Abstract: A golf ball includes noncircular dimples having smooth bottom surfaces; a method for designing the golf ball is disclosed. A noncircular dimple DNC has a border line which is a boundary line on the surface, the boundary line formed by connecting segments at some connecting points. The segments include at least one type of line segments LS and smoothly curved segments CS. A bottom surface BS of the noncircular dimple DNC includes at least five facets formed of at least five curved reference lines RC, each connecting a reference point A and one of at least five border points B, and each being tangential, at the reference point A, to a reference plane RP inside a virtual sphere having the radius of the ball, the reference point A set on the reference plane RP, the border points B set respectively at positions on the boundary line excluding the connecting points.

Abstract: A golf ball has a cover and a core which is made as a single piece or of two or more parts (for example an inner core covered by an outer core or mantle layer). The ball has non-spherical aspects in at least some parts and may also have different specific gravities in different parts of the ball. The different shaped ball parts combined with the different specific gravities of the materials for different ball parts results in a differential between the moments of inertia of the different spin axes. The golf ball is spherical, but the inner layers are not necessarily completely spherical or symmetrical layers or parts.

Abstract: A golf ball that, in the process of spherical grinding after forming, can maintain the dimple shape and achieve the designed dimple surface occupation ratio. A mold for forming a golf ball of the present invention has at least two body parts, a cavity being formed within the mold by the joining of the at least two body parts, the body part comprising a cavity wall surface which has a spherical surface shape with the center thereof being at the center of the cavity and dimple-forming protrusions provided on the cavity wall surface, the dimple-forming protrusions being connected to the cavity wall surface at an angle of about 60 or more degrees in a region from about 3 ?m to about 20 ?m from the cavity wall surface.

Abstract: A golf ball is provided that includes a coating. The coating is designed to allow a golfer to modify or increase the tackiness of the coating. The coating changes tackiness when exposed to a soaking material. A method of determining a desirable length of soak is also disclosed.

Abstract: This disclosure relates to golf balls made from a crosslinked thermoplastic polyurethane elastomer. The crosslinked thermoplastic polyurethane elastomer includes crosslinks located in the hard segments, where the crosslinks being the reaction product of unsaturated bonds located in the hard segments as catalyzed by a free radical initiator. The crosslinks may be formed from an unsaturated diol as a chain extender. The unsaturated diol may be trimethylolpropane monoallylether (TMPME). The golf ball may include the crosslinked thermoplastic polyurethane elastomer in the cover layer, in which case the cover layer may exhibit a high degree of scuff resistance.

Abstract: An object of the present invention is to provide a golf ball having excellent scuff resistance and spin performance, and a satisfactory rebound property. The golf ball has a core 3, an intermediate layer 5 covering the core 3, an inner cover 7 covering the intermediate layer 5, and an outer cover 15 covering the inner cover 7, wherein the outer cover 15 includes a neutralized product containing an ethylene-unsaturated carboxylic acid-alkyl(meth)acrylate ternary copolymer having a weight average molecular weight (Mw) of 80,000 to 500,000 and an ethylene-acrylic acid or ethylene-methacrylic acid copolymer having a weight average molecular weight (Mw) of 2,000 to 30,000, and the inner cover 7 also includes the neutralized product.

Abstract: Compositions for golf balls that include polyurea linkages and that are crosslinked in the soft segments of the polymer backbone. In particular, the compositions of the invention, which are based on a polyurea have improved crosslink density from the crosslinking between the soft, unsaturated segments of the polymer backbone. The curative blend includes at least one isocyanate-reactive component and a free radical initiator.

Abstract: Disclosed are golf balls having soft, resilient bimodal ionomeric covers with improved softness and scuff resistance and methods for their preparation. The soft, resilient bimodal ionomeric covers comprise at least partially neutralized mixtures of carboxylate functionalized terpolymers (molecular weight between about 80,000 and 500,000) with carboxylate functionalized ethylene low copolymers (molecular weight between about 2,000 and 30,000).

Abstract: The invention provides a golf ball having a core formed by vulcanizing a rubber composition and a cover composed primarily of a polyurethane material. The rubber composition of the core includes 100 parts by weight of a base rubber, from 10 to 40 parts by weight of an unsaturated carboxylic acid or a metal salt thereof, a peroxyketal (a) and a monophenol-type antioxidant (b), the weight ratio (a)/(b) of the peroxyketal to the monophenol-type antioxidant being from 5 to 50. The ball has an excellent discoloration resistance and an outstanding distance and feel on shots taken with a middle iron.

Abstract: Described are golf balls comprising cores or intermediate layers prepared from thermoplastic compositions having coefficients of restitution equal to or greater than 0.83 and PGA compression greater than 100. Also described is a composition comprising or prepared from (a) at least one aliphatic, mono-functional organic acid having from 16 to 20 carbon atoms, wherein the organic acid is unsaturated and linear; (b) an ethylene acid copolymer consisting essentially of copolymerized comonomers of ethylene and from 18 to 24 weight % of copolymerized comonomers of at least one C3 to C8 ?,? ethylenically unsaturated carboxylic acid, based on the total weight of the ethylene acid copolymer, having a melt index from about 200 to about 600 g/10 minutes; wherein the combined acid moieties of (a) and (b) are nominally neutralized to a level from about 120% to about 200%; and optionally (c) filler.

Abstract: A method of forming golf balls with at least a portion formed from polyurethane and polyurea compositions employing a curative blend that includes a pigment, a curing agent, and a compatible freezing point depressing agent so that the curative blend has a lower freezing point than the curing agent by itself and the blend does not lose pigment dispersion upon solidification and subsequent thawing.

Abstract: Golf balls include: (a) a golf ball body having a first set of construction specifications and a first dimple pattern formed on an outer surface of the golf ball body; and (b) a coating applied to the outer surface of the golf ball body to thereby produce a coated golf ball body having an exterior surface. At least one of the outer surface of the golf ball body and the coating includes a plurality of surface roughening particles to provide increased micro surface roughness as compared to golf balls having the same set of construction specifications and the same dimple pattern but without the micro surface roughening particles. The micro surface roughening affects the aerodynamic properties of the ball.

Abstract: Embodiments of a composition useful for making sports equipment, such as golf balls, are disclosed comprising at least one polyurethane, polyurea, polymer precursor composition thereof, blocked polyurethane, blocked polyurea or blocked polymer precursor composition thereof, and an effective amount of a polyfunctional modifier. One disclosed embodiment of a method for forming a golf ball comprises providing a first composition comprising at least one polyurethane, polyurea, polymer precursor composition thereof, blocked polyurethane, blocked polyurea or blocked polymer precursor composition thereof, and an effective amount of a polyfunctional modifier. The first composition is combined with at least a second composition to make at least one component of a golf ball.

Abstract: Generally disclosed is a golf ball having a core and a cover layer. The cover layer includes areas that are hard corresponding to the dimples, and areas that are soft corresponding to the land between the dimples. The cover layer may comprise two different materials, such as polyurethane and ionomer, that are laterally adjacent to each other in the cover layer. Alternatively, the cover layer may be selectively coated with a coating material having a different hardness, such as polyurethane or ionomer. As a result of the arrangement of the hard dimples and the soft land, the golf ball achieves reduced spin, and greater distances, when struck with a larger force (such as during a dive) while also achieving increased spin, and better control, when struck with a smaller force (such as during a chip).

Abstract: In one embodiment, there is disclosed a golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a reaction product of an acidic polymer and an aminoalcohol. In another embodiment, there is disclosed a golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a polyurethane ionomer made by reacting a hydroxyl-functional acidic polymer with an isocyanate, wherein the hydroxyl-functional acidic polymer is a reaction product of an acidic polymer and an aminoalcohol. In a further embodiment, there is disclosed a golf ball comprising a core and at least one layer, wherein at least the core or the layer includes a composition made from: (a) a reaction product of an acidic polymer and an aminoalcohol; and (b) at least one additional material.

Abstract: Golf balls containing a core comprising a blend of: a) about 1 to about 49 weight percent of a polybutadiene rubber having a relatively high Mooney viscosity, and b) about 51 to about 99 weight percent of a polyalkenamer rubber having a relatively low Mooney viscosity are provided. Single or multi-layered cores may be prepared. In addition, the golf ball includes a cover that may be single or multi-layered. The cover is preferably made of polyurethanes, polyureas, or blends thereof. The polyalkenamer/polybutadiene rubber composition helps provide the ball with high resiliency along with a soft feel.

Abstract: A golf ball comprises two generally hemispherical portions joined together at a parting line and comprising dimples on respective outer surfaces thereof. The parting line comprises a repeating pattern of curved segments alternating with straight segments. The parting line crosses a geometric equator of the golf ball, and wherein the parting line intersects at least one dimple bordering the equator. A mold for producing a golf ball is also described.

Abstract: A multi-piece solid golf ball has a core, at least one intermediate layer encasing the core, and a cover of at least one layer encasing the intermediate layer. The core is formed of a base rubber, and the intermediate layer and cover are each formed of a resin material. The intermediate layer has a thickness (a) and the cover has a thickness (b) such that the ratio a/b is from 0.7 to 1.9, and the core has a diameter (c) such that the ratio c/a with the intermediate layer thickness (a) is from 23 to 38. The intermediate layer has a material hardness (Shore D) of from 42 to 76, and the cover has a material hardness (Shore D) of from 41 to 69. The ball satisfies the following relationship: cover material hardness<intermediate layer material hardness>core surface hardness, and wherein a Shore D hardness at the core surface minus a Shore D hardness at the core center is not more than 17 units. This golf ball has an improved flight performance and a good, solid feel on impact.

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: This disclosure relates to golf balls made from a crosslinked thermoplastic polyurethane elastomer. The crosslinked thermoplastic polyurethane elastomer includes crosslinks located in the hard segments, where the crosslinks being the reaction product of unsaturated bonds located in the hard segments as catalyzed by a free radical initiator. The crosslinks may be formed from an unsaturated diol as a chain extender. The unsaturated diol may be trimethylolpropane monoallylether (TMPME). The golf ball may include the crosslinked thermoplastic polyurethane elastomer in the cover layer, in which case the cover layer may exhibit a high degree of scuff resistance.

Abstract: The object of the present invention is to provide a golf ball with superior abrasion resistance and resilience. The present invention provides a golf ball of the present invention comprises a core and a cover that covers the core. The cover contains a polyurethane resin and an organically modified layered silicate, and an interlayer distance of the organically modified layered silicate measured by X-ray diffraction is in a range from 2.5 nm to 15 nm.

Abstract: This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.

Abstract: Golf balls having multi-layered covers are provided. The cover includes an inner cover layer made of an ionomer composition; an intermediate cover layer made of an aromatic polyurethane composition; and outer cover layer made of an aliphatic polyurethane composition, wherein the total thickness of the multi-layered cover is no greater than 0.110 inches. Preferably, the thickness of the inner cover layer is 0.010 to 0.050 inches; the thickness of the intermediate cover layer is 0.010 to 0.040 inches; and thickness of the outer cover layer is 0.004 to 0.020 inches. The invention also includes methods for making such multi-layered covers. The resulting ball has good light-stability, cut/shear-resistance, and impact durability.

Abstract: This invention is related to multi-layer golf balls having at least one layer containing a neutralized high acid ionomer linked to a grafted metallocene copolymer, where the golf balls exhibit improved performance characteristics and properties.

Abstract: Disclosed herein are soft and stiff compositions, i.e., compositions which have a flexural modulus that is greater than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula H?11.889 Ln(M)+42, where H is the hardness of the composition, in JIS-C, and M is the flexural modulus of the composition, in ksi; or a softness/stiffness relationship represented by the formula if M<56, then H?8.5218 Ln(M)+26.5 if M?56, then H?8.5218 Ln(M)+28.5, where H is the hardness of the composition, in Shore D, and M is the flexural modulus of the composition, in ksi.

Abstract: This disclosure relates to golf balls having a cover layer made from a crosslinked thermoplastic polyurethane elastomer. The crosslinked thermoplastic polyurethane elastomer includes crosslinks located in the hard segments, where the crosslinks being the reaction product of unsaturated bonds located in the hard segments catalyzed by a free radical initiator. The crosslinks may be formed from an unsaturated diol as a chain extender. The unsaturated diol may be trimethylolpropane monoallylether (TMPME). The cover layer may have certain properties, such as a desirable flexural modulus value and a desirable Shore D hardness value, that further contribute to the golf ball having a high degree of scuff resistance.

Abstract: The object of the present invention is to provide a golf ball having excellent durability and resilience. The present invention provides a golf ball which includes a core, and a cover covering the core. The cover contains an ionomer resin and an organically modified layered silicate. The organically modified layered silicate has an interlayer distance, measured by X-ray diffraction, in a range from 2.5 nm to 15 nm.

Abstract: A golf ball having a cover material made from a polyurethane or polyurethane/urea hybrid composition is provided. The polyurethane or polyurethane/urea composition is produced by the reaction of an isocyanate blend having an average NCO functionality in the range of 2.05 to 2.35, a polyamine compound, and amine or hydroxyl chain-extender. The resulting cover material has many advantages including improved thermal-stability, durability, toughness, and cut/tear-resistance. The preferred isocyanates in the blend include isophorone diisocyanate (“IPDI”); 1,6-hexamethylene diisocyanate (“HDI”); 4,4?-dicyclohexylmethane diisocyanate (“H12 MDI”); 4,4?-diphenylmethane diisocyanate (4,4?MDI); toluene diisocyanate (“TDI”); and homopolymers and copolymers thereof.

Abstract: A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope layer is formed of an inner envelope layer, an intermediate envelope layer and an outer envelope layer. The inner, intermediate and outer envelope layers, the intermediate layer and the cover are each formed primarily of a resin material which may be of the same or different types, and the core is formed primarily of a rubber material. The cover has a material hardness which is the same as or lower than the core center hardness. One of the inner layers has a material hardness which is higher than either or both of the cover material hardness and the average core hardness (defined as the arithmetic mean of the core surface hardness and the core center hardness).

Abstract: A multi-piece solid golf ball has a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and a cover which encases the intermediate layer and has formed on a surface thereof a plurality of dimples. The envelope layer is formed of an inner envelope layer, an intermediate envelope layer and an outer envelope layer. The inner, intermediate and outer envelope layers, the intermediate layer and the cover are each formed primarily of a resin material which may be of the same or different types, and the core is formed primarily of a rubber material. The cover has a material hardness which is higher than the core center hardness. One of the inner layers has a material hardness which is higher than either or both of the cover material hardness and the average core hardness (defined as the arithmetic mean of the core surface hardness and the core center hardness).

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: The invention provides a method for preparing a material which includes an ionomer blend composition containing a polysilsesquioxane, has a good inorganic filler dispersibility and a good moldability (mold releasability), and has an excellent scuff resistance and coefficient of restitution. The invention also provides a golf ball made using such a material. The ionomer blend composition is an ionomer-based material wherein the polysilsesquioxane and the ionomer are at least partly chemically bonded therebetween, and which has excellent properties such as coefficient of restitution and scuff resistance.

Abstract: A golf ball having an improved surface pattern is disclosed. The golf ball has one or more bands on its surface. These bands may be either channels or raised beads. The bands have variable widths and/or heights/depths, either within the same band or between bands. These bands may decrease drag, or may increase lift. These bands may be linear, or may be curved, and may or may not fully circumscribe the golf ball. These channels or ridges may also be combined with traditional or non-traditional dimples.

Abstract: An object of the present invention is to provide a golf ball which has excellent durability and wear-resistance and provides an excellent shot feeling. The present invention is directed to a golf ball comprising: a core; and a cover covering the core, wherein the cover is formed from a cover composition containing a thermoplastic polyurethane (A), a polyisocyanate (B) having at least two isocyanate groups, and a polyhydroxyether (C) as a resin component, and wherein the core has a surface hardness of 85 or smaller in JIS-C hardness.

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 a method for arranging dimples on a golf ball surface that significantly improves aerodynamic symmetry and minimizes parting line visibility by arranging the dimples in a pattern derived from at least one irregular domain generated from a regular or non-regular polyhedron. The method includes choosing control points of a polyhedron, generating an irregular domain based on those control points, packing the irregular domain with dimples, and tessellating the irregular domain to cover the surface of the golf ball. The control points include the center of a polyhedral face, a vertex of the polyhedron, a midpoint or other point on an edge of the polyhedron and others. The method ensures that the symmetry of the underlying polyhedron is preserved while eliminating great circles due to parting lines.

Abstract: A golf ball including a plurality of continuous dynamic focus patterns between 0.5 and 8 millimeters wide on the exterior surface of the golf ball, such that each continuous dynamic focus patterns circumscribes the golf ball and the center of each said continuous dynamic focus pattern coincides with the center of said golf ball. A golf ball including at least four discrete dynamic focus patterns between 0.5 and 8 millimeters across on the exterior surface of the golf ball. A golf ball including both a plurality of continuous dynamic focus patterns and at least four discrete dynamic focus patterns on the exterior surface of the golf ball.

Abstract: The object of the present invention is to provide a golf ball having excellent scuff resistance and spin performance. The present invention provides a golf ball which comprises a core and a cover covering the core. The cover contains a polyurethane as a resin component, and the polyurethane is obtained by employing a multimodal polyol having multimodality in molecular weight distribution, as a high-molecular-weight polyol component constituting the polyurethane.

Abstract: A golf ball having a cover is cast from a castable reactive aliphatic functional composition consisting essentially of: a methylene dicyclohexyl diisocyanate based prepolymer; at least one polyamine/polyamide functional component used as a backbone of the prepolymer; a free isocyanate group; and a curative. The polyamine/polyamide is formed from the condensation reaction of a polyamine and a polyacid, with the equivalent ratio of polyamine to polyacid ranges from 2:1 to 10:1, preferably the ratio is 3:1, and more preferably 2:1. It is preferable that the polyamine be a Jeffamine series D-2000. The polyacid can be chosen from acids such as maleic, adipic, azelaic or sebacic. It is preferable that the prepolymer be a polyurethane or urea. The formulating techniques eliminate the need for post curing when using aliphatic chemistries in golf ball covers.

Abstract: The invention provides a golf ball material made of a resin composition composed of (a-I) an olefin-acrylic acid copolymer having a weight-average molecular weight (Mw) of from about 150,000 to about 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from about 3.0 to about 7.0, or a metal neutralization production thereof; (a-II) an olefin-methacrylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from about 120,000 to about 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from about 3.0 to about 7.0, or a metal neutralization production thereof; (b) an organic acid or a metal salt thereof; and (c) a basic inorganic metal compound which is capable of neutralizing acid groups in the composition. The golf ball material of the invention enables a highly neutralized ionomer having good flow properties and moldability to be achieved.

Abstract: The object of the present invention is to provide a golf ball which has excellent durability and wear-resistance and provides an excellent shot feeling. The present invention provides a golf ball comprising: a core consisting of a center and at least one intermediate layer covering the center; and a cover covering the core, wherein the cover is formed from a cover composition containing a thermoplastic polyurethane (A), a polyisocyanate compound (B) having at least two isocyanate groups, and a polyhydroxyether (C) as a resin component, wherein the cover composition has a slab hardness from 20 to 55 in shore D hardness, and the cover has a thickness from 0.1 mm to 1.5 mm.

Abstract: A golf ball having a core and two or more cover layers, wherein the multiple cover layers are formed from materials that are substantially the same composition with the same Shore hardness, but are modified in some way to alter the processing or performance characteristics of the golf ball, or the layers have the same hardness and at least one cover layer is formed of a polymer blend including a polyurethane composition, and at least one cover layer is formed of a different polymer blend.

Abstract: Golf balls golf balls containing a core having at least two layers made from a polyalkenamer rubber composition are provided. At least one layer is made from a relatively low modulus polyalkenamer rubber composition and at least one layer is made from a relatively high modulus polyalkenamer rubber composition. The rubber composition may further include other rubbers such as, for example, polybutadiene, polyisoprene, ethylene propylene rubber, ethylene propylene diene rubber, and styrene-butadiene rubber. The rubber composition helps improve resiliency of the core. In one version, a dual-core having an inner core and surrounding outer core layer is provided. In another version, the golf ball contains a three-piece core having an intermediate core layer made of polybutadiene rubber.

Abstract: An object of the present invention is to provide a golf ball which has an increased dry spin rate and wet spin rate on approach shots without sacrificing the processability into the cover. The present invention provides a golf ball cover material having shear loss moduli G1? (Pa), G2? (Pa), and G3? (Pa) that satisfy following equations when measured using a dynamic viscoelasticity measuring apparatus at following conditions. log G1??7.09??(1) log G2??7.17??(2) log G3??7.14??(3) G1? measuring conditions: shear mode, oscillation frequency: 10 Hz, temperature: 0° C., strain: 0.05%; G2? measuring conditions: shear mode, oscillation frequency: 10 Hz, temperature: ?30° C., strain: 0.05%; and G3? measuring conditions: shear mode, oscillation frequency: 10 Hz, temperature: 0° C., strain: 5%.

Abstract: An object of the present invention is to provide a golf ball with an improved controllability by enhancing a dry spin rate and wet spin rate in a so-called distance type golf ball. The present invention provides a golf ball comprising a constituting member that is formed from a polyurethane composition containing, as a resin component, a polyurethane elastomer using 1,4-bis(isocyanatomethyl)cyclohexane as a polyisocyanate component, wherein the polyurethane composition has a shear loss modulus G? of more than 5.03×106 Pa and 1.17×108 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.

Abstract: Golf balls including at least one layer formed from high moisture barrier nanocomposite compositions that have increased moisture resistance and generally include a nanocomposite including an intercalated clay and at least one resin having a barrier property, a polyolefin resin, and a compatilizer.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half. Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: The invention provides a golf ball having a core, a cover of at least one layer formed over the core, and a plurality of dimples on a surface of an outer layer of the cover. The ball has a coat of paint at the dimples, and non-dimple areas of the ball surface lack a coat of paint, leaving the outer cover layer exposed. The outer cover layer is formed of a material having a material hardness (Shore D) of less than 60. The dimples have a surface coverage (SR) of from 70 to 85%. The golf ball of the invention has outstanding spin characteristics.

Abstract: Golf balls may include a first pole, a second pole, and a seam located between the first and second poles. Dimples are formed on a surface of the ball in a pattern that includes a plurality of repeating sectors around each pole of the ball. The sectors on one ball half are rotationally offset across the seam line from the sectors on the other ball half. Additionally, each individual sector includes a line of symmetry over which the dimple pattern on one half of the sector is mirrored on the other half. A variety of different dimple types also may be arranged on a golf ball surface, e.g., within the sectors described above. Additional aspects of this invention relate to the features of various layers of a multi-piece golf ball and to methods of making golf balls having at least some of the features mentioned above.

Abstract: This disclosure provides a golf ball that includes carbon dioxide absorbents in order that the golf ball may reduce atmospheric carbon dioxide levels to aid in alleviating global warming. The golf ball may include an intermediate layer that is substantially impermeable to water, in order to ensure that the golf ball's core is not degraded by water produced by the carbon dioxide absorbance reaction. The chemical absorbents may be encapsulated in microcapsules so that carbon dioxide is not absorbed until the golf ball is used by a golfer.