JP5073394B2 - ゴルフボール - Google Patents
ゴルフボール Download PDFInfo
- Publication number
- JP5073394B2 JP5073394B2 JP2007187458A JP2007187458A JP5073394B2 JP 5073394 B2 JP5073394 B2 JP 5073394B2 JP 2007187458 A JP2007187458 A JP 2007187458A JP 2007187458 A JP2007187458 A JP 2007187458A JP 5073394 B2 JP5073394 B2 JP 5073394B2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- golf ball
- polyol
- mass
- core
- 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.)
- Expired - Fee Related
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- 150000003077 polyols Chemical class 0.000 claims description 81
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- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 67
- 239000000203 mixture Substances 0.000 claims description 65
- -1 azo compound Chemical class 0.000 claims description 33
- 229920002857 polybutadiene Polymers 0.000 claims description 28
- 239000005062 Polybutadiene Substances 0.000 claims description 25
- 238000004132 cross linking Methods 0.000 claims description 15
- 239000000470 constituent Substances 0.000 claims description 13
- 239000007870 radical polymerization initiator Substances 0.000 claims description 12
- 150000001451 organic peroxides Chemical class 0.000 claims description 11
- 239000003431 cross linking reagent Substances 0.000 description 42
- 229920001971 elastomer Polymers 0.000 description 36
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 30
- 229920005989 resin Polymers 0.000 description 30
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- 239000005060 rubber Substances 0.000 description 30
- 150000001993 dienes Chemical class 0.000 description 18
- GUUVPOWQJOLRAS-UHFFFAOYSA-N Diphenyl disulfide Chemical class C=1C=CC=CC=1SSC1=CC=CC=C1 GUUVPOWQJOLRAS-UHFFFAOYSA-N 0.000 description 16
- 238000000465 moulding Methods 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 11
- 239000002585 base Substances 0.000 description 11
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 10
- 239000000047 product Substances 0.000 description 10
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 6
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 6
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- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 6
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- 125000003277 amino group Chemical group 0.000 description 6
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- 229910052725 zinc Inorganic materials 0.000 description 6
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- 238000004519 manufacturing process Methods 0.000 description 5
- 229910021645 metal ion Inorganic materials 0.000 description 5
- ZQMHJBXHRFJKOT-UHFFFAOYSA-N methyl 2-[(1-methoxy-2-methyl-1-oxopropan-2-yl)diazenyl]-2-methylpropanoate Chemical compound COC(=O)C(C)(C)N=NC(C)(C)C(=O)OC ZQMHJBXHRFJKOT-UHFFFAOYSA-N 0.000 description 5
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- LGXISKQYIKXYTC-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[(2,3,4,5,6-pentabromophenyl)disulfanyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1SSC1=C(Br)C(Br)=C(Br)C(Br)=C1Br LGXISKQYIKXYTC-UHFFFAOYSA-N 0.000 description 4
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 206010000496 acne Diseases 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
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- 239000000049 pigment Substances 0.000 description 4
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- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- 239000012463 white pigment Substances 0.000 description 4
- NNOZGCICXAYKLW-UHFFFAOYSA-N 1,2-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC=C1C(C)(C)N=C=O NNOZGCICXAYKLW-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 150000004984 aromatic diamines Chemical class 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- FVQMJJQUGGVLEP-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOOC(C)(C)C FVQMJJQUGGVLEP-UHFFFAOYSA-N 0.000 description 2
- LSVXAQMPXJUTBV-UHFFFAOYSA-N 1,2,3,4,5-pentachloro-6-[(2,3,4,5,6-pentachlorophenyl)disulfanyl]benzene Chemical compound ClC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1SSC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl LSVXAQMPXJUTBV-UHFFFAOYSA-N 0.000 description 2
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 2
- ZZOCRFAYVJWKBF-UHFFFAOYSA-N 1,3,5-trichloro-2-[(2,4,6-trichlorophenyl)disulfanyl]benzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1SSC1=C(Cl)C=C(Cl)C=C1Cl ZZOCRFAYVJWKBF-UHFFFAOYSA-N 0.000 description 2
- VFBSQBTUKCZKTI-UHFFFAOYSA-N 1,3-dibromo-5-[(3,5-dibromophenyl)disulfanyl]benzene Chemical compound BrC1=CC(Br)=CC(SSC=2C=C(Br)C=C(Br)C=2)=C1 VFBSQBTUKCZKTI-UHFFFAOYSA-N 0.000 description 2
- LSMZVCLPPFOFNM-UHFFFAOYSA-N 1,3-dichloro-2-[(2,6-dichlorophenyl)disulfanyl]benzene Chemical compound ClC1=CC=CC(Cl)=C1SSC1=C(Cl)C=CC=C1Cl LSMZVCLPPFOFNM-UHFFFAOYSA-N 0.000 description 2
- JMQANWHMOHXBEA-UHFFFAOYSA-N 1,3-dichloro-5-[(3,5-dichlorophenyl)disulfanyl]benzene Chemical compound ClC1=CC(Cl)=CC(SSC=2C=C(Cl)C=C(Cl)C=2)=C1 JMQANWHMOHXBEA-UHFFFAOYSA-N 0.000 description 2
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- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
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- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- 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
- A63B37/0023—Covers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6505—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6511—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38 compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
- C08G18/698—Mixtures with compounds of group C08G18/40
-
- 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
- A63B37/0023—Covers
- A63B37/0029—Physical properties
- A63B37/0031—Hardness
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Description
で求めることができる。
で求めることができる。なお、不飽和炭素−炭素結合を有するポリオールは、繰返し単位に含まれない水酸基などを有するが、これらの分子量は、数平均分子量Mn1に比べて十分に小さいため、不飽和炭素−炭素結合個数Xを算出する際は、これらの水酸基の分子量は無視するものとする。
(1)耐擦過傷性
ゴルフラボラトリー社製のスイングロボットに市販のサンドウエッジ(シャフト S)を取り付け、ヘッドスピード36m/秒でボールの2箇所を各1回打撃し、打撃部を観察して、4段階で評価した。
評価基準
◎:ゴルフボールの表面にほとんど傷がない。
○:ゴルフボールの表面に傷がわずかに生じる。
△:ゴルフボールの表面が少し削れており、毛羽立ちが生じている。
×:ゴルフボールの表面がかなり削れており、毛羽立ちが目立つ。
ツルーテンパー社製のスイングロボットにメタルヘッド製#W1ドライバー(SRIスポーツ製、XXIO S 11度)を取り付け、各ゴルフボールをヘッドスピード45m/秒で打撃して衝突板に衝突させた。これを繰り返して、ゴルフボールが壊れるまでの打撃回数を測定した。各ゴルフボールの耐久性は、ゴルフボールNo.3の打撃回数を100として、各ゴルフボールについての打撃回数を指数化した値で示した。指数化された値が大きいほど、ゴルフボールが耐久性に優れていることを示す。
カバー用組成物または中間層用組成物を用いて、熱プレス成形により、厚み約2mmのシートを作製し、23℃で2週間保存した。このシートを、測定基板等の影響が出ないように、3枚以上重ねた状態で、ASTM−D2240に規定するスプリング式硬度計ショアD型を備えた高分子計器社製自動ゴム硬度計P1型を用いて測定した。
JIS−K 6301に規定するスプリング式硬度計C型を用いて、球状コアの表面部において測定したJIS−C硬度をコアの表面硬度とし、球状コアを半球状に切断し、切断面の中心において測定したJIS−C硬度をコアの中心硬度とした。
(1)コアの作製
コアAの作製
表1に示す配合のコア用ゴム組成物を混練し、半球状キャビティを有する上下金型内で160℃×13分間加熱プレスすることにより直径40.7mmの球状コアAを得た。
コアBの作製
表1に示す配合のセンター用ゴム組成物を混練し、半球状キャビティを有する上下金型内で170℃×15分間加熱プレスすることにより直径38.5mm、質量34.9gの球状センターBを得た。表1に示した配合の中間層材料を、二軸混練型押出機によりミキシングして、ペレット状の中間層用組成物を調製した。押出は、スクリュー径45mm、スクリュー回転数200rpm、スクリューL/D=35で行った。配合物は、押出機のダイの位置で150〜230℃に加熱された。得られた中間層用組成物を上述のようにして得られたセンターB上に射出成形して、センターと前記センターを被覆する中間層(厚み1.6mm)とを有するコアBを作製した。
酸化亜鉛:商品名「銀嶺R」 東邦亜鉛株式会社製
アクリル酸亜鉛:商品名「ZNDA−90S」 日本蒸留工業株式会社製
硫酸バリウム:商品名「硫酸バリウムBD」 堺化学製
ジフェニルジスルフィド:住友精化株式会社製
ジクミルパーオキサイド:商品名「パークミルD」 日本油脂株式会社製
ハイミラン1605:三井デュポンポリケミカル(株)製のナトリウムイオン中和エチレン−メタクリル酸共重合体アイオノマー樹脂
ハイミランAM7329:三井デュポンポリケミカル社製の亜鉛イオン中和エチレン−メタクリル酸共重合体系アイオノマー樹脂
次に、表2に示した配合のカバー材料を、タンブラー型混合機によりドライブレンドしてカバー用組成物を作製し、得られたカバー用組成物をコア上に直接射出成形することにより、前記コアを被覆するカバーを作製した。カバー成形用上下金型は、半球状キャビティを有し、ピンプル付きで、ピンプルの一部が進退可能なホールドピンを兼ねている。上記ホールドピンを突き出し、コアを投入後ホールドさせ、80トンの圧力で型締めした金型に210℃に加熱した樹脂を0.3秒で注入し、30秒間冷却して型開きしてゴルフボールを取り出した。得られたゴルフボール本体の表面をサンドブラスト処理して、マーキングを施した後、クリアーペイントを塗布し、40℃のオーブンで塗料を乾燥させ、直径42.7mm、質量45.3gのゴルフボールを得た。
得られたゴルフボールの耐擦過傷性及び耐久性について評価した結果を併せて表2に示した。
熱可塑性ポリウレタンBD10:BASF社製 H12MDI−ポリオール−1,4−BD系熱可塑性ポリウレタン(ポリオール成分:PTMG/ポリブタジエンポリオール=90/10(モル比) ショアA硬度85、二重結合個数1.3×10-3モル/g)
熱可塑性ポリウレタンBD30:BASF社製 H12MDI−ポリオール−1,4−BD系熱可塑性ポリウレタン(ポリオール成分:PTMG/ポリブタジエンポリオール=70/30(モル比) ショアA硬度85、二重結合個数3.7×10-3モル/g)
熱可塑性ポリウレタンBD60:BASF社製 H12MDI−ポリオール−1,4−BD系熱可塑性ポリウレタン(ポリオール成分:PTMG/ポリブタジエンポリオール=40/60(モル比) ショアA硬度85、二重結合個数6.9×10-3モル/g)
熱可塑性ポリウレタンBD70:BASF社製 H12MDI−ポリオール−1,4−BD系熱可塑性ポリウレタン(ポリオール成分:PTMG/ポリブタジエンポリオール=30/70(モル比) ショアA硬度85、二重結合個数7.9×10-3モル/g)
熱可塑性ポリウレタンBD100:BASF社製 H12MDI−ポリブタジエンポリオール−1,4−BD系熱可塑性ポリウレタン(ショアA硬度85、二重結合個数10.8×10-3モル/g)
なお、上記熱可塑性ポリウレタンBD0,BD10,BD30,BD60,BD70,BD100において、PTMGの数平均分子量は2000、ポリブタジエンポリオールの数平均分子量は2800である。
パークミルD:日本油脂株式会社製 ジクミルパーオキサイド(10時間半減期116.4℃(ベンゼン中における熱分解:過酸化物濃度0.10mol/L))
V−601:和光純薬工業製 ジメチル2,2’−アゾビス(2−メチルプロピオネート)(10時間半減期66℃(トルエン中))
酸化チタン:品番「A220」 石原産業製
Claims (3)
- コアと、前記コアを被覆するカバーとを有するゴルフボールであって、
前記カバーは、不飽和炭素−炭素結合を有するポリブタジエンポリオールを構成成分として有する熱可塑性ポリウレタン100質量部に対して、有機過酸化物またはアゾ化合物から選択される10時間半減期が60℃以上であるラジカル重合開始剤を0.05質量部〜5質量部含有するカバー用組成物から形成されており、
前記カバーは、前記熱可塑性ポリウレタンの不飽和炭素−炭素結合部分が前記ラジカル重合開始剤によって架橋されており、
前記熱可塑性ポリウレタンを構成するポリオール成分中の前記不飽和炭素−炭素結合を有するポリブタジエンポリオールの含有率が、5モル%〜60モル%であることを特徴とするゴルフボール。 - 前記熱可塑性ポリウレタンが、前記ラジカル重合開始剤による架橋前に、単位質量当たりに有する不飽和炭素−炭素結合の個数は、0.3×10−3モル/g以上、7.9×10−3モル/g未満である請求項1項に記載のゴルフボール。
- 前記カバー用組成物のスラブ硬度は、ショアD硬度で30〜70である請求項1または2に記載のゴルフボール。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007187458A JP5073394B2 (ja) | 2007-07-18 | 2007-07-18 | ゴルフボール |
| US12/219,191 US7999054B2 (en) | 2007-07-18 | 2008-07-17 | Golf ball |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007187458A JP5073394B2 (ja) | 2007-07-18 | 2007-07-18 | ゴルフボール |
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| JP2009022465A JP2009022465A (ja) | 2009-02-05 |
| JP5073394B2 true JP5073394B2 (ja) | 2012-11-14 |
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| JP (1) | JP5073394B2 (ja) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9717957B2 (en) | 2013-08-05 | 2017-08-01 | Acushnet Company | Multi-layer core golf ball |
| US9643060B2 (en) | 2008-01-10 | 2017-05-09 | Acushnet Company | Multi-layer core golf ball |
| US8039573B2 (en) * | 2008-05-16 | 2011-10-18 | Acushnet Company | Dual cured castable polyurethane system for use in golf balls |
| JP5124534B2 (ja) | 2009-06-30 | 2013-01-23 | ダンロップスポーツ株式会社 | ゴルフボール |
| JP5072910B2 (ja) * | 2009-06-30 | 2012-11-14 | ダンロップスポーツ株式会社 | ゴルフボール |
| JP5182764B2 (ja) * | 2009-06-30 | 2013-04-17 | 睦久 古川 | ゴルフボール |
| EP2510460A4 (en) | 2009-12-10 | 2013-05-08 | Nokia Corp | PROCESS, DEVICE OR PICTURE PROCESSING SYSTEM |
| JP4927930B2 (ja) * | 2009-12-16 | 2012-05-09 | Sriスポーツ株式会社 | ゴルフボール用材料およびこれを用いたゴルフボール |
| US20120115637A1 (en) | 2010-06-30 | 2012-05-10 | Nike, Inc. | Golf Balls Including A Crosslinked Thermoplastic Polyurethane Cover Layer Having Improved Scuff Resistance |
| US8193296B2 (en) * | 2010-06-30 | 2012-06-05 | Nike, Inc. | Golf balls including crosslinked thermoplastic polyurethane |
| JP5455845B2 (ja) * | 2010-08-26 | 2014-03-26 | ダンロップスポーツ株式会社 | ゴルフボール |
| JP5484261B2 (ja) * | 2010-08-27 | 2014-05-07 | ダンロップスポーツ株式会社 | ゴルフボールカバー用材料およびこれを用いたゴルフボール |
| US9089739B2 (en) | 2011-08-23 | 2015-07-28 | Nike, Inc. | Multi-core golf ball having increased initial velocity |
| US8979676B2 (en) | 2011-08-23 | 2015-03-17 | Nike, Inc. | Multi-core golf ball having increased initial velocity at high swing speeds relative to low swing speeds |
| US9649539B2 (en) | 2012-04-20 | 2017-05-16 | Acushnet Company | Multi-layer core golf ball |
| US9592425B2 (en) | 2012-04-20 | 2017-03-14 | Acushnet Company | Multi-layer core golf ball |
| US9737764B2 (en) | 2013-08-05 | 2017-08-22 | Acushnet Company | Multi-layer core golf ball |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6435986B1 (en) * | 1999-12-03 | 2002-08-20 | Acushnet Company | Golf ball comprising water resistant polyurethane elastomers and methods of making the same |
| US7417107B2 (en) * | 2002-02-06 | 2008-08-26 | Acushnet Company | Compositions for use in golf balls |
| US6924337B2 (en) * | 2002-11-20 | 2005-08-02 | Taylor Made Golf Company, Inc. | Golf balls incorporating urethane compositions and methods for making them |
| JP2005027781A (ja) * | 2003-07-09 | 2005-02-03 | Sumitomo Rubber Ind Ltd | ゴルフボール |
| JP2006223874A (ja) * | 2005-02-18 | 2006-08-31 | Acushnet Co | センターほど遅くカバーほど速い速度勾配を有する多層ゴルフボール |
| US20070270242A1 (en) * | 2006-05-17 | 2007-11-22 | Callaway Golf Company | Polybutadiene diols for unique polyurethane |
| US8039573B2 (en) * | 2008-05-16 | 2011-10-18 | Acushnet Company | Dual cured castable polyurethane system for use in golf balls |
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| US20090023515A1 (en) | 2009-01-22 |
| JP2009022465A (ja) | 2009-02-05 |
| US7999054B2 (en) | 2011-08-16 |
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