Abstract: A solid golf ball includes a cover which is mainly formed from a resin blend of (a) 50-90% by weight of a salt of an ethylene-unsaturated carboxylic acid copolymer having an unsaturated carboxylic acid content of 10 to 20% by weight wherein at least 20 mol % of the carboxyl group is neutralized with a metal ion and (b) 50-10% by weight of an ethylene-unsaturated carboxylate-unsaturated carboxylic acid terpolymer having an unsaturated carboxylate content of 12 to 45% by weight and an unsaturated carboxylic acid content of 5.5 to 10% by weight. The cover has a hardness of 60 to 80 on JIS C hardness scale. The golf ball has many advantages including a pleasant feel, ease of spin, ease of control, high repulsion and resistance to peeling.

Abstract: Disclosed is a golf ball including a metallic layer disposed between an inner core and an outer core. The distance between the center of the inner core and the inner surface of the metallic layer is not greater than 15 mm, and the weight of the metallic layer is 0.2 g to 4.0 g. The metallic layer is preferably formed from nickel and through plating. The moment of inertia of the golf ball is reduced without impairing physical properties of a core rubber. The golf ball exhibit an excellent spin motion while maintaining good resilience.

Abstract: The disclosed invention provides novel golf ball compositions which contain olefinic based ionomers and non-ionic olefinic copolymers produced by use of metallocene catalysts. These compositions exhibit improved mechanical properties such as tensile and flexural properties, and can be foamed or unfoamed. Golf balls that employ at least one layer of these blends in any of the golf ball cover, core, or a mantle situated between the cover and the core provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.

Abstract: A golf ball having improved driving characteristics includes a hard, hollow sphere surrounded by an outer cover. A second layer may be disposed between the sphere and the outer cover. The hollow sphere is made from a hard material such as a metal, metal alloy, or intermetallic material and may be solid, perforated or porous. The second layer surrounding the sphere is generally made of a natural rubber or synthetic polymer or a combination of each which is surrounded by an outer cover made of an ionomer, urethane or balata. The hard sphere preferably contains a gas. A golf ball of this construction has improved performance characteristics such as low spin rate and further distance.

Abstract: The invention provides novel compositions and golf balls formed from those compositions. The compositions generally include a cured blend of an elastomer, a peroxide polymerization agent, a co-agent, and an unsaturated polycarboxylic acid. More particularly, the cured composition includes a cured blend of cis 1,4 polybutadiene, dicumyl peroxide, zinc diacrylate, and fumaric acid. One piece golf balls formed of these compositions have improved durability.

Abstract: A solid golf ball comprising a solid core and a cover has a multiplicity of dimples in its surface. The core undergoes a distortion of 2.8-4.0 mm under a load of 100 kg. The distortion (mm) of the core under a load of 100 kg divided by the distortion (mm) of the ball under a load of 100 kg is 1.0-1.3. The cover has a gage of 1.4-1.9 mm and a Shore D hardness of 53-60. Dimples of at least three types having different diameters are formed in the cover surface in a total number of 390-450. The diameter/depth ratio of each dimple is from 18/1 to 27/1. The volume of a dimple divided by the volume of a cylinder whose diameter and height correspond to the diameter and depth of the dimple, respectively, is 0.390-0.550. The golf ball is improved in flight distance, hitting feel and spin and will cover a distance even when hit at low head speeds.

Abstract: Disclosed is a golf ball having excellent shot feel, control properties as well as satisfactory flight performance and cut resistance. The golf ball of the present invention has a core and a cover for covering the core, wherein the cover has a stiffness modulus of 100 to 250 MPa, and is prepared from a resin composition comprising, as a base resin, a mixture of the following resin (A) and resin (B) in a weight ratio of 60:40 to 90:10:resin (A): an ionomer resin (i) obtained by neutralizing with metal ion at least a part of carboxyl groups in a copolymer of ethylene and an .alpha., .beta.-unsaturated carboxylic acid, or a mixture of the ionomer resin (i) and an ionomer resin (ii) obtained by neutralizing with metal ion at least a part of carboxyl groups in a terpolymer of ethylene, an .alpha., .beta.-unsaturated carboxylic acid and an .alpha., .beta.

Abstract: The invention provides a golf ball comprising a solid core, an intermediate layer, and a cover. The cover is formed of a diamine complex ionomer resin having a flexural rigidity of 340-410 MPa. The intermediate layer is formed of an ionomer resin or non-ionomer thermoplastic elastomer having a flexural rigidity of 20-350 MPa. The hardness of the ball is adjusted to a distortion of 2.6-4.5 mm under a load of 100 kg.

Abstract: A golf ball comprising:a molded core; anda cover having a Shore D hardness of at least 65, wherein the cover is comprised of at least one high acid ionomer resin comprising a copolymer of greater than 16% by weight of an alpha, beta-unsaturated carboxylic, acid, and an alpha-olefin of which about 10% to about 90% of the carboxyl groups of the copolymer are neutralizer with a metal cation;wherein the low spin golf ball has a Riehle compression of 47 or greater and a spin rate of not greater than 6,933 revolutions per minute (r.p.m.) when struck with a No. 9 iron at a head speed of 105 feet per second and a launch angle of 26 to 34 degrees.

Abstract: A multi-layer golf ball comprising a core, a cover layer and a mantle layer disposed between the core and the cover. The cover layer consists essentially of at least a first and a second ionomer resin. The first resin is a copolymer of 16 to 35% by weight of an alpha, beta-unsaturated carboxylic acid and 84 to 65% by weight of an olefin, wherein about 10 to about 90% of the carboxyl groups of the copolymer are neutralized with a metal ion. The second resin is a terpolymer of 9 to 12% by weight of an alpha, beta-unsaturated carboxylic acid, 1 to 50% by weight n-alkyl acrylate or methacrylate and 38 to 90% by weight of an olefin, wherein about 10 to about 90% of the carboxyl groups of the terpolymer are neutralized with a metal ion. The mantle layer comprises a thermoplastic material, said thermoplastic material consisting essentially of polyetherester block copolymer.

Abstract: The present invention provides a golf ball having excellent controllability at the time of approach and excellent shot feel, wherein spin is easily put on. A cover of the golf ball is composed of a mixture of specific three ionomer resins (1), (2) and (3), wherein the total amount of the resin (1) and resin (2) is not less than 85% by weight and the amount of the resin (3) is not more than 15% by weight in the mixture as a main component, and wherein the amount of the resin (1) is 30 to 82% by weight and the amount of the resin (2) is 3 to 55% by weight in the total of the resin (1) and resin (2) and a stiffness of the cover composition is 1,000 to 2,000 kg/cm.sup.2.

Abstract: A golf ball having a core and/or an intermediate layer comprising a functionalized fluoropolymer wherein the fluoropolymer may be a perfluoropolymer that is sulfonated or carboxylated or a derivative thereof. The fluoropolymer material may be blended with conventional materials employed to form golf ball cores, intermediate layers, and/or covers.

Abstract: A solid golf ball with core and cover covering the said core, except outer cover, made in compositions of a mixture of .alpha.,.beta.-ethylenical unsaturated carboxylic acid and fatty acid bismuth salt in amounts of 3-25 and 5-50 parts by weight respectively per 100 parts by weight of the base resins of the said golf ball, which has a good spin property by a softness and the carry can be extended in comparison with other golf balls made in a common composition. Since it can be applied selectively to each part, it is possible to make the golf balls with various properties that may give a satisfaction to all sorts of golfers.

Abstract: The present invention provides a golf ball having excellent shot feel, controllability and durability as well as satisfactory flight performance. A cover of the golf ball is composed of a mixture of specific three resins (1), (2) and (3), wherein the total amount of the resin (1) and resin (2) is 60 to 83% by weight and the amount of the resin (3) is 17 to 40% by weight in the mixture as a main component, and wherein the amount of the resin (1) is 33 to 80% by weight and the amount of the resin (2) is 3 to 50% by weight in the total of the resin (1) and resin (2) and a stiffness of the cover composition is 1000 to 2000 kg/cm.sup.2.

Abstract: A golf ball having a cover is provided. The cover is formed of a cover stock comprising a thermoplastic resin or elastomer and fibrous aluminum borate whiskers. The cover is durably resistant to damages by iron shots.

Abstract: A golf ball has a core which includes a titanate coupling agent. The core comprises rubber and about 0.2 to 5.0 phr of titanate coupling agent. The titanate coupling agent may be selected from the class consisting of monoalkoxy titanates and neoalkoxy titanates.

Abstract: The present invention provides a solid golf ball wherein rebound characteristics and shot feel at the time of hitting are improved without adversely affecting satisfactory flight distance and durability as a feature of the solid golf ball.Disclosed is a solid golf ball comprising a core and a cover formed on the core, the core being composed of a rubber composition containing (i) a base rubber, (ii) a metal salt of .alpha.,.beta.-unsaturated carboxylic acid, (iii) a co-crosslinking initiator, and (iv) a specific organosulfur compound.

Abstract: A golf ball and a method of making a golf ball, having a cover and a core, wherein the golf ball has at least one layer formed of a compatibilized blend of about 4 percent to 95 percent of at least one ionomer resin; about 95 percent to 4 percent of at least one non-ionic polymer; and about 1 to 15 phr, based on 100 parts ionomer resin and non-ionic polymer, of at least one compatibilizer of a functionalized block and graft polymers and oligomers, wherein the compatibilizer is free of any monomers containing an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and wherein at least one portion of the non-carboxylic acid compatibilizer is miscible with the at least one ionomer and at least one portion of the non-carboxylic acid compatibilizer is miscible with the at least one non-ionic polymer.

Abstract: A golf ball is provided having a solid core which is formed of a core stock comprising a thermoplastic resin or elastomer and fibrous aluminum borate whiskers. The ball is improved in restitution. Particularly, the one-piece golf ball is durably resistant to damages by iron shots.

Abstract: The present invention is directed to improved polybutadiene compositions suitable for use in molded golf ball core construction. The improved polybutadiene compositions are composed of polypropylene powder resins which have the effect of increasing the hardness of the resulting molded cores without increasing the weight upon curing, thereby allowing for a reduction in the amount of crosslinking agents utilized and increasing the amount of fillers incorporated therein. The addition of the polypropylene powder resins to the core compositions lowers the cost of the molded core, while maintaining the proper weight and compression. The present invention is also directed to golf balls produced utilizing the improved core compositions.Furthermore, the invention is directed to a method for reducing the amount of crosslinking agents utilized to formulate a core composition through the incorporation of polypropylene powder resins.

Abstract: A golf ball comprising a cover and a core, and optionally at least one intermediate layer interposed between the cover and the core, wherein the cover, the intermediate layer or both are formed from a blend comprising an oxa acid compound having the formula ##STR1## wherein R is an organic moiety selected from the group consisting of alkyl, carbocyclic, and heterocyclic groups. Additionally, the present invention is directed towards a golf ball cover and/or intermediate layer formed from a blend comprising at least two components, the first component comprising at least one oxa acid composition of Formula I, while the second component is a polyurethane, epoxy resin, polyethylene, polyamide, polyester, and an acid copolymer or its ionomer derivatives or mixtures thereof.

Abstract: The present invention provides a multi-layer structure golf ball having a thread rubber layer, which has good shot feel and attains long flight distance. The golf ball comprises a center made of a vulcanized molded article of a rubber composition, a thread rubber layer formed on the center and a cover formed on the thread rubber layer, whereinthe center has a diameter of from 35 to 38 mm and a deformation amount, formed by applying a load to the center within the range from an initial load of 130 Kg to a final load of 130 Kg, of from 3.5 to 6 mm, andwhen the deformation amount of the center is defined as deformation amount (A) and a deformation amount of the golf ball, formed by applying a load to the golf ball within the range from an initial load of 10 Kg to a final load of 130 Kg, is defined as deformation amount (B), the deformation amounts (A) and (B) meet the following equation:Deformation amount (A)-deformation amount (B)=0.5 to 3 mm.

Abstract: The golf ball composition is comprised of a core with a compression of less than about 90 and a cover made from more than about 50% of a sodium or zinc ionomer resin having a softening termonomer and a flexural modulus of less than about 10,000 psi and less than about 50% of a lithium ionomer resin. The ball has very good performance and has excellent shear resistance.

Abstract: A golf ball comprising a cover and core, wherein the core is formed from a blend comprising an oxa acid compound having the formula: ##STR1## wherein R is an organic moiety selected from the group consisting of alkyl, carbocyclic, and heterocyclic groups. Golf balls employing the present core blends exhibit a decreased compression without an adverse impact on the initial velocity of the ball.

Abstract: A method for improving the adhesive bonding of a top coat to a game ball such as a golf ball while simultaneously forming an identification stamp on the ball by (i) stamping an unfinished golf ball with a radiation curable ink and (ii) subjecting the unfinished golf ball to irradiation prior to application of a finish or top coat. Game balls so treated exhibit superior adhesion of a top coat and avoid the need for application of a primer coat between the unfinished golf ball and the outer top coat.

Abstract: Disclosed is a golf ball having good shot feel and controllability as well as satisfactory flight performance and cut resistance. The golf ball has a core and a cover for covering the core, wherein said cover has a stiffness modulus of 100 to 250 MPa and comprises a heated mixture of an ionomer resin and a glycidyl group-modified styrene-based block copolymer having a JIS-A hardness of 30 to 90 as base resin, and optionally a maleic anhydride-modified olefin copolymer.

Abstract: A golf ball comprising a solid core, and a cover enclosing the core and having a multiplicity of dimples formed therein has a diameter of 42.70.+-.0.05 mm and a specific gravity of 1.05.+-.0.05. The cover is composed mainly of an ionomer resin and has a Shore D hardness of at least 60, and the dimples satisfy the condition of 0.80.ltoreq.V.sub.R .ltoreq.1.16 wherein V.sub.R is a percent overall dimple volume given by the formula: ##EQU1## wherein Vs is a sum of the volumes of the dimple spaces each below a circular plane circumscribed by the dimple edge and R is a radius of the ball. The ball has a weight of 40.5 grams to less than 44.5 grams, and a cover thickness of 1.4 to 2.4 mm. The core undergoes a distortion of 2.4 to 4.3 mm under a load of 100 kg. Those golf players with a slow head speed can enjoy the advantages of the ball including an increased flying distance and a pleasant hitting feel.

Abstract: Disclosed is a solid golf ball having good shot feel and controllability as well as excellent flight performance and durability. The golf ball comprises a core and a cover covering the core, wherein the core has a diameter of not more than 36.7 mm, a hardness (JIS-C hardness) of 50 to 80 and the cover has a thickness of 3 to 5 mm and a hardness (Shore-D scale hardness) of 50 to 60.

Abstract: There is provided a golf ball comprising a core and a cover having a plurality of dimples thereon wherein said core has a distortion of 2.8 to 4.0 mm under a load of 100 kg, the ratio of a core distortion under a load of 100 kg divided by a ball distortion under a load of 100 kg ranges from 1.0 to 1.3, said cover has a thickness of 1.4 to 1.9 mm, and a Shore D hardness of 53 to 60, said dimples are divided into at least three kinds of dimples which have different diameters each other, each dimple has the ratio of diameter (mm) divided by depth (mm) of 18 to 27, the value of the spatial volume of each dimple below a plane defined by an edge of the dimple divided by the volume of a cylinder wherein the bottom of said cylinder is defined by said plane and the height is determined by the maximum depth of the dimple from said plane ranges from 0.390 to 0.550, and the total number of said dimples is in the range of 390 to 450.

Abstract: A solid golf ball comprising a solid core and a cover is adjusted to a weight of 40 grams to less than 45 grams and a moment of inertia of 80-90 g.multidot.cm.sup.2. By virtue of a light weight and a high of inertia, the golf ball provides improved flight performance upon hitting at a low head speed, less than 40 m/sec, offers straight travel upon putting, and is thus suitable for those golf players with a low head speed. The golf ball has a PGA compression of up to 90.

Abstract: In a two-piece solid golf ball comprising a solid core and a cover having a number of dimples, the solid core has such a distribution of hardness on a JIS-C hardness scale that a surface hardness is 70-85 degrees and a center hardness is lower than the surface hardness by 8-20 degrees, and the hardness within 5 mm inside the core surface is up to 8 degrees lower than the surface hardness. The cover has a hardness of 75-90 degrees on a JIS-C hardness scale which is higher than the surface hardness of the core by 1-15 degrees and a gage of 1.5-1.95 mm. The number of dimples is 360-450. Since the hardness distribution of the core and cover, the gage of the cover, and the number of dimples are optimized, the ball is improved in flight distance, controllability and hitting feel.

Abstract: In a solid golf ball comprising a solid core and a cover and having a weight of 41-44.5 grams, the solid core has a distortion of .delta. mm, typically 3-6 mm under a load of 100 kg and the cover has a Shore D hardness d, typically 50-65 degrees, which satisfy d.ltoreq.-4.6.times..delta.+83.4. The relationship between core hardness and cover hardness is optimized for shots at low head speeds of less than 40 m/sec.

Abstract: A golf ball comprising a molded core and a cover about the core. The core and cover have a combined weight of between 47 grams and 53 grams, a coefficient of restitution of at least substantially 0.800, and a Riehle compression between 0.037 inch and 0.045 inch.. The outside diameter of the ball is at least substantially 1.62 inches and less than 1.68 inches. The cover has a Shore D hardness of substantially 69.

Abstract: A solid golf ball having good controllability and long flight distance which utilizes a solid core and a cover covering the core, wherein the core is formed from a rubber composition comprising a polybutadiene rubber having a cis-1,4-structure content of at least 40% and either an unsaturated carboxylic acid or a metal salt thereof or both, and the cover has a thickness of 1 to 4 mm, a Shore D hardness of 55 to 64 and has 300 to 450 dimples having a diameter of 2 to 5 mm, with the dimples having a dimple area proportion of 62 to 78% and a total dimple volume of 260 to 345 mm.sub.3.

Abstract: In a solid golf ball comprising a solid core and a cover and having a weight of 41-44.5 grams, the cover has a Shore D hardness of 40-53 degrees. The relationship between core hardness and cover hardness is optimized for shots at low head speeds of less than 40 m/sec.

Abstract: A solid golf ball comprising a core and a cover wherein the core has a diameter of not more than 36.7 mm and a hardness (JIS-C hardness) in a range from 65.5 to 72 from a center to an outer surface thereof. The core is formed from a vulcanized molded material of a rubber composition comprising a base rubber, a metal salt of an unsaturated carboxylic acid, an organic peroxide, an organosulfur compound and/or metal-containing organosulfur compound and a filler. A difference between the hardness (JIS-C hardness) at the center of the core and that at any part from the center to the outer surface of the core is not greater than 5. The cover has a specific gravity of less than 1.2, a thickness of 3 to 5 mm and a hardness (Shore-D scale hardness) of 60 to 70.

Abstract: A golf ball cover is formed of a composition comprising (a) 70-95% by weight of a sodium or zinc salt of an ethylene-unsaturated carboxylic acid-unsaturated carboxylate terpolymer or a mixture thereof and (b) 30-5% by weight of a sodium or zinc salt of an ethylene-unsaturated carboxylic acid copolymer, an ethylene-unsaturated carboxylic acid-unsaturated carboxylate terpolymer or a mixture thereof, having an M.F.R. of at least 4, the composition curing into a product having a hardness of 55-80 on JIS C scale and a tensile stress at 10% distortion of 40-140 kg/cm.sup.2. The composition is easy to mold and allows for manufacture of a golf ball having improved spin properties and resistant to impact by iron and other clubs.

Abstract: A two-piece solid golf ball comprises a solid core and a cover enclosing the core and having a number of dimples in its surface. The solid core is formed of a rubber base and has a specific gravity of at least 1.00. The cover has a greater specific gravity than the core. The golf ball has an inertia moment (M) within the range given by the following expression: M.sub.DL .ltoreq.M.ltoreq.M.sub.UL wherein M.sub.UL =0.08D+84.8 and M.sub.DL =0.08D+77.8 wherein D is a Shore D hardness of the cover, the dimples occupy at least 60% of the ball surface, and V.sub.0 is in the range of 0.4 to 0.65. V.sub.0 is the ratio of the volume of the dimple space below a plane circumscribed by the dimple edge to the volume of a cylinder whose bottom is the plane and whose height is the maximum depth of the dimple measured from the bottom. The ball is improved in flight distance, controllability, roll and straight travel upon putting.

Abstract: The present invention provides a solid golf ball which is superior in shot feel and attains long flight distance. The solid golf ball comprises a core and a cover covering the core, wherein the core is prepared by vulcanizing a rubber composition comprising a base rubber obtained by mixing silicone rubber and a diene rubber under conditions wherein crosslinking of the diene rubber does not occur but crosslinking of the silicone rubber does occur, and wherein the mixing ratio of silicone rubber to the diene rubber is within the range of 5:95 to 45:55 by weight.

Abstract: The present invention provides a golf ball which exhibits a soft hit feeling and a high impact resilience. The golf ball comprises a core made of an elastomer and a cover covering said core wherein said cover is made of a thermoplastic material comprising a rubber powder and a thermoplastic elastomer, said rubber powder being present in an amount of 5 to 40 parts by weight based on 100 parts by weight of said thermoplastic elastomer.

Abstract: The invention provides golf balls formed from the reaction product of compositions comprising an ester grafted hydrogenated nitrile butadiene rubber such as zinc dimethacrylate grafted hydrogenated nitrile butadiene rubber elastomer. The compositions may further include polybutadiene rubber. Balls made of these compositions are especially suited for use in restricted land spaces such as driving ranges.

Abstract: A golf ball, a golf ball core and a method for making a golf ball and a golf ball core, using an admixture of polybutadiene, a zinc diacrylate cross-linker, and a calcium oxide that is substantially free of zinc oxide. When zinc oxide, typically used in golf ball cores, is eliminated or at least substantially reduced from a golf ball core composition, and calcium oxide is added, the golf balls and golf ball cores formed from such an admixture exhibit reduced PGA compression when compared to cores and balls containing zinc oxide, while maintaining the initial velocity of the standard higher compression cores and balls.

Abstract: A golf ball cover is formed of a composition comprising (a) 70-95% by weight of a sodium or zinc salt of an ethylene-unsaturated carboxylic acid-unsaturated carboxylate terpolymer or a mixture thereof and (b) 30-5% by weight of a sodium or zinc salt of an ethylene-unsaturated carboxylic acid copolymer, an ethylene-unsaturated carboxylic acid-unsaturated carboxylate terpolymer or a mixture thereof, having an M.F.R. of at least 4, the composition curing into a product having a hardness of 55-80 on JIS C scale and a tensile stress at 10% distortion of 40-140 kg/cm.sup.2. The composition is easy to mold and allows for manufacture of a golf ball having improved spin properties and resistant to impact by iron and other clubs.

Abstract: The disclosed invention provides novel golf ball compositions which contain olefinic based ionomers and non-ionic olefinic copolymers produced by use of metallocene catalysts. These compositions exhibit improved mechanical properties such as tensile and flexural properties. Golf balls which employ these blends provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.

Abstract: Novel, soft, low modulus ethylene copolymer ionomer compositions containing an acrylate softening monomer, neutralized with magnesium or lithium ions possess a higher level of resilience at a given level of PGA Compressibility than known ionomers. The advantage is maintained in certain blend compositions with harder ionomers for blends having a neat-sphere PGA Compression below about 155. Both unblended and blended compositions will be useful as golf balls and components of golf balls, for one-piece balls, centers, cores and covers of golf balls.

Abstract: A golf ball having a covering or coating consisting in whole or in part of a sulfonated or carboxylated fluoropolymer wherein the fluoropolymer comprises 1-100% of the covering or coating. The fluoropolymer may be blended with conventional golf ball cover or coating materials. A method of enhancing the cut resistance, abrasion resistance, and durability of a golf ball comprises the steps of: a) forming a golf ball core; and b) forming a cover around said core by either compression molding preformed half-shells of cover stock material comprising of a sulfonated or carboxylated fluoropolymer about said core or by injection molding cover stock material comprising of a sulfonated or carboxylated fluoropolymer around said core. Another method of enhancing the cut resistance, abrasion resistance, and durability of a golf ball in accordance comprises coating the golf ball with a sulfonated or carboxylated fluoropolymer.

Abstract: A multi-piece solid golf ball comprises a core having a structure consisting of at least two layers and a cover on the core consisting of outer and inner cover layers. The outer cover layer has a Shore D hardness of 40-60 degrees. The inner cover layer has a Shore D hardness of up to 53 degrees and lower than that of the outer cover layer. The ball's carry is comparable to conventional solid golf balls and spin receptivity is approximate to wound golf balls while the ball is durable and offers pleasant feel.

Abstract: The present invention provides a golf ball which does not cause poor impact resilience but provides long distance carry as well as good hit feeling, and keeps controllability nearly similar to balata covered thread wound golf balls. The present invention provides a golf ball which comprises a core and a cover for covering the core, wherein the cover comprises, as base component, a mixture of a sulfonate-type ionomer of which a polymer chain contains an elastomeric portion having rubber resilience and has a sulfonic group neutralized by a metallic ion, and a carboxylate type ionomer which is a copolymer of at least .alpha.-olefin and .alpha.,.beta.-unsaturated carboxylic acid of which a carboxyl group is neutralized by a metallic ion.

Abstract: A system and method for locating lost golf balls is taught. The system includes a special golf ball with an octant corner reflector resident within the center of the golf ball, as well as a convenient flashlight sized radar transmitter and receiver. The method teaches the use of such a portable handheld radar transmitter and receiver to sweep a golf course for evidence of an echo from the special golf ball with a resident reflector.

Abstract: Disclosed is a golf ball having excellent shot feel, control properties as well as satisfactory flight performance and cut resistance. The golf ball has a core and a cover covering the core wherein the cover has a stiffness modulus of 100 to 250 MPa and comprises a base resin and an additive, and the base resin mainly contains a mixture of specific resins (A) and (B) in a weight ratio of 60:40 to 90:10(A) is an ionomer resin(B) is a styrene/carboxylic and copolymer.