loss of rebound in the molded article.

Abstract: The present invention provides a golf ball having a core, an outermost cover layer and an intermediate layer therebetween. The core is made of a material obtained by molding under heat a rubber composition containing polybutadiene having a stress relaxation time (T80) of 3.5 or less. The intermediate layer, which is of a specific thickness, is made primarily of a resin material of a specific hardness obtained by blending together (I) a sodium ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer with (II) a magnesium ion neutralization product of an olefin-unsaturated carboxylic acid random copolymer. The outermost cover layer, which is of a specific thickness, is made primarily of a non-ionomeric resin material of a specific hardness. The golf ball has an excellent rebound, a good feel on impact, and an excellent scuff resistance.

Abstract: Golf balls with at least one component, e.g., golf ball covers, cores, and intermediate layers, formed from engineering thermoplastic vulcanizates (“ETPV”) that have improved heat resistance, abrasion resistance, and impact strength.

Abstract: A golf ball material composed of (A) an ionomer, (B) a resin composition which includes one or more selected from the group consisting of diene polymers, thermoplastic polymers and thermoset polymers, and (C) an acid group-bearing thermoplastic resin composition is prepared by melt-mixing components B and C so as to form a resin composition of components B and C, then melt-mixing this resin composition with component A while injecting water under pressure. The golf ball material has a good thermal stability, flow and processability, and can be used to produce high-performance golf balls endowed with durability, scuff resistance and optimal hardness without a loss of rebound.

Abstract: A golf ball material composed of (A) an olefin-containing thermoplastic polymer having an acid content of at least 0.5 wt % but less than 5.0 wt %, (B) a resin composition which includes one or more selected from the group consisting of diene polymers, thermoplastic polymers and thermoset polymers, and (C) an oxygen-containing inorganic metal compound has a good thermal stability, flow and processability, making it suitable for injection molding. The golf ball material is ideal for the production of high-performance golf balls endowed with durability, scuff resistance and optimal hardness without a loss of rebound in the molded article.

Abstract: The golf ball includes a core, an intermediate layer for covering the core and a cover layer for covering the intermediate layer, wherein the intermediate layer is formed of a resin composition containing a cation-treated phillosilicate and having a Shore D hardness of 56 or higher. This intermediate layer provides the golf ball excellent in ball distance at a driver shot and in controllability at an iron shot.

Abstract: The invention provides crosslinked rubber moldings for golf balls obtained by spherically molding and crosslinking a rubber composition containing a base rubber, a co-crosslinking agent and a crosslinking agent, then impregnating the crosslinked rubber molding with a rubber compounding chemical and inducing a chemical reaction. The rubber compounding chemical-impregnated crosslinked molding has a higher surface hardness than the crosslinked molding prior to impregnation. The invention also provides a method for manufacturing such crosslinked rubber moldings for golf balls. The invention enables a sufficient rise in the surface hardness of the core to be achieved, thus increasing the degree of freedom in the design of the golf ball.

Abstract: A photoluminescent, light-emitting golf ball comprises a substantially solid core with an outer shell, both formed of a light transmissive material. Photoluminescent particles are distributed within the light transmissive material. A light-emitting circuit assembly embedded within the core includes at least one battery, a control circuit coupled to the at least one battery, a plurality of light-emitting diodes coupled to the control circuit, and an impact switch electrically connected between the battery and the control circuit. The control circuit actuates the light-emitting diodes for a predetermined time period in response to an impact of the golf ball by a golf club. Actuation of the light-emitting diodes by an impact on the golf ball excites the photoluminescent particles, causing the particles to glow in excess of the predetermined time period of actuation of the light-emitting diodes.

Abstract: A golf ball has colored lines emanating from colored visual impact zones of the ball to form a useful alignment tool as well as directional indicators. The visual impact zones are located on opposite ends of the golf ball. The utility of such a colored design on the golf ball aids the golfer in seeing the ball to improve with eye-hand coordination and proper alignment of the golfer's body to the ball in order to produce a better ball striking result.