GB2032287A - Solid uncured golf ball center - Google Patents
Solid uncured golf ball center Download PDFInfo
- Publication number
- GB2032287A GB2032287A GB7930763A GB7930763A GB2032287A GB 2032287 A GB2032287 A GB 2032287A GB 7930763 A GB7930763 A GB 7930763A GB 7930763 A GB7930763 A GB 7930763A GB 2032287 A GB2032287 A GB 2032287A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- golf ball
- ball center
- butadiene
- styrene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007787 solid Substances 0.000 title claims abstract description 31
- 229920001400 block copolymer Polymers 0.000 claims abstract description 40
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 30
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 26
- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 18
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical group [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 17
- 229920001577 copolymer Polymers 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 26
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 6
- 239000010690 paraffinic oil Substances 0.000 abstract description 9
- 239000003963 antioxidant agent Substances 0.000 abstract description 8
- 230000003078 antioxidant effect Effects 0.000 abstract description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009472 formulation Methods 0.000 description 11
- 238000002156 mixing Methods 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 240000002636 Manilkara bidentata Species 0.000 description 3
- 229920003182 Surlyn® Polymers 0.000 description 3
- 235000016302 balata Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 238000004260 weight control Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920013623 Solprene Polymers 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- LRCFXGAMWKDGLA-UHFFFAOYSA-N dioxosilane;hydrate Chemical compound O.O=[Si]=O LRCFXGAMWKDGLA-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 229940042472 mineral oil Drugs 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229960004029 silicic acid Drugs 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- A63B37/02—Special cores
-
- 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
-
- 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
- A63B37/005—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
- A63B37/005—Cores
- A63B37/006—Physical properties
- A63B37/0067—Weight; Mass
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A substantially spherical, solid golf ball center comprises a non-cross- linked, butadiene-styrene radial block copolymer having a butadiene content of between 50% and 85% by weight and a molecular weight of at least 150,000, and a filler material contributing at least one-half of the weight of the ball centre. An additional butadiene-styrene copolymer may be used which has 50% - 85% by weight of butadiene and a molecular weight of at least 300,000. The preferred filler is Barium Sulphate. An extender of Paraffinic oil and an antioxidant of a Phenol may also be incorporated.
Description
SPECIFICATION
Solid golf ball center
This invention relates to thermoplastic polymers which are useful in molding centers for golf balls. More particularly, it relates to the use of thermoplastic polymers composed of block radial polymers of the dienearyl substituted olefin butadiene-styrene type which contains a major portion of a filler material as well as an extender to form a gold ball center having high rebound characteristics as well as offering versatility in meeting manufacturing specifications.
Currently golf balls are produced in the following forms:
1. A one component solid construction composed of a homogeneous mass consisting of polybutadiene, monomers, fillers, antioxidants, curing agents, etc.
2. Atwo component golf ball comprising a cover composed of natural rubber (Balata) or plastic (Surlyn) including urethanes; and a core composed of a solid homogeneous mass similar two Item #1.
3. A three component golf ball composed of a cover composed of Balata rubber, plastic (Surlyn) or similar material; a winding composed of natural and/or synthetic rubberthread; and a core made from natural or synthetic polymers.
4. A four component golf ball having a cover as described in Items 2 and 3; a winding as described in
Item 3; a core wall made from natural and/or synthetic rubber; and a liquid center composed of glycerin, polyethylene glycol, salt solutions, etc.
The golf ball center of the type concerned with in this invention is the Center or Core in Item 3.
Block copolymers of butadiene-styrene and styrene-butadiene-styrene type are described in U.S. Patent 3,534,965 to produce a solid golf ball. The block copolymers are blended and cured to result in the solid golf ball. Styrene-butadiene copolymers are also vulcanized in a blend with a polytetrahydrofuran to form a molded golf ball in U.S. 3,373,123. In U.S. Patents 4,048,254 and 4,048,255 blends of uncured radial block copolymers are described for use with a third polymeric material for use in making thermoplastic materials for pharmaceutical purposes. The prior art nowhere describes an uncured, butadiene-styrene radial block copolymer having a specific butadiene and styrene content in combination with a major portion of a filler material for use in the manufacture of a solid golf ball center.Neither does the prior art indicate that an uncured butadiene-styrene radial block copolymer can be employed in formulations for composing golf ball centers wherein the use of fillers and extenders can be freely incorporated to obtain centers having high rebound and various durometers.
It is an advantage of the present invention to provide a solid golf ball center composed of an uncured butadiene-styrene radial block copolymer. Other advantages are a solid golf ball center containing a major portion of filler material as well as extenders so as to permit versatility in achieving desired properties for a golf ball; a solid golf ball center which can be molded by various molding techniques including injection moulding so as to afford rapid production as well as size and weight control; a solid golf ball composition which eliminates the need for curing and permits the reuse of trim and runner system material.
The foregoing advantages are accomplished and the shortcomings of the prior art are overcome by the present solid golf ball center which includes a noncross-linked block butadiene-styrene radial block copolymer having a butadiene content in the range of about 50 - 85% by weight and a styrene content in the range of about 15 - 50% by weight. A major portion of the golf ball center includes a filler material with the noncross-linked butadiene-styrene radial block copolymer as well as an extender in the form of an oil. The radial block copolymer will have a molecular weight of at least 150,000 and can be as high as 300,000. In one embodiment of the invention, two radial block copolymers will be employed having different butadienestyrene contents.In a preferred embodiment, the filler material will be present in an amount of about 60 80% by weight of the golf ball center and the extender present in the range of about 5 - 20% by weight of tota center composition.
The radial block copolymers utilized in the following Examples are readily available on the commercial market and are composed of 50 - 85% by weight of butadiene and 15 - 50% by weight of styrene. The radial block copolymers have a molecular weight ranging from 150,000 to 300,000 as measured by inherent viscosity in toluene; and a specific gravity ranging from 0.92 to 0.95. The preferred radial black copolymers are sold under the trade-name SOLPRENE and available from the Phillips Petroleum Company.
The invention is disclosed in further detail by means of the following Examples which are set forth for the purpose of illustrating the invention, but, in no way are to be construed as limiting the invention to the precise amounts, ingredients or conditions indicated.
Example I
Ingredients Formula byParts(phr*) Radial Block Copolymer
(80:20 Butadiene-Styrene) 75
Radial Block Copolymer
(70:30 Butadiene-Styrene) 25
Filler
(Barium Sulfate) 220
Extender
(Paraffinic Oil) 25
Antioxidant
(Hindered Phenol) 1.0
346.0
*Parts/Hundred/Rubber Polymer
The barium sulfate and the antioxidant are placed in a Banbury-type internal mixer of suitable capacity.
The mixing device is operated for 30 seconds after which the radial block copolymers are added and approximately one-third of the paraffinic oil. Mixing is subsequently effected until three minutes after which an additional one-third of the paraffinic oil is added and after four minutes the balance of the paraffinic oil is added. The mixing unit is operated for an additional minute to bring the total mixing time to five minutes.
After this time, the entire ingredients are dumped from the mixer at a temperature of 100 - 125 degrees C.
onto mill rolls which should have a temperature in the range of 75 - 85 C. for the stripping off of the material and its cooling. The cooled material can then be diced into a 1/8 - 3116 inch cube for later injection molding.
The golf ball centers are then injection molded by any suitable injection molding device and will have a weight in the range of about 15 grams to about 22 grams and a diameter of 1-1/32 inch. The solid core center will then be wound in a usual manner with natural and/or synthetic rubber thread and covered with a natural rubber (Balata), plastic (Surlyn) or similar material.
Example II Ingredients Formula by
Parts (phr*)
Radial Block Copolymer
(80:20 Butadiene
Styrene 50
Radial Block Copolymer
(70:30 Butadiene
Styrene 50
Filler
(Barium Sulfate) 490
Extender
(Paraffinic Oil) 100
Antioxidant
(Hindered Phenol) 0.5
690.5
*Parts/Hundred/Rubber Polymer
The radial block copolymers, the barium sulfate and the antioxidant are placed in a high speed intensive mixer. The added materials are mixed for approximately 30 seconds after which time the paraffinic oil is added with the blender being operated at 1200 rpm. 40 - 50 phr of oil should be added over approximately 40 - 60 seconds to add 40 - 50 phr of oil. The mixing is continued at 1500 rpm until the compound appears to be free flowing. After this period of time the mixer is operated at 2000 to 2500 rpm for an additional 30 seconds.
After approximately 1-1/2 minutes of blending, the mixed material is dumped into a ribbon blender and cooled to a temperature of 35 degrees (C). The cooled and mixed material can then be pelletized in the usuat manner from an extruderfor later injection molding and final fabrication of the golf ball as indicated in
Example I.
The type of blending equipment utilized in the Examples will depend upon what physical form the radial block copolymer is in when supplied. For example, if it is in the form of a bale, a Banbury-type internal mixer would only be used with a cooling facility and take-off. In the instance where it would be supplied in the form of a crumb or pelleted a Banbury mixer could likewise be employed and also a high-speed, intensive dry blender such as a Welex, Littleford, Henschel or equivalent equipment with a ribbon blender for cooling. The
Banbury mixer will accommodate all three forms and has the advantage that it will accommodate higher use of fillers and extenders without fear of separation of the ingredients from the polymer. In contrast, the dry blend mixing offers the advantage of faster mixing cycles; lower power consumption; elimination of the take-off mill of the Banbury mixer.The material can be processed directly from the dry blend into a plastic processing equipment such as an injection molding machine.
Table I indicates additional formulations of the radial block copolymers where only a single radial block copolymer is employed. These formulations as well as those in Table II will be compounded as indicated in
Example I and II. Table I also designates the percent of rebound and durometer for these various formulations. Similarly, Table II lists formulations for two radial block copolymers similar to Examples I and
II. Table II illustrates the use of the block copolymers with different butadiene-styrene contents and in ratios in the range of 25-75:75-25 parts by weight.
It will be seen from the various formulations that the filler material as represented by barium sulfate composes a major portion of the weight of the golf ball center. The amount of this material can range from about 60% to about 80% by weight of the golf ball center. While barium sulfate (Barytes) is the preferred filler material the following filler materials could likewise be employed in the same weight range: calcium carbonate, aluminum silicate, fumed colloidal silica (Carbosil), silica, magnesium silicate, carbon black, calcined aluminum silicate, precipitated hydrated silica, zinc sulfide (Lithophone), magnesium carbonate, hydrated aluminum silicate, wet ground mica and silicon dioxide.
An extender in the form of a paraffinic oil is utilized in the various formulations. If desired, it can be eliminated. If utilized, the amount can range from about 5% to 20% by weight of the golf ball center. While a paraffinic type is preferred and preferably of the mineral-oil type, other oil-type extenders of the napthenic variety could likewise be utilized with the aromatic oils being the least desired. This is indicated by the data presented in Table lit concerning rebound and durometer properties.
In Table IV, the variation in weights of the golf ball center is indicated in relation to the specific gravity required as well as the weight of the filler material. This Table indicates the versatility in obtaining the golf ball center with the desired weight.
From the information given in the Tables, it will be seen that the low styrene content and high butadiene content results in a golf ball center with high rebound capabilities. Those formulations which give high durometers indicate that the use of fillers and extenders can be freely employed to obtain the desired properties of a golf ball center. Specifically, Table III illustrates that the best golf ball centers for rebound are produced using the higher proportions of extenders which the paraffinic oil being preferred.
From the information presented in Tables I and II, it will be seen that a radial block copolymer having a molecular weight of 160,000 and a butadiene-styrene amount of 80, 20% respectively is preferred whether the copolymer is used alone or in combination with another radial block copolymer. It will be seen with reference to Table II that the preferred radial block copolymer mixtures of this invention have different molecular weights yet can have the same or different butadiene-styrene amounts. In two of the preferred formulations listed in Table II, it will be seen that one of the radial block copolymers has a molecular weight of 16Q,000 or 150,000 and the other has a molecular weight of 300,000.
It will thus be seen that through the present invention there is now provided a formulation for a golf ball center which allows for a large latitude in formulation so as to accomplish the specific performance specifications. The utilization of an uncured radial block copolymer also affords injection molding with faster rates in that no curing or time consuming cross linkage need take place. Also, any finished materials which do not meet specifications can be reused, which is not possible when using a cross-linked polymeric material. Additionally, the injection molding process with the butadiene-styrene thermoelastomers permits precise size and weight control which is not accomplished when utilizing compression molding.
TABLE I
Polymer Mol
Radial x 1000 % Sty- % Buta
Block Wt Oil rene diene A B C D E F G H 1 160 No 20 80 100.0 2 300 Yes 30 70 100.0 3 300 No 15 85* 100.0 4 150 No 30 70 100.0 5 300 No 30 70 100.0 6 150 No 40 60 100.0 7 250 No 40 60 100.0 8 300 Yes 50 50 100.0
Filler 170.0 170.0 170.0 170.0 170.0 170.0 170.0 170.0
Antioxidant .5 .5 .5 .5 .5 .5 .5 .5 270.5 270.5 270.5 270.5 270.5 270.5 270.5 270.5 *85% Isoprene in place of Butadiene
%Rebound 65 57 55 51 40 37 32 25
Shore A Durometer 80 70 65 95 100 100 100 90
Specific Gravity (Actual) 1.830 1.846 1.853 1.832 1.878 1.859 1.852 1.841 TABLE II
Polymer Mol
Radial x 100 % Sty- % Buta
Block Wt Oil rene diene A B C D E F G H I 1 160 No 20 80 50.0 75.0 75.0 75.0 75.0 75.0 2 300 Yes 30 70 50.0 75.0 75.0 3 300 No 15 85* 4 150 No 30 70 25.0 25.0 75.0 5 300 No 30 70 25.0 25.0 6 150 No 40 60 25.0 25.0 7 250 No 40 60 25.0 8 300 Yes 50 50 25.0
Filler 170.0 170.0 170.0 170.0 170.0 170.0 170.0 170.0 170.0
Antioxidant .5 .5 .5 .5 .5 .5 .5 .5 .5 270.5 270.5 270.5 270.5 270.5 270.5 270.5 270.5 270.5 *85% Isoprene in place of Butadiene
%Rebound 66 65 66 65 65 63 60 56 53
Shore A Durometer 73 75 82 85 80 85 85 80 95
Specific Gravity (Actual) 1.823 1.842 1.853 1.821 1.774 1.833 1.820 1.838 1.843 TABLE III
spa 5: 8 9 9 Ir! o 9'OZE o 169'1 IL O U) tD S g6Z tD ID LZL L cu cr, Wt S bg-L 150 No tD 170.0 170.0 170.0 170.0 170.0 170.0 Filler S 9'96Z o o .5 ZbL'l N n s) 4'9PE Paraffinic 25 50 75 Extender Paraffinic L9'L LO b - tD S'96Z S - ZZL'L cu a, S g'9b 0 S P9t71 25 50 75 Extender 9'0Z o S 25 50 75 ogR Ln, '96 9 96Z tD 25 50 75 jD 9'9b t to to to to to. to to to to to to to to to to d 9'0Z n Ld S to to o OO9'L a) a) a) c a) a) a) m Cr) o Cr) Cr) m o 9'OZE tD Cur) n 009'1 mgR LO m S Rebound 40 55 65 40 53 64 35. 50 60 35 40 52 30 30 80E-l Shore A Durometer 90 75 65 80 75 55 90S L 95 70 50 90 80 65 85 70 65 oorn to cc Co g OZ 0 cc jn 9 t L9 Cr) L 0 0 0 cc 0 cc to a) to to cc to toto cc g ~ cc ,0, co LLL-L .~ .~ .~ O O o o H c o | v c c L s ) Q Q O m F X X z z 6 Z < > ) O E O Z o o o X O E g IOD F c X v x r n r x r r o 6 o X = x x x Hx wx x z cL c: m h < TABLE IV
Approx. Weight Approx. Weight of Filler @ 4.4 of Filler @ 4.4
Center Weight Specific Gravity Specific Grav. Center Weight Specific Gravity Specific Grav.
Required (Grams) Required (Grams) Required (Grams) Required (Grams) 15.0 1.594 110 18.6 1.977 201 15.2 1.615 114 18.8 1.998 209 15.4 1.637 118 19.0 2.019 214 15.6 1.658 124 19.2 2.040 220 15.8 1.679 130 19.4 2.062 226 16.0 1.700 135 19.6 2.083 233 16.2 1.722 140 19.8 2.104 240 16.4 1.743 144 20.0 2.125 247 16.6 1.764 148 20.2 2.147 253 16.8 1.735 152 20.4 2.168 260 17.0 1.807 158 20.6 2.189 268 17.2 1.828 162 20.8 2.210 274 17.4 1.849 167 21.0 2.232 280 17.6 1.870 174 21.2 2.255 288 17.8 1.892 180 21.4 2.274 296 18.0 1.913 185 21.6 2.295 303 18.2 1.934 190 21.8 2.310 310 18.4 1.955 195 22.0 2.338 320
Claims (21)
1. A solid golf ball center having a substantially spherical form comprising:
(a) a noncross-linked, butadiene-styrene radial block copolymer having a butadiene content in the range of about 50% to 85% by weight and a styrene content in the range of about 15% to 50% by weight; and
(b) a filler material; said filler material composing the major portion by weight of said golf ball center and said radial block copolymer having a molecular weight of at least 150,000 as measured by inherent viscosity in toluene.
2. The solid golf ball center as defined in Claim 1 including an extender which is a paraffinic or naphthenic oil.
3. The solid golf ball center as defined in Claim 1 wherein said golf ball center has a weight in the range of about 15 grams to about 22 grams.
4. The solid golf ball center as defined in Claim 1 wherein said filler material is present in the range of about 60% to about 80% by weight of the golf ball center.
5. The solid golf ball center as defined in Claim 2 wherein said extender is present in an amount in the range of about 5% to 20% by weight of the golf ball center.
6. The solid golf ball center as defined in Claim 1 wherein said butadiene is represented by 85% by weight of isoprene.
7. The solid golf ball center as defined in Claim 4wherein said filler material is barium sulfate.
8. The solid golf ball center as defined in Claim 1 wherein the butadiene-styrene radial block copolymer has a molecular weight of about 160,000.
9. The solid golf ball center as defined in Claim 8 further including an additional butadiene-styrene radial block copolymer in addition to the first mentioned copolymer and having a butadiene content in the range of about 50% to 85% by weight and a styrene content in the range of about 50% to 15% by weight and a molecular weight of about 300,000, said additional copolymer having different butadiene-styrene amounts than said first copolymer with said copolymers being present in equal weight amounts.
10. The solid golf ball center as defined in Claim 1 further including an additional butadiene-styrene radial block copolymer having a butadiene content in the range of about 50% to 85% by weight and a styrene content in the range of about 50% to 15% by weight.
11. The solid golf ball center as defined in Claim 10 wherein said copolymers have different butadiene-styrene amounts.
12. The solid golf ball center as defined in Claim 10 wherein said copolymers have the same butadiene-styrene amounts.
13. The solid golf ball center as defined in Claim 10 wherein said additional radical block copolymer has a molecular weight of about 300,000.
14. The solid golf ball center as defined in Claim 10 wherein said radial block copolymers are present in the range of about 25-75:75-25 parts by weight.
15. The solid golf ball center as defined in Claim 1 wherein the amount of butadiene is 80% by weight and the amount of styrene is 20%.
16. A composition useful in fabricating a solid golf ball center comprising:
(a) a noncross-linked, butadiene-styrene radial block copolymer having a butadiene content in the range of about 50% to 85% by weight and a styrene content in the range of about 15% to 50% by weight; and
(b) a filter material; said filter material composing the major portion by weight of said composition and said radial block copolymer having a molecular weight of at least 150,000 as measured by inherent viscosity in toluene.
17. The composition as defined in Claim 16 wherein said filler material is present in the range of about 60% to about 80% by weight of the total composition.
18. The composition as defined in Claim 16 further including an extender which is present in an amount of about 5% to 20% by weight of the total composition.
19. The composition as defined in Claim 16 further including an additional butadiene-styrene radial block copolymer having a butadiene content in the range of about 50% to 85% by weight and a styrene content in the range of about 50% to 15% by weight.
20. The composition as defined in Claim 19 wherein one block copolymer has a molecular weight of about 160,000 and the other a molecular weight of about 300,000.
21. A solid golf ball center produced according to any of the Examples herein.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US94595078A | 1978-09-26 | 1978-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2032287A true GB2032287A (en) | 1980-05-08 |
| GB2032287B GB2032287B (en) | 1982-10-06 |
Family
ID=25483745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7930763A Expired GB2032287B (en) | 1978-09-26 | 1979-09-05 | Solid uncured golf ball centre |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5545498A (en) |
| CA (1) | CA1147089A (en) |
| CH (1) | CH641966A5 (en) |
| DE (1) | DE2938752A1 (en) |
| FR (1) | FR2437223A1 (en) |
| GB (1) | GB2032287B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61125359A (en) * | 1984-11-20 | 1986-06-13 | 株式会社ブリヂストン | Yarn wound golf ball |
| JP2664857B2 (en) * | 1993-07-30 | 1997-10-22 | 住友ゴム工業株式会社 | Thread wound golf ball |
| DE19616111C1 (en) * | 1996-04-23 | 1997-10-02 | Physikalisch Tech Studien Gmbh | Golf ball |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1345451A (en) * | 1972-01-22 | 1974-01-30 | Waddington Ltd J | Packages |
| US4051197A (en) * | 1975-11-10 | 1977-09-27 | Phillips Petroleum Company | Blend of radial block copolymers having high impact strength |
-
1979
- 1979-09-05 CA CA000335031A patent/CA1147089A/en not_active Expired
- 1979-09-05 GB GB7930763A patent/GB2032287B/en not_active Expired
- 1979-09-25 JP JP12213179A patent/JPS5545498A/en active Pending
- 1979-09-25 DE DE19792938752 patent/DE2938752A1/en active Granted
- 1979-09-25 FR FR7923823A patent/FR2437223A1/en active Granted
- 1979-09-25 CH CH863179A patent/CH641966A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5545498A (en) | 1980-03-31 |
| CH641966A5 (en) | 1984-03-30 |
| FR2437223A1 (en) | 1980-04-25 |
| DE2938752C2 (en) | 1989-03-16 |
| CA1147089A (en) | 1983-05-24 |
| GB2032287B (en) | 1982-10-06 |
| FR2437223B3 (en) | 1981-07-31 |
| DE2938752A1 (en) | 1980-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |