CN101485930A - Two-layer core golf ball - Google Patents
Two-layer core golf ball Download PDFInfo
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- CN101485930A CN101485930A CNA2009101187368A CN200910118736A CN101485930A CN 101485930 A CN101485930 A CN 101485930A CN A2009101187368 A CNA2009101187368 A CN A2009101187368A CN 200910118736 A CN200910118736 A CN 200910118736A CN 101485930 A CN101485930 A CN 101485930A
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- case hardness
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0038—Intermediate layers, e.g. inner cover, outer core, mantle
- A63B37/004—Physical properties
- A63B37/0043—Hardness
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/0038—Intermediate layers, e.g. inner cover, outer core, mantle
- A63B37/004—Physical properties
- A63B37/0047—Density; Specific gravity
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/005—Cores
- A63B37/006—Physical properties
- A63B37/0062—Hardness
- A63B37/00621—Centre hardness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/005—Cores
- A63B37/006—Physical properties
- A63B37/0062—Hardness
- A63B37/00622—Surface hardness
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/005—Cores
- A63B37/006—Physical properties
- A63B37/0064—Diameter
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/005—Cores
- A63B37/006—Physical properties
- A63B37/0066—Density; Specific gravity
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/007—Characteristics of the ball as a whole
- A63B37/0072—Characteristics of the ball as a whole with a specified number of layers
- A63B37/0074—Two piece balls, i.e. cover and core
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B37/00—Solid balls; Rigid hollow balls; Marbles
- A63B37/0003—Golf balls
- A63B37/005—Cores
- A63B37/0051—Materials other than polybutadienes; Constructional details
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a two-layer golf ball consisting of a two-layer core and a cover. The two-layer core consists of a small, relatively hard center enclosed by a relatively soft outer core layer. The specific gravity of the center and that of the outer core layer are substantially the same.
Description
Technical field
The present invention relates generally to golf, and more specifically has the golf of the two-layer core that comprises the hard relatively center (center) that is surrounded by soft relatively outer nuclear layer (outer core layer).
Background technology
Golf with two-layer core is known.For example, U.S. Patent No. 5,779,562 disclose a kind of solid golf ball, the coating (cover) that it comprises solid core and surrounds described nuclear, described nuclear comprises the center stratum nucleare and surrounds the outer nuclear layer of described center stratum nucleare that the proportion of described center stratum nucleare and the specific gravity difference of described outer nuclear layer are greater than 0.1.U.S. Patent No. 7,255,656 disclose the golf with two-layer core, and described two-layer core has soft relatively soft (compression) kernel that is surrounded by the outer core of relative stiffness.Other example of two-layer core can be for example referring to U.S. Patent No. 4,781, and 383,4,858,924,5,002,281,5,048,838,5,104,126,5,482,285,5,490,674,6,277,024,6,379,269 and 6,616,550,6,852,044,6,916,254 and 7,125,345.
The invention provides a kind of novel double-layer core golf ball structure, it can provide the one or more of following advantage: the fine setting of the ball speed of rotation and/or hardness and higher resilience.
Summary of the invention
In one embodiment, the present invention relates to by the golf of examining and coating constitutes, wherein said nuclear has 1.40 inches～1.66 inches overall diameter and is made of center and outer nuclear layer.Described center has 0.125 inch～0.750 inch diameter, 70 Shore C or bigger case hardness and the proportion of 0.50g/cc～1.20g/cc.Described outer nuclear layer have than the little case hardness of the case hardness at described center and basically with the proportion equal specific gravity at described center.
In another embodiment, the present invention relates to by the golf of examining and coating constitutes, wherein said nuclear has 1.55 inches～1.62 inches overall diameter and is made of center and outer nuclear layer.Described center has 0.250 inch～0.500 inch diameter, 81 Shore C or bigger case hardness and the proportion of 0.50g/cc～1.18g/cc.Described outer nuclear layer have 90 Shore C or lower case hardness and basically with the proportion equal specific gravity at described center.The case hardness of described outer nuclear layer is less than or equal to the case hardness at described center.
In another embodiment, the present invention relates to by the golf of examining and coating constitutes, wherein said nuclear has 1.55 inches～1.60 inches overall diameter and is made of center and outer nuclear layer.Described center has 0.250 inch～0.500 inch diameter, 81 Shore C or bigger case hardness, the proportion of 0.50g/cc～1.18g/cc.Described outer nuclear layer have 90 Shore C or lower case hardness and basically with the proportion equal specific gravity at described center.Described coating is made of interior coating layer and outer coating layer.The coating layer has 65 Shore D or bigger case hardness and 0.020 inch～0.080 inch thickness in described.Described outer coating layer has 60 Shore D or littler case hardness and 0.015 inch～0.055 inch thickness.
The specific embodiment
The golf that has two-layer core and surround the coating of described nuclear is disclosed.This two-layer core is made of center and outer nuclear layer.The diameter at this center within the range having a lower limit of 0.100 or 0.125 or 0.250 inch and on be limited in 0.375 or 0.500 or 0.750 or 1.00 inch the scope.Described outer nuclear layer surrounds described center, make described two-layer core overall diameter within the range having a lower limit of 1.40 or 1.45 or 1.50 or 1.51 or 1.55 inches and on be limited in 1.60 or 1.62 or 1.66 inches the scope.
The case hardness at center is greater than the case hardness of outer nuclear layer.Preferably, the center have 70 Shore C or bigger case hardness or 81 Shore C or bigger case hardness or 85 Shore C or bigger case hardness or within the range having a lower limit of 70 or 80 Shore C and on be limited to case hardness in the scope of 90 or 95 ShoreC.The case hardness of outer nuclear layer is generally 80 Shore C or still less, and is preferably less than 80 Shore C or less than 70 Shore C or less than 60 Shore C.
The case hardness of nuclear is obtained by the mean value of repeatedly measuring of the relative hemisphere of taking from nuclear, must avoid upward or on blemish such as hole or the projection measuring at the seam line (parting line) of nuclear.Hardness measurement is carried out according to ASTM D-2240 " by the identation hardness (IndentationHardness of Rubber and Plastic by Means of a Durometer) of scleroscopic rubber and plastics ".Because the curved surface of nuclear, thereby before obtaining the case hardness reading, must be noted that and guarantee the centered beneath of ball at penetrator.Calibration, get the hardness reading when the digital hardometer that can read to 0.1 stiffness units is used for all hardness measurements and is set at after obtaining full-scale reading 1 second.This numeral hardometer must connect with the base of automatic supporter (stand) and make its bottom (foot) parallel with this base, makes that weight and the impact speed (attack rate) on the hardometer abideed by ASTM D-2240.
The proportion at center is less than or equal to the proportion of outer nuclear layer or identical with it basically.For the present invention, if proportion is identical or in 0.1g/cc each other, then proportion is substantially the same.Preferably, the proportion at center within the range having a lower limit of 0.50 0.90 or 1.05g/cc and on be limited to 1.15 1.18 or the scope of 1.20g/cc in.Described outer nuclear layer preferably has 1.00g/cc or bigger or 1.05g/cc or bigger or 1.10g/cc or bigger proportion.In particularly preferred embodiments, the proportion of the proportion at center and outer nuclear layer is substantially the same.
The center preferably forms by rubber composition or by polymer (" the HNP ") composition of elastomeric thermoplastic polymer as highly neutralization.Specially suitable thermoplastic polymer comprises:
Ionomer,
Thermoplastic polyester elastomer and with trade name
HPF 1000 Hes
The ionomer material that HPF2000 sells, all these materials can be buied from E.I.duPont de Nemours andCompany;
Ionomer, it can be buied from ExxonMobilChemical Company; With
Thermoplastic polyether block acid amides, it can be buied from ArkemaInc..
The appropriate H NP composition that is used to form the center comprises HNP and optional additive, filler and/or melt flows modifier.Appropriate H NP is α, the homopolymers of unsaturated monobasic of β-ethylenic or dicarboxylic acids and the salt of copolymer with and the combination, randomly comprise softening comonomer.Described acidic polymer is neutralized to 70% or higher (comprise and be up to 100%) with suitable cationic source.Suitable additive and filler for example comprise: foaming and foaming agent, fluorescent whitening agent, colouring agent, fluorescer, brightening agent, UV absorbent, light stabilizer, defoamer, processing aid, mica, talcum, Nano filling, antioxidant, stabilizing agent, softening agent, aromatised fraction (fragrance component), plasticizer, impact modifier, acid copolymer wax, surfactant; Inorganic filler, for example zinc oxide, titanium dioxide, tin oxide, calcium oxide, magnesia, barium sulfate, zinc sulfate, calcium carbonate, zinc carbonate, brium carbonate, mica, talcum, clay, silica, lead silicate etc.; High specific gravity metal powder filler, for example tungsten powder, molybdenum powder etc.; Abrasive material (regrind) more promptly, grinds and the nuclear material of recirculation; And Nano filling.Suitable melt flows modifier comprises, for example, aliphatic acid and salt thereof, polyamide, polyester, polyacrylate, polyurethane, polyethers, polyureas, polyalcohol, with and combination.Appropriate H NP composition also comprises: HNP and the ionomeric blend that partly neutralizes, and the ionomer of described part neutralization for example is disclosed among the U.S. Patent Application Publication No.2006/0128904, and its whole disclosures are incorporated herein by reference; With HNP and the other thermoplasticity and the blend of thermosets, described thermoplasticity and thermosets include but not limited to, ionomer, acid copolymer, engineering thermoplasties, the polymer based on the height neutralization of fatty acid/salt, polybutadiene, polyurethane, polyester, thermoplastic elastomer (TPE), and other conventional polymeric material.Suitablely especially be as the central core material
HPF 1000, and it can be buied from E.I.du Pont de Nemours and Company.Appropriate H NP component for example further is disclosed in the U.S. Patent No. 6,653,382,6,756,436,6,777,472,6,894,098,6,919,393 and 6,953,820, therefore its whole disclosures is incorporated herein by reference.
The suitable rubbers composition that is used to form described center comprises: primer (base rubber), crosslinking agent, filler and co-crosslinker or initator.Typical primer material comprises: natural and synthetic rubber, with and two or more combination.This primer is preferably the elastomeric mixture of polybutadiene or polybutadiene and other.Particularly preferably be and have 1 of at least 40% cis-structure, the 4-polybutadiene.More preferably, this primer is a high Mooney viscosity rubber.More a spot of other thermosets can be incorporated in this primer.Such material comprises, for example, and cis-polyisoprene, using trans-polyisoprene, balata, polychloroprene, polynorbornene, poly-octene, polypenthylene, butyl rubber, EPR, EPDM, styrene-butadiene and similar thermosets.This crosslinking agent generally includes slaine, as zinc salt, aluminium salt, sodium salt, lithium salts, nickel salt, calcium salt or the magnesium salts of unrighted acid or monocarboxylic acid (for example (methyl) acrylic acid).Preferred cross-linking agents comprises zinc acrylate resin, dizinc acrylate resin (ZDA), zinc methacrylate and zinc dimethacrylate (ZDMA), and composition thereof.This crosslinking agent must exist with the crosslinked amount of a part of chain that is enough to make the polymer in the elastomeric polymer component.Crosslinking agent is present in the rubber composition with the amount of 15～30phr or 19～25phr or 20～24phr usually.Can obtain required hardness by regulating crosslinked amount, this can for example realize by type and the amount that changes crosslinking agent.Initator can be any known polymerization initiator that decomposes during cure cycle, it includes but not limited to, cumyl peroxide, 1,1-two (t-butyl peroxy) 3,3,5-trimethyl-cyclohexane, α, α '-two (t-butyl peroxy) diisopropyl benzene, 2,5-two (t-butyl peroxy)-2,5-dimethylhexane, di-tert-butyl peroxide, 4, two (t-butyl peroxy) n-butyl pentanoates of 4-, lauryl peroxide, benzoyl peroxide, tert-butyl hydroperoxide or its mixture.This rubber composition randomly comprises one or more antioxidants.Antioxidant is the compound that can suppress or prevent the oxidative degradation of rubber.Suitable antioxidant comprises, for example, and dihydro azanaphthalene antioxidant, amine antioxidants and phenol antioxidant.This rubber composition also can comprise one or more fillers to regulate the density and/or the proportion of nuclear or coating.Filler is generally polymer beads or mineral grain.Exemplary filler comprises: the hydrated silica of precipitation, clay, talcum, asbestos, glass fibre, aramid fibre, mica, calcium metasilicate, barium sulfate, zinc sulphide, lithopone, silicate, carborundum, diatomite, polyvinyl chloride, carbonate (for example calcium carbonate and magnesium carbonate), metal (titanium for example, tungsten, aluminium, bismuth, nickel, molybdenum, iron, plumbous, copper, boron, cobalt, beryllium, zinc and tin), metal alloy (steel for example, brass, bronze, boron carbide whisker and tungsten carbide whisker), metal oxide (zinc oxide for example, iron oxide, aluminium oxide, titanium oxide, magnesia and zirconia), particulate carbonaceous material (graphite for example, carbon black, velveteen, bitumen, cellulose flock and leather fiber), microballoon (for example glass and pottery), flying dust, abrasive material again, Nano filling with and the combination.This rubber composition also can comprise and is selected from one or more following additives: free radical scavenger, promoter, antiscorching agent, colouring agent, fluorescer, chemical blowing and foaming agent, defoamer, stabilizing agent, softening agent, impact modifier, plasticizer etc.
This rubber composition randomly comprises the reagent of softness and firm (fast)." soft and firm reagent " used herein be meant with need not soft and firm reagent be equal to preparation the nuclear phase ratio, can make nuclear 1) more soft under the constant COR (having lower hardness) and/or 2) any compound of more firm (under the hardness that equates, having higher COR) or their blend.Preferably, this rubber composition comprises the soft and firm reagent of 0.05phr～10.0phr.In one embodiment, this softness and firm reagent exist with the amount of 0.05phr～3.0phr or 0.05phr～2.0phr or 0.05phr～1.0phr.In another embodiment, this softness and firm reagent exist with the amount of 2.0phr～5.0phr or 2.35phr～4.0phr or 2.35phr～3.0phr.In the high concentration embodiment of replacing, this softness and firm reagent exist with the amount of 5.0phr～10.0phr or 6.0phr～9.0phr or 7.0phr～8.0phr.In another embodiment, this softness and firm reagent exist with the amount of 2.6phr.
Suitable soft and firm reagent comprises, but be not limited to organic sulfur or metallic organosulfur compound, organosulfur compound (comprising monosulfide, disulphide and polysulfide), mercaptan or sulfhydryl compound, inorganic sulphide compounds, VIA compounds of group; The replacement or unsubstituted aromatics organic compound, aromatics organo-metallic compound or its mixture that do not contain sulphur or metal.This softness and firm reagent component also can be the blend of organosulfur compound and inorganic sulphide compounds.
Suitable soft and firm reagent of the present invention includes, but are not limited to have those of following general formula:
R wherein
1-R
5Can be: C
1-C
8Alkyl; Halogen group; Thiol group (SH), carboxylation group; Sulfonation group; And hydrogen; With random order; And phenyl-pentafluoride thiophenol; The 2-fluoro thiophenol; The 3-fluoro thiophenol; The 4-fluoro thiophenol; 2, the 3-fluoro thiophenol; 2, the 4-fluoro thiophenol; 3, the 4-fluoro thiophenol; 3, the 5-fluoro thiophenol; 2,3, the 4-fluoro thiophenol; 3,4, the 5-fluoro thiophenol; 2,3,4,5-phenyl tetrafluoride thiophenol; 2,3,5,6-phenyl tetrafluoride thiophenol; 4-chlorine phenyl tetrafluoride thiophenol; Reptazin; The 2-chlorothio-phenol; The 3-chlorothio-phenol; The 4-chlorothio-phenol; 2, the 3-chlorothio-phenol; 2, the 4-chlorothio-phenol; 3, the 4-chlorothio-phenol; 3, the 5-chlorothio-phenol; 2,3, the 4-chlorothio-phenol; 3,4, the 5-chlorothio-phenol; 2,3,4,5-tetrachlorobenzene thiophenol; 2,3,5,6-tetrachlorobenzene thiophenol; The phenyl-pentabromide thiophenol; The 2-bromo thiophenol; The 3-bromo thiophenol; The 4-bromo thiophenol; 2, the 3-bromo thiophenol; 2, the 4-bromo thiophenol; 3, the 4-bromo thiophenol; 3, the 5-bromo thiophenol; 2,3, the 4-bromo thiophenol; 3,4, the 5-bromo thiophenol; 2,3,4,5-tetrabromo-benzene thiophenol; 2,3,5,6-tetrabromo-benzene thiophenol; The pentaiodobenzene thiophenol; 2-iodobenzene thiophenol; 3-iodobenzene thiophenol; 4-iodobenzene thiophenol; 2,3-iodobenzene thiophenol; 2,4-iodobenzene thiophenol; 3,4-iodobenzene thiophenol; 3,5-iodobenzene thiophenol; 2,3,4-iodobenzene thiophenol; 3,4,5-iodobenzene thiophenol; 2,3,4,5-tetraiodo-benzene thiophenol; 2,3,5,6-tetraiodo-benzene thiophenol; Its zinc salt; Its non-metal salt, for example ammonium salt of reptazin; Reptazin magnesium; The reptazin cobalt; With its mixture.Preferably, this benzene halide thiol compounds is a pentachlorothiophenol, the form that it can be pure or with trade name
(containing load is the carrier based on clay of the sulphur compound reptazin of 45% (related with 2.4 parts of PCTP)) buys.
Can be from Struktol Company of Americaof Stow, OH buys.PCTP can be pure form from eChinachem of San Francisco, CA buys, or with salt form from eChinachem of San Francisco, CA buys.Most preferably, this benzene halide thiol compounds is the zinc salt of reptazin, and it can be buied from eChinachem of SanFrancisco CA.In U.S. Patent No. 7,148, disclose other example in 279, thereby its whole disclosures have been incorporated herein by reference.
" organosulfur compound " used herein refers to any compound that contains carbon, hydrogen and sulphur, and wherein sulphur directly is attached at least one carbon atom.Term used herein " sulphur compound " refers to such compound, and it is elementary sulfur, polymerised sulphur or its combination.Should be further understood that term " elementary sulfur " refers to S
8Circulus, " polymerised sulphur " are the structures that comprises at least one other sulphur with respect to elementary sulfur.
The other suitable example of soft and firm reagent includes but not limited to: 4, and 4 '-diphenyl, two sulphur; 4,4 '-xylyl, two sulphur; 2,2 '-benzamido diphenyl, two sulphur; Two (2-aminophenyl) two sulphur; Two (4-aminophenyl) two sulphur; Two (3-aminophenyl) two sulphur; 2,2 '-two (the amino naphthyl of 4-) two sulphur; 2,2 '-two (the amino naphthyl of 3-) two sulphur; 2,2 '-two (the amino naphthyl of 4-) two sulphur; 2,2 '-two (the amino naphthyl of 5-) two sulphur; 2,2 '-two (the amino naphthyl of 6-) two sulphur; 2,2 '-two (the amino naphthyl of 7-) two sulphur; 2,2 '-two (the amino naphthyl of 8-) two sulphur; 1,1 '-two (the amino naphthyl of 2-) two sulphur; 1,1 '-two (the amino naphthyl of 3-) two sulphur; 1,1 '-two (the amino naphthyl of 3-) two sulphur; 1,1 '-two (the amino naphthyl of 4-) two sulphur; 1,1 '-two (the amino naphthyl of 5-) two sulphur; 1,1 '-two (the amino naphthyl of 6-) two sulphur; 1,1 '-two (the amino naphthyl of 7-) two sulphur; 1,1 '-two (the amino naphthyl of 8-) two sulphur; 1,2 '-diaminostilbene, 2 '-two sulfo-dinaphthalenes; 2,3 '-diaminostilbene, 2 '-two sulfo-dinaphthalenes; Two (4-chlorphenyl) two sulphur; Two (2-chlorphenyl) two sulphur; Two (3-chlorphenyl) two sulphur; Two (4-bromophenyl) two sulphur; Two (2-bromophenyl) two sulphur; Two (3-bromophenyl) two sulphur; Two (4-fluorophenyl) two sulphur; Two (4-iodophenyl) two sulphur; Two (2, the 5-dichlorophenyl) two sulphur; Two (3, the 5-dichlorophenyl) two sulphur; Two (2, the 4-dichlorophenyl) two sulphur; Two (2, the 6-dichlorophenyl) two sulphur; Two (2, the 5-dibromo phenyl) two sulphur; Two (3, the 5-dibromo phenyl) two sulphur; Two (2-chloro-5-bromophenyl) two sulphur; Two (2,4, the 6-trichlorophenyl) two sulphur; Two (2,3,4,5, the 6-five chlorophenyl) two sulphur; Two (4-cyano-phenyl) two sulphur; Two (2-cyano-phenyl) two sulphur; Two (4-nitrobenzophenone) two sulphur; Two (2-nitrobenzophenone) two sulphur; 2,2 '-dithiobenzoic acid ethyl ester; 2,2 ' dithiobenzoic acid methyl esters; 2,2 '-dithiobenzoic acid; 4,4 '-dithiobenzoic acid ethyl ester; Two (4-acetyl phenyl) two sulphur; Two (2-acetyl phenyl) two sulphur; Two (4-formylphenyl) two sulphur; Two (4-carbamyl phenyl) two sulphur; 1,1 '-dinaphthyl, two sulphur; 2,2 '-dinaphthyl, two sulphur; 1,2 '-dinaphthyl, two sulphur; 2,2 '-two (1-chlorine dinaphthyl) two sulphur; 2,2 '-two (1-bromonaphthalene base) two sulphur; 1,1 '-two (2-chloronaphthyl, methylnaphthyl) two sulphur; 2,2 '-two (1-cyano group naphthyl) two sulphur; 2,2 '-two (1-acetyl naphthyl) two sulphur etc.; Or their mixture.Preferred organic sulfur component comprises 4,4 '-diphenyl, two sulphur, 4,4 '-xylyl, two sulphur or 2,2 '-benzamido diphenyl, two sulphur or their mixture.Preferred organic sulfur component comprises 4,4 '-xylyl, two sulphur.
In another embodiment, can use metallic organic sulfur component according to the present invention.Suitable metallic organic sulfur component includes, but are not limited to cadmium, copper, lead and the tellurium analog of DECTC, diamyl dithiocarbamate salt and dimethyl dithiocarbamate, perhaps their mixture.U.S. Patent No. 7,005,479 disclose other example, thereby its whole disclosures are incorporated herein by reference.
The suitable replacement or the unsubstituted aromatics organic component that do not contain sulphur or metal include, but are not limited to 4,4 '-dibenzenyl, azobenzene or its mixture.The size range of aromatics organic group is preferably C
6～C
20, and C more preferably
6～C
10Suitable inorganic sulphide component includes, but are not limited to the sulfide analog of titanium sulfide, manganese sulfide and iron, calcium, cobalt, molybdenum, tungsten, copper, selenium, yttrium, zinc, tin and bismuth.
Replacement or unsubstituted aromatics organic compound also are suitable as softness and firm reagent.Suitable replacement or unsubstituted aromatics organic component include, but not limited to have formula (R
1)
x-R
3-M-R
4-(R
2)
yComponent, wherein, R
1And R
2Hydrogen or replacement or unsubstituted C respectively do for oneself
1-20The alkyl of line style, branching or ring-type, alkoxyl or alkyl sulfide group, or the C of single, many or fused rings
6-C
24Aryl; Respectively do for oneself 0～5 integer of x and y; R
3And R
4Be selected from the C of single, many or fused rings separately
6-C
24Aryl; Comprise azo group or metal component with M.R
3And R
4Preferably be selected from C separately
6-C
10Aryl more preferably is selected from phenyl, benzyl, naphthyl, benzamido and benzothiazolyl.R
1And R
2Preferably be selected from separately and replace or unsubstituted C
1-10The alkyl of line style, branching or ring-type, alkoxyl or alkyl sulfide group or C
6-C
10Aryl.Work as R
1, R
2, R
3Or R
4When being substituted, replacement can comprise the one or more of following substituted radical: hydroxyl or its slaine; Sulfydryl or its slaine; Halogen; Amino, nitro, cyano group and acylamino-; Carboxyl comprises its ester, acid and slaine; Silicyl; Acrylate and its slaine; Sulfonyl or sulfonamide; With phosphate and phosphite ester.When M was metal component, it can be the available any suitable metal element of those of ordinary skills.Usually, described metal is a transition metal, although it is preferably tellurium or selenium.In one embodiment, this aromatics organic compound is substantially free of metal, and in another embodiment, and this aromatics organic compound is containing metal not fully.
This softness and firm reagent also can comprise VIA family component.Elementary sulfur and polymerised sulphur can be from Elastochem, Inc.of Chardon, and OH buys.Exemplary sulfur catalyst compound comprises PB (RM-S)-80 elementary sulfur and PB (CRST)-65 polymerised sulphur, and it separately can be from Elastochem, and Inc. buys.With trade name
Exemplary tellurium catalyst and with trade name VANDEX
RExemplary selenium catalyst can buy from RT Vanderbilt separately.
Other suitable soft and firm reagent includes, but are not limited to hydroquinones, benzoquinones, quinhydrone, catechol and resorcinol.The hydroquinones that is fit to is for example further open in U.S. Patent Application Publication No.2007/0213440.The benzoquinones that is fit to is for example further open in U.S. Patent Application Publication No.2007/0213442.The quinhydrone that is fit to is for example further open in U.S. Patent Application Publication No.2007/0213441.Catechol that is fit to and resorcinol are for example further open in U.S. Patent Application Publication No.2007/0213144.Therefore the whole disclosures separately with these lists of references are incorporated herein by reference.
The example of the polybutadiene that is suitable for the center that forms that can buy includes, but are not limited to: buna CB 23, and it can be buied from LANXESSCorporation; SE BR-1220, it can be buied from DowChemical Company;
BR 40 and B R60, it can be buied from Polimeri Europa; UBEPOL-
Rubber, it can be from UBEIndustries, and Ltd. buys; And BR01, it can be from Japan Synthetic Rubber Co., and Ltd buys.
The suitable type of primer, crosslinking agent, filler, co-crosslinker, initator and additive and quantity are described in for example U.S. Patent Application Publication No.2004/0214661,2003/0144087 more fully, with 2003/0225197, with U.S. Patent No. 6,566,483,6,695,718 and 6, in 939,907, thereby its whole disclosures are incorporated herein by reference.
The center also can be formed by low deformable material, and described low deformable material is selected from metal, rigid plastics, uses high strength organic or inorganic filler or fibre-reinforced polymer and their blend or compound.Suitable low deformable material also is included in those disclosed material among the U.S. Patent application No.2005/0250600, thereby its whole disclosures are incorporated herein by reference.
The center also can comprise thermosetting or thermoplastic, polyurethane for example, polyureas, Zhong He ionomer partially or completely, the thermosetting polydiene rubber is polybutadiene for example, polyisoprene, ethylene propylene diene monomer rubber, ethylene propylene rubber, natural rubber, balata, butyl rubber, halobutyl rubber; butadiene-styrene rubber or any SBC (for example styrene ethylene butadiene styrene rubber etc.); the polyolefin of metallocene or other single site catalysed; polyurethane copolymer (for example; with the copolymer of silicones) is as long as this material satisfies required recovery coefficient (COR).
Outer nuclear layer is formed by rubber composition usually.Suitable rubber composition comprises above those disclosed.
The other material that is suitable for formation center and outer nuclear layer is included in U.S. Patent No. 7,300, disclosed nuclear composition in 364, thereby its whole disclosures are incorporated herein by reference.For example, suitable center and outer nuclear material comprise HNP, metal cation or the two the combination that neutralizes with organic aliphatic acid and its salt.Except the HNP with organic aliphatic acid and the neutralization of its salt, the nuclear composition can comprise that also at least a swelling index is at least about 40 elastomeric material.Preferably this swelling index is at least about 50.Produce elasticity golf and therefore be suitable for polymer of the present invention and include but not limited to: CB23, CB22, it can be from Bayer Corp.of Orange, and TX buys; BR60, it can be buied from EnichemofItaly; And 1207G, it can be from Goodyear Corp.of Akron, and OH buys.In addition, the rubber in golf prepared in accordance with the present invention, polybutadiene for example has about 40～about 80, more preferably from about 45～about 65 and most preferably from about 45～about 55 Mooney viscosity usually.Mooney viscosity is measured according to ASTM-D1646 usually.
Two-layer core is surrounded with the coating that comprises one or more layers.Suitable coating layer (cover layer) material comprises ionomer resin and its blend (especially
Ionomer resin), polyurethane, polyureas, (methyl) acrylic acid, thermoplastic elastomer polymer, polyethylene and synthetic or natural vulcanized rubber such as balata.The suitable ionomer coating material of buying includes, but are not limited to:
Ionomer resin and
HPF 1000 and HPF 2000, it can be buied from E.I.du Pont DeNemours and Company; And
Ionomer, it can be bought from ExxonMobil ChemicalCompany.
Especially suitable outer coating layer material comprises soft relatively polyurethane and polyureas.Preferably, this outer coating layer material has 45 Shore D or lower or 40 Shore D or material hardness lower or 25ShoreD～40 Shore D or 30 Shore D～40 Shore D, and described material hardness is measured by ASTM D2240.The flexural modulus of coating (measuring by ASTM D6272-98 Procedure B) is preferably 500psi or bigger or 500psi～150000psi.
Should be understood that between " material hardness " and " the directly hardness of measuring on the golf " basic difference is arranged.For the present invention, material hardness measures and is usually directed to measure the hardness of smooth " plate (slab) " or " button (button) " that formed by this material according to ASTM D2240.Directly the hardness that records on golf (or other sphere) causes different hardness numbers usually.This difference of hardness number includes but not limited to owing to some factors, and the material of spherical structure (that is, the number of nuclear type, nuclear and/or coating layer etc.), ball (or spheroid) diameter and adjacent each layer is formed.Should also be understood that these two kinds of measuring techniques be not linear correlation and therefore, a kind of hardness number can not be easily related with another kind of hardness number.The hardness number of the coating material of being given herein (coating layer material and outer coating layer material in comprising) is the material hardness value of measuring according to ASTM D2240.
The blend of ionomer and thermoplastic elastomer (TPE) also is suitable.The ionomer coating material that is fit to for example further is disclosed in the U.S. Patent No. 6,653,382,6,756,436,6,894,098,6,919,393 and 6,953,820, thereby its whole disclosures are incorporated herein by reference.The polyurethane coating material that is fit to for example further is disclosed in the U.S. Patent No. 5,334,673,6,506,851 and 6,756,436, therefore its whole disclosures is incorporated herein by reference.The polyureas coating material that is fit to for example further is disclosed in the U.S. Patent No. 5,484,870 and 6,835,794, thereby its whole disclosures are incorporated herein by reference.Suitable polyurethane-urea hybridization thing is blend or the copolymer that comprises carbamate or urea segment, as is disclosed among the U.S. Patent Application Publication No.2007/0117923, thereby its whole disclosures are incorporated herein by reference.Suitable coating material in addition for example is disclosed among open WO00/23519 of U.S. Patent Application Publication No.2005/0164810, U.S. Patent No. 5,919,100 and PCT and the WO00/29129, and its whole disclosures are incorporated herein by reference.
In a concrete embodiment, coating is the individual layer that is preferably formed by ionomer compositions.Described individual layer coating preferably has 65 Shore D or lower or 60 Shore D or lower case hardness and has 0.010 or 0.015 or 0.020 inch lower limit and the thickness in 0.055 or 0.100 or 0.120 or 0.140 inch upper range.
In another specific embodiment, the double-coating thing that coating layer and outer coating layer constituted in coating was served as reasons.Should in coating layer preferably form and preferably have 60Shore D or bigger or 65 Shore D or bigger case hardness and the thickness in scope with 0.010 or 0.015 or 0.020 or 0.030 inch lower limit and 0.035 or 0.045 or 0.080 or 0.120 inch upper limit by ionomer compositions.But should preferably form by outer coating layer by the copolymer or the hybridization thing of polyurethane that can cast or reaction injection molding(RIM), polyureas or polyurethane/polyurea.This coating material is preferably heat cured, but also can be thermoplasticly, and preferably has 20～70 Shore D, more preferably 30～65 Shore D and the case hardness of 35～60 Shore D most preferably.This outer coating layer preferably has the thickness in the scope with 0.010 or 0.015 or 0.025 inch lower limit and 0.035 or 0.040 or 0.055 or 0.080 inch upper limit.
In particularly preferred embodiments, the invention provides the golf that constitutes by following: two-layer core, it is made of center and outer nuclear layer; With the double-coating thing, it is made of interior coating layer and outer coating layer.The center is formed by thermoplasticity or thermoset polymer compositions, and in particularly preferred embodiments, have the one or more of following character: 0.375 inch diameter, the core rigidities of 85 Shore C, the case hardness of 85 Shore C and the proportion of 1.15g/cc.The center preferably (for example can be buied from E.I.du Pont de Nemours and Company by the polymer composition of highly neutralization
HPF 1000), or the ionomeric blend of HNP and part neutralization forms.Outer nuclear layer is preferably formed by rubber composition, and in particularly preferred embodiments, has the one or more of following character: 0.602 inch thickness, the case hardness of 80 Shore C and the proportion of 1.15g/cc.This two-layer core preferably has the hardness of 60～100 hardness (compression) or 60～75 or 70 hardness.Interior coating layer is preferably by comprising
7940/
The composition of 8940 Li/Na blend forms, and in particularly preferred embodiments, has the one or more of following character: 0.030 inch thickness, the case hardness of 66 Shore D.
7940 (wherein MAA acid groups partly neutralized with lithium ion E/MAA copolymer) and
8940 (wherein MAA acid groups partly neutralized with sodium ion E/MAA copolymer) can buy from E.I.du Pont deNemours and Company.Outer coating layer is preferably formed by polyurethane or polyurea composition, and in particularly preferred embodiments, has the one or more of following character: the case hardness of 0.030 inch thickness and 45 Shore D.
Between nuclear and coating, randomly adopt moisture barrier.Moisture barrier for example is disclosed in the U.S. Patent No. 6,632,147,6,932,720,7,004,854 and 7,182,702 further, thereby its whole disclosures are incorporated herein by reference.
Except above-mentioned disclosed material, any one of nuclear or coating layer also can comprise one or more of following material: thermoplastic elastomer (TPE), thermo-setting elastomer, synthetic rubber, TPV, copolymer ionomers, ternary polymerization type ionomer, Merlon, polyolefin, polyamide, copolyamide, polyester, polyester-amides, polyether-amide, polyvinyl alcohol, acrylonitrile-butadiene-styrene copolymer, polyarylate, polyacrylate, polyphenylene oxide, toughness reinforcing polyphenylene oxide, high impact polystyrene, the diallyl phthalate polymer, the polymer of metallocene catalysis, styrene-acrylonitrile (SAN), olefin-modified SAN, acrylonitrile-styrene-acrylonitrile, phenylethylene-maleic anhydride (S/MA) polymer, styrene copolymer, functionalized styrene copolymer, functionalized styrene copolymer, the phenylethylene terpolymer, cellulosic polymer, liquid crystal polymer (LCP), ethylene-propylene-diene rubber (EPDM), ethylene-vinyl acetate copolymer (EVA), ethylene propylene rubber (EPR), ethylene vinyl acetate, polyureas, and polysiloxanes.The suitable polyamide that is used as other material in the disclosed in this article composition also comprises the resin by following acquisition: (1) is dicarboxylic acids, for example oxalic acid, adipic acid, decanedioic acid, terephthalic acid (TPA), isophthalic acid or 1 (a), the 4-cyclohexane dicarboxylic acid, with (b) diamines, for example ethylenediamine, tetra-methylenedimine, pentanediamine, hexamethylene diamine or decamethylene diamine, 1, the 4-cyclohexanediamine or-polycondensation of xyxylene diamines; (2) ring-opening polymerisation of cyclic lactames, described cyclic lactames is epsilon-caprolactams or omega-lauric lactam for example; (3) polycondensation of amino carboxylic acid, described amino carboxylic acid be 6-aminocaprolc acid, 9 aminononanoic acid, 11-aminoundecanoic acid or 12 for example; Or the copolymerization of (4) cyclic lactames and dicarboxylic acids and diamines.The instantiation of suitable polyamide comprises nylon 6, nylon 66, NYLON610, nylon 11, nylon 12, copolymer nylon, nylon MXD 6 and nylon 46.
Other preferable material that is suitable for being used as in the disclosed in this article golf composition other material comprises: the Skypel polyester elastomer, and it can be buied from SK Chemicals of South Korea;
Diblock and triblock copolymer, it can be from Kuraray Corporation ofKurashiki, and Japan buys; With
Diblock and triblock copolymer, it can be from KratonPolymers LLC of Houston, and Texas buys.
Ionomer also is well suited for and composition blend disclosed herein.Suitable ionomer polymer comprises alpha-olefin/undersaturated polymers of carboxylic acid-or terpolymer type ionomer resin.Copolymer ionomers be by will and having the α of 3～8 carbon atoms at alpha-olefin, and at least a portion of the carboxyl on the copolymer of beta-unsaturated carboxylic acid is with the metal ion neutralization and obtain.Ternary polymerization type ionomer by will be at alpha-olefin, have the α of 3～8 carbon atoms, beta-unsaturated carboxylic acid and the α with 2～22 carbon atoms, at least a portion of the carboxyl in the terpolymer of β-unsaturated carboxylate neutralizes with metal ion and obtains.The example that is used for the ionomeric suitable alpha-olefin of copoly type and ternary polymerization type comprises ethene, propylene, 1-butylene and 1-hexene.The example that is used for the ionomeric suitable unsaturated carboxylic acid of copoly type and ternary polymerization type comprises acrylic acid, methacrylic acid, ethylacrylic acid (ethacrylic), α-Lv Bingxisuan, crotonic acid, maleic acid, fumaric acid and itaconic acid.The ionomer that copoly type and ternary polymerization type ionomer comprise acid content with change and sour degree of neutralization, neutralize by unit price disclosed herein or bivalent cation.Being fit to the ionomeric example of buying with composition blend disclosed herein comprises and can buy from E.I.duPont de Nemours and Company
Ionomer resin and can buy from ExxonMobil Chemical Company
Ionomer.
Silicone material also is well suited for and composition blend disclosed herein.Suitable silicone material comprises monomer, oligomer, prepolymer and polymer, and adds or do not add reinforcer.One type suitable silicone material can be introduced at least 1 thiazolinyl with at least 2 carbon atoms in their molecule.The example of these thiazolinyls includes, but not limited to vinyl, pi-allyl, cyclobutenyl, pentenyl, hexenyl and decene base.This alkenyl functional degree can be positioned at any position of silicones structure, comprises or whole two ends of structure.Remaining (that is non-thiazolinyl) in this component is independently selected from hydrocarbon or the halogenated hydrocarbon group that does not contain the aliphatic degree of unsaturation with the organic group of silicon bonding.The limiting examples of these groups comprises: alkyl, for example methyl, ethyl, propyl group, butyl, amyl group and hexyl; Cycloalkyl, for example cyclohexyl and suberyl; Aryl, for example phenyl, tolyl and xylyl; Aralkyl, for example benzyl and phenethyl; And haloalkyl, for example 3,3,3-trifluoro propyl and and chloromethyl.The suitable silicone material of another type is the silicone material with the alkyl that does not have the aliphatic degree of unsaturation.Concrete example comprises: the dimethyl siloxane of trimethylsiloxy group end-blocking-methyl hexenyl silicone copolymers; The dimethyl siloxane of dimethyl hexenyl siloxy end-blocking-methyl hexenyl silicone copolymers; The dimethyl siloxane of trimethylsiloxy group end-blocking-methyl ethylene silicone copolymers; Methyl phenyl siloxane-the dimethyl siloxane of trimethylsiloxy group end-blocking-methyl ethylene silicone copolymers; The dimethyl polysiloxane of dimethyl vinyl siloxy end-blocking; Dimethyl siloxane-methyl ethylene the silicone copolymers of dimethyl vinyl siloxy end-blocking; The methyl phenyl silicone of dimethyl vinyl siloxy end-blocking; Methyl phenyl siloxane-dimethyl siloxane-methyl ethylene the silicone copolymers of dimethyl vinyl siloxy end-blocking; And wherein at least one group listed above is the copolymer of dimethyl hydroxyl siloxy.The example of the silicones of buying of composition blend suitable and disclosed herein comprises:
Silicon rubber, it can be from DowCorningCorporation of Midland, and Michigan buys;
Silicon rubber, it can be from General Electric Company of Waterford, and Newyork buys; And
Silicones, it can be buied from Wacker Chemie AG of Germany.
The copolymer of other type yet can add in the golf composition disclosed herein.For example, the suitable copolymers that comprises epoxy monomer comprises: wherein polybutadiene block comprises the SBS of epoxide group, and wherein polyisoprene blocks comprises the SIS of epoxy radicals.The example of the copolymer of the epoxy-functional that can buy comprises: ESBS A1005, ESBS A1010, ESBS A1020, ESBS AT018 and the epoxidised SBS of ESBSAT019, it can be from Daicel ChemicalIndustries, and Ltd.of Japan buys.
Be used to form each layer of golf of the present invention ionomer compositions can with the nonionic thermoplastic resin, especially in order to control properties of product.The example of suitable nonionic thermoplastic resin includes, but not limited to polyurethane, polyether ester, polyamide ether, polyethers urea, can buy from Arkemalnc.
Thermoplastic polyether block acid amides, SBS, styrene (ethene-butylene)-styrene block copolymer, polyamide, polyester, polyolefin (for example, polyethylene, polypropylene, ethylene-propylene copolymer, ethene-(methyl) acrylate, ethene-(methyl) acrylic acid, have the abrasive flour of functionalized polymeric, elastomer (for example polyethylene of EPDM, metallocene catalysis) and this thermo-setting elastomer of maleic anhydride graft, epoxidation etc.
What be suitable for formation center and/or outer core equally is in U.S. Patent Application Publication No.2003/0130434 and U.S. Patent No. 6,653, therefore the disclosed composition that has high COR when forming medicine ball is incorporated herein by reference its whole disclosures in 382.
The present invention is not subjected to the concrete process limitation of any formation golf ball layer.Should understand.Can form described layer by any suitable technique, described technology comprises injection moulding, compression moulding, casting and reaction injection molding(RIM).
Golf of the present invention have usually 0.70 or bigger, preferred 0.75 or bigger and more preferably 0.78 or bigger recovery coefficient.Golf of the present invention has 40 or bigger hardness (compression) or the hardness within the scope of the upper limit with 50 or 60 lower limit and 100 or 120 usually.The composition based on polybutadiene that is suitable for use in the curing in the golf of the present invention has 15 Shore A or bigger hardness usually, and preferably has 30 Shore A～80 Shore D, the hardness of 50 Shore A～60 Shore D more preferably.
Golf of the present invention have usually 60% bigger, preferred 65% or bigger and more preferably 75% or bigger recess (dimple) cover.
United States Golf Association's standard (Golf Association specification) is restricted to 1.680 inches with the minimum dimension of contest golf.Then do not have standard for maximum gauge, and can use the golf of arbitrary dimension for amusement.Golf of the present invention can have the overall diameter of arbitrary dimension.The preferred diameter of golf of the present invention is 1.680 inches～1.800 inches.More preferably, golf of the present invention has 1.680 inches～1.760 inches overall diameter and even more preferably 1.680 inches～1.740 inches overall diameter.
Golf of the present invention preferably has 70-95gcm
2, preferred 75-93gcm
2, and more preferably 76-90gcm
2Rotary inertia (" MOI ").For low MOI embodiment, this golf preferably has 85gcm
2Or littler or 83gcm
2Or littler MOI.For high MOI embodiment, this golf preferably has 86gcm or bigger or 87gcm or bigger MOI.MOI measures on the MOI-005-104 type rotary inertia instrument (Moment of Inertia Instrument) that CT makes by Inertia Dynamics of Collinsville.This instrument is connected to by the COMM port that the PC that is used for communication goes up and is driven by the MOI instrument software of version #1.2.
Golf ball of the present invention preferably has 50～90 or 60～85 or 65～85 overall hardness.
Hardness is the key factor in the golf design.For example, the hardness of nuclear can influence the speed of rotation that feel (feel) and ball leave golf club.As at the Compression of Jeff Dalton by AnyOther Name, Science and Golf IV, Proceedings of the World Scientific Congressof Golf (Eric Thain ed., Routledge, 2002) disclosed in (" J.Dalton "), can use several diverse ways to measure hardness, comprise Atti hardness, Riehle hardness, the load under various fixed load and skew (offset)/deflection mensuration and effective modulus.For the present invention, " hardness (compression) " refers to Atti hardness and uses the Atti hardness test device, measure according to known procedure that wherein piston is used for ball is compressed facing to spring.Fix the stroke of this piston and the deflection of measuring spring.The measurement of spring deflection not from the contacting of ball; On the contrary, the deflection of spring approximately at first has the skew of 1.25mm (0.05 inch).The nuclear of very low rigidity can not cause the spring deflection to surpass 1.25mm and therefore have zero compression ((zero compression) measurement result.The design of Atti hardness test machine is used for measuring the object of diameter 42.7mm (1.68 inches); Therefore, less object for example the golf ball must have a snack the total height of 42.7mm to obtain pin-point reading.The formula that provides according to J.Dalton can carry out from Atti hardness to Riehle the conversion of (nuclear), Riehle (ball) 100kg deflection, 130-10kg deflection or effective modulus.The restriction of any concrete hardness of the central point that golf ball of the present invention is not examined.In a concrete embodiment, this core rigidities is 30 Shore C～80 ShoreC or 40 Shore C～75 Shore C or 45 Shore C～70 Shore C.In another specific embodiment, this core rigidities is 60 Shore C～95 Shore C or 60 Shore C～90 ShoreC or 65 Shore C～80 Shore C.
Golf of the present invention is endorsed the hardness gradient with zero or negative or positive.Hardness gradient is by in the surface of kernel (or outer nuclear layer) and radially inwardly towards the center of kernel, usually the hardness measurement of carrying out with the 2mm increment and defining.For the present invention, " bearing " and " positive " refer to that the hardness number of golf ball parts (component) outer surface cuts the result of the hardness number of this parts penetralia office.For example, if the outer surface of solid core has the hardness number lower than the center (that is, soft-hearted in this surface ratio), then this hardness gradient will be considered to " bearing " gradient.Be used for hardness gradient and measure in order to prepare nuclear, nuclear is pressed in the hemispherical anchor clamps (holder) that internal diameter is slightly less than this nuclear diameter approximately gently, makes this nuclear be held in place in the hemisphere portion of these anchor clamps, allows the geometric center face of nuclear expose simultaneously.By friction this nuclear is fixed in the anchor clamps, makes that it can not move during cutting and grinding (grinding) step, but the distortion of the natural shape that friction is not excessive feasible generation to be examined.Nuclear is fixed and makes the seam line of nuclear be roughly parallel to the top of anchor clamps.Before fixing, be orientated to the diameter that 90 degree are measured this nuclear with respect to this.And think that from the bottom of anchor clamps to the top measurement of nuclear calculating in the future provides reference point.Use band saw or other suitable cutting element above the geometric center of the exposure of nuclear, to carry out rough cut slightly, guarantee that this nuclear does not move during this step in anchor clamps.The remainder that still is in the anchor clamps of nuclear is fixed on the substrate (base plate) of surface grinding machine.Smooth, smooth surface is worn on the coarse nuclear surface of this exposure, shows the geometric center of this nuclear, guarantee the nuclear that will as above measure original height lucky half remove in ± 0.004 inch.Nuclear is stayed in the anchor clamps, found the center of this nuclear and mark and measure hardness at this centre mark place carefully with centre square.The hardness measurement at any distance place, center of freestone can followingly be measured: radially outward rules from this centre mark, and measurement and the excentric distance of mark, generally with the 2mm increment.Carry out all hardness measurements of carrying out on the plane of this geometric center passing, nuclear still is in the anchor clamps and does not upset its orientation simultaneously, makes test surfaces always be parallel to the bottom of anchor clamps.The difference of hardness that goes up any precalculated position from nuclear calculated as average surface hardness subtract suitable reference point place () hardness for example, for the center of individual layer solid core at nuclear, make than in soft-hearted nuclear surface have negative hardness gradient.Hardness gradient for example is disclosed in the U.S. Patent application No.11/832 that submits on August 1st, 2007 more fully, in 163, thereby its whole disclosures is incorporated herein by reference.
When setting forth numerical lower limits and numerical upper limits in this article, be intended that any combination that to use these values.
With cited herein all patents, publication, test procedure and other list of references, comprise priority document, be incorporated herein by reference fully, it quotes degree is the disclosure content and the present invention and does not have inconsistent for all authorities of wherein allowing this introducing.
Though described illustrated embodiment of the present invention in detail, it should be understood that those of ordinary skills with obvious and can easily carry out various other modification, and do not break away from the spirit and scope of the present invention.Therefore, the scope that is not intended to claims should be limited to the embodiment and the description of setting forth herein, but all features of the patentable novelty that claim should be interpreted as containing among the present invention to be had comprise that those skilled in the art are considered as all features of its equivalent.
Claims (22)
1. by the golf of examining and coating constitutes, wherein said nuclear has 1.40 inches～1.66 inches overall diameter and is made of following:
The center, it has 0.125 inch～0.750 inch diameter, 70 Shore C or bigger case hardness and the proportion of 0.50g/cc～1.20g/cc; And
Outer nuclear layer, its have than the little case hardness of the case hardness at described center and basically with the proportion equal specific gravity at described center.
2. the golf of claim 1, wherein said center is formed by rubber composition.
3. the golf of claim 1, wherein said center is formed by the ionomer compositions of partially or completely neutralization.
4. the golf of claim 1, wherein said nuclear has 1.51 inches～1.60 inches overall diameter.
5. the golf of claim 1, wherein said center has 0.250 inch～0.375 inch diameter.
6. the golf of claim 1, wherein said center has the proportion of 1.05g/cc～1.18g/cc.
7. the golf of claim 1, wherein said center has 85 Shore C or bigger case hardness.
8. the golf of claim 7, wherein said outer nuclear layer has 80 Shore C or littler case hardness.
9. the golf of claim 1, wherein said nuclear has 60～100 overall hardness.
10. the golf of claim 1, wherein said coating is made of the individual layer of the thickness with 60 Shore D or littler case hardness and 0.015 inch～0.100 inch.
11. the golf of claim 1, wherein said coating is made of following:
Interior coating layer, it has 65 Shore D or bigger case hardness and 0.020 inch～0.080 inch thickness; With
Outer coating layer, it has 60 Shore D or littler case hardness and 0.015 inch～0.055 inch thickness.
12. the described golf of claim 1, wherein said coating is made of following:
Interior coating layer, its polymer composition by partially or completely neutralization form and have 65Shore D or bigger case hardness and 0.015 inch～0.035 inch thickness; With
Outer coating layer, it is formed by polyurethane or polyurea composition and has 50 Shore D or littler material hardness and 0.015 inch～0.035 inch thickness.
13. by the following golf that constitutes:
Nuclear, it has 1.55 inches～1.62 inches overall diameter and is made of following:
The center, it has 0.250 inch～0.500 inch diameter, 81 Shore C or bigger case hardness and the proportion of 0.50g/cc～1.18g/cc; And
Outer nuclear layer, its have 90 Shore C or littler case hardness and basically with the proportion equal specific gravity at described center;
The case hardness of wherein said outer nuclear layer is less than or equal to the case hardness at described center; And coating.
14. the golf of claim 13, wherein said center have 0.350 inch～0.375 inch diameter.
15. the golf of claim 13, wherein said center have 85 Shorc C or bigger case hardness.
16. the golf of claim 13, wherein said outer nuclear layer have 0.550 inch～0.650 inch thickness.
17. the golf of claim 13, wherein said nuclear has 60～100 overall hardness.
18. the golf of claim 13, wherein said center is formed by rubber composition.
19. the golf of claim 13, wherein said center is formed by the ionomer compositions of partially or completely neutralization.
20. by the following golf that constitutes:
Nuclear, it has 1.55 inches～1.60 inches overall diameter and is made of following:
The center, it has 0.250 inch～0.500 inch diameter, 81 Shore C or bigger case hardness and the proportion of 0.50g/cc～1.18g/cc; And
Outer nuclear layer, its have 90 Shore C or littler case hardness and basically with the proportion equal specific gravity at described center; With
Coating, it is made of following:
Interior coating layer, it has 65 Shore D or bigger case hardness and 0.020 inch～0.080 inch thickness; And
Outer coating layer, it has 60 Shore D or littler case hardness and 0.015 inch～0.055 inch thickness.
21. the golf of claim 20, the case hardness of wherein said outer nuclear layer is less than the case hardness at described center.
22. the golf of claim 20, the case hardness at wherein said center are the case hardness of 85 Shore C or bigger and described outer nuclear layer is 80 Shore C or littler.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/972,227 | 2008-01-10 | ||
| US11/972,227 US20090181801A1 (en) | 2008-01-10 | 2008-01-10 | Two-Layer Core Golf Ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101485930A true CN101485930A (en) | 2009-07-22 |
| CN101485930B CN101485930B (en) | 2011-09-28 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101187368A Expired - Fee Related CN101485930B (en) | 2008-01-10 | 2009-01-12 | Two-layer core golf ball |
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| Country | Link |
|---|---|
| US (1) | US20090181801A1 (en) |
| JP (1) | JP5467772B2 (en) |
| CN (1) | CN101485930B (en) |
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| CN102078679A (en) * | 2009-11-30 | 2011-06-01 | 耐克国际有限公司 | Solid golf ball with thin mantle layer |
| CN102107073A (en) * | 2009-12-28 | 2011-06-29 | 住胶体育用品株式会社 | Golf ball |
| CN102266658A (en) * | 2010-06-02 | 2011-12-07 | 阿库施耐特公司 | Multilayer golf |
| CN102526990A (en) * | 2010-12-22 | 2012-07-04 | 阿库施耐特公司 | Bi-core containing zero gradient center and positive gradient outer core layer |
| CN103657009A (en) * | 2012-09-07 | 2014-03-26 | 阿库施耐特公司 | Golf balls having dual-layered cores with metal-containing centers and thermoset outer cores |
| CN103877703A (en) * | 2012-12-20 | 2014-06-25 | 阿库施耐特公司 | Dual-Core Comprising Zero Gradient Center And Positive Gradient Outer Core Layer |
| TWI458524B (en) * | 2011-08-23 | 2014-11-01 | Nike Innovate Cv | Golf ball having outer cover with low flexural modulus |
| TWI468204B (en) * | 2011-07-29 | 2015-01-11 | Nike Innovate Cv | A golf ball including a blend of highly neutralized acid polymers and method of manufacture |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2009165824A (en) | 2009-07-30 |
| US20090181801A1 (en) | 2009-07-16 |
| JP5467772B2 (en) | 2014-04-09 |
| CN101485930B (en) | 2011-09-28 |
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