JP5916382B2 - ゴルフボール用樹脂組成物およびゴルフボール - Google Patents
ゴルフボール用樹脂組成物およびゴルフボール Download PDFInfo
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- JP5916382B2 JP5916382B2 JP2011289986A JP2011289986A JP5916382B2 JP 5916382 B2 JP5916382 B2 JP 5916382B2 JP 2011289986 A JP2011289986 A JP 2011289986A JP 2011289986 A JP2011289986 A JP 2011289986A JP 5916382 B2 JP5916382 B2 JP 5916382B2
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- BDWBGSCECOPTTH-UHFFFAOYSA-N pentacos-1-ene Chemical compound CCCCCCCCCCCCCCCCCCCCCCCC=C BDWBGSCECOPTTH-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- NNNVXFKZMRGJPM-KHPPLWFESA-N sapienic acid Chemical compound CCCCCCCCC\C=C/CCCCC(O)=O NNNVXFKZMRGJPM-KHPPLWFESA-N 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- JIWBIWFOSCKQMA-UHFFFAOYSA-N stearidonic acid Natural products CCC=CCC=CCC=CCC=CCCCCC(O)=O JIWBIWFOSCKQMA-UHFFFAOYSA-N 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- QZZGJDVWLFXDLK-UHFFFAOYSA-N tetracosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCC(O)=O QZZGJDVWLFXDLK-UHFFFAOYSA-N 0.000 description 1
- IBYFOBGPNPINBU-UHFFFAOYSA-N tetradecenoic acid Natural products CCCCCCCCCCCC=CC(O)=O IBYFOBGPNPINBU-UHFFFAOYSA-N 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 150000003566 thiocarboxylic acids Chemical class 0.000 description 1
- WXBXVVIUZANZAU-CMDGGOBGSA-N trans-2-decenoic acid Chemical compound CCCCCCC\C=C\C(O)=O WXBXVVIUZANZAU-CMDGGOBGSA-N 0.000 description 1
- HOGWBMWOBRRKCD-BUHFOSPRSA-N trans-2-pentadecenoic acid Chemical compound CCCCCCCCCCCC\C=C\C(O)=O HOGWBMWOBRRKCD-BUHFOSPRSA-N 0.000 description 1
- IBYFOBGPNPINBU-OUKQBFOZSA-N trans-2-tetradecenoic acid Chemical compound CCCCCCCCCCC\C=C\C(O)=O IBYFOBGPNPINBU-OUKQBFOZSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- LKOVPWSSZFDYPG-WUKNDPDISA-N trans-octadec-2-enoic acid Chemical compound CCCCCCCCCCCCCCC\C=C\C(O)=O LKOVPWSSZFDYPG-WUKNDPDISA-N 0.000 description 1
- YIYBQIKDCADOSF-ONEGZZNKSA-N trans-pent-2-enoic acid Chemical compound CC\C=C\C(O)=O YIYBQIKDCADOSF-ONEGZZNKSA-N 0.000 description 1
- WMZHDICSCDKPFS-UHFFFAOYSA-N triacontene Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCC=C WMZHDICSCDKPFS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229940098697 zinc laurate Drugs 0.000 description 1
- 229940105125 zinc myristate Drugs 0.000 description 1
- 229940012185 zinc palmitate Drugs 0.000 description 1
- LPEBYPDZMWMCLZ-CVBJKYQLSA-L zinc;(z)-octadec-9-enoate Chemical compound [Zn+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O LPEBYPDZMWMCLZ-CVBJKYQLSA-L 0.000 description 1
- GPYYEEJOMCKTPR-UHFFFAOYSA-L zinc;dodecanoate Chemical compound [Zn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O GPYYEEJOMCKTPR-UHFFFAOYSA-L 0.000 description 1
- GJAPSKMAVXDBIU-UHFFFAOYSA-L zinc;hexadecanoate Chemical compound [Zn+2].CCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCC([O-])=O GJAPSKMAVXDBIU-UHFFFAOYSA-L 0.000 description 1
- XKMZOFXGLBYJLS-UHFFFAOYSA-L zinc;prop-2-enoate Chemical compound [Zn+2].[O-]C(=O)C=C.[O-]C(=O)C=C XKMZOFXGLBYJLS-UHFFFAOYSA-L 0.000 description 1
- GBFLQPIIIRJQLU-UHFFFAOYSA-L zinc;tetradecanoate Chemical compound [Zn+2].CCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCC([O-])=O GBFLQPIIIRJQLU-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
-
- 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
- A63B37/0039—Intermediate layers, e.g. inner cover, outer core, mantle characterised by the material
-
- 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
- A63B37/0045—Thickness
-
- 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
- A63B37/0075—Three piece balls, i.e. cover, intermediate layer and core
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
について説明する。
アイオノマー樹脂の中和度(モル%)=100×アイオノマー樹脂中の中和されているカルボキシル基のモル数/アイオノマー樹脂中のカルボキシル基の総モル数
mM1O・M2(RCOO)2 ・・・(1)
(1)式中、mは、上記式(1)に示される塩基性脂肪酸金属塩中の金属酸化物または金属水酸化物のモル数を示すものである。mは、0.1〜2.0であることが好ましく、0.2〜1.5であることがより好ましい。mが0.1未満であれば、得られる樹脂組成物の反発性が低下する場合があり、mが2.0を超えると、塩基性脂肪酸金属塩の融点が高くなり過ぎて、樹脂成分への分散性が困難になる場合がある。M1およびM2は、それぞれ周期表第2族または第12族に属する金属が好ましい。M1およびM2は、同一または異なっていてもよい。第2族に属する金属としては、ベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウムを挙げることができる。第12族に属する金属としては、亜鉛、カドミウム、水銀を挙げることができる。M1およびM2の金属としては、例えば、マグネシウム、カルシウム、バリウム、亜鉛が好ましく、マグネシウムがより好ましい。
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、コアの表面部において測定したショアD硬度をコア表面硬度とし、コアを半球状に切断し、切断面の中心において測定したショアD硬度をコア中心硬度とした。
カバー用組成物または中間層用組成物を用いて、射出成形により、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、測定基板など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。
コアまたはゴルフボールに初期荷重98Nを負荷した状態から終荷重1275Nを負荷したときまでの圧縮方向の変形量(圧縮方向にコアまたはゴルフボールが縮む量)を測定した。
ゴルフボール用樹脂組成物を用いて、熱プレス成形にて厚み約2mmのシートを作製し、当該シートから直径28mmの円形状に打抜いたものを6枚重ねることにより、厚さ約12mm、直径28mmの円柱状試験片を作製した。この試験片についてリュプケ式反発弾性試験(試験温湿度23℃、50RH%)を行った。なお、試験片の作製および試験方法は、JIS K6255に準じて行った。
ツルーテンパー社製のスイングロボットM/Cに、メタルヘッド製W#1ドライバー(SRIスポーツ社製、商品名「XXIO」,シャフト硬度:S、ロフト角:11°)を取り付け、ヘッドスピードを45m/秒に設定した。各ゴルフボールを、恒温器にて23℃で12時間保管した。各ゴルフボールを恒温器から取り出した後、すみやかに打撃して、ゴルフボールが壊れるまでの繰返し打撃回数を測定した。測定は、各ゴルフボールについて12個ずつ行った。各ゴルフボールの耐久性は、ゴルフボールNo.7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。
各ゴルフボールに198.4gの金属製円筒物を40m/秒の速度で衝突させ、衝突前後の円筒物およびゴルフボールの速度を測定し、それぞれの速度および重量から各ゴルフボールの反発係数を算出した。測定は各ゴルフボールについて12個ずつ行って、その平均値を各ゴルフボールの反発係数とした。なお、反発係数は、ゴルフボールNo.7の反発係数を100として、指数化した値で示した。
(1)コアの作製
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170℃、15分間加熱プレスすることにより球状のコアを得た。なお、硫酸バリウムは、得られるゴルフボールの質量が、45.4gとなるように適量加えた。
アクリル酸亜鉛:日本蒸溜工業社製、「ZNDA−90S」
酸化亜鉛:東邦亜鉛社製、「銀嶺(登録商標)R」
硫酸バリウム:堺化学社製、「硫酸バリウムBD」
ジクミルパーオキサイド:日油社製、「パークミル(登録商標)D」
ジフェニルジスルフィド:住友精化社製
表2〜表3に示した配合材料を用いて、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およびカバー用組成物をそれぞれ調製した。中間層用組成物の押出は、スクリュー径45mm、スクリュー回転数200rpm、スクリューL/D=35、シリンダー温度160〜230℃で行った。カバー用組成物の押出条件は、スクリュー径45mm、スクリュー回転数200rpm、スクリューL/D=35であり、配合物は、押出機のダイの位置で160〜230℃に加熱された。
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
酸化チタン:石原産業社製A220
前述のようにして得たコア上に前記で得た中間層用組成物を射出成形することにより、コアを被覆する中間層を形成した。続いて、前記中間層上にカバー用組成物を射出成形することによりカバーを形成して、ゴルフボールを作製した。中間層およびカバーを成形するための成形用上下金型は、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。
ニュクレルAN4319:三井・デュポンポリケミカル社製、エチレン・メタクリル酸・アクリル酸ブチル共重合体(メルトフローレイト(190℃×2.16kg):55g/10min、曲げ剛性率21:MPa
塩基性ステアリン酸マグネシウム:日東化成工業社製(金属含有量1.5モル%、(1)式において、M1=M2=Mg,R=炭素数17)
塩基性ベヘニン酸マグネシウム:日東化成工業社製(金属含有量1.6モル%、(1)式において、M1=M2=Mg,R=炭素数21)
塩基性ラウリン酸マグネシウム:日東化成工業社製(金属含有量1.5モル%、(1)式において、M1=M2=Mg,R=炭素数11)
塩基性オレイン酸マグネシウム:日東化成工業社製(金属含有量1.7モル%、(1)式において、M1=M2=Mg,R=炭素数17)
ベヘニン酸マグネシウム:日東化成工業社製
ベヘニン酸:日油社製
水酸化マグネシウム:和光純薬工業社製
酸化チタン:石原産業社製A220
Claims (8)
- (A)(a−1)オレフィンと、炭素数3〜8個のα,β−不飽和カルボン酸との二元共重合体、(a−2)オレフィンと、炭素数3〜8個のα,β−不飽和カルボン酸との二元共重合体の金属イオン中和物からなるアイオノマー樹脂、(a−3)オレフィンと炭素数3〜8個のα,β−不飽和カルボン酸とα,β−不飽和カルボン酸エステルとの三元共重合体、および、(a−4)オレフィンと炭素数3〜8個のα,β−不飽和カルボン酸とα,β−不飽和カルボン酸エステルとの三元共重合体の金属イオン中和物からなるアイオノマー樹脂より成る群から選択される少なくとも一種の樹脂成分と、
下記一般式(1)で表される(B)塩基性脂肪酸金属塩とを含有し、
(A)前記樹脂成分100質量部に対して、(B)前記塩基性脂肪酸金属塩を25質量部〜100質量部含有することを特徴とするゴルフボール用樹脂組成物。
mM 1 O・M 2 (RCOO) 2 ・・・(1)
[(1)式中、mは、0.1〜2.0である。M 1 およびM 2 は、同一または異なって、周期表第2族または第12族に属する金属である。RCOOは、飽和脂肪酸または不飽和脂肪酸の残基を示す。] - (B)前記塩基性脂肪酸金属塩は、炭素数が8〜30の塩基性脂肪酸金属塩である請求項1に記載のゴルフボール用樹脂組成物。
- (B)前記塩基性脂肪酸金属塩の脂肪酸成分は、ラウリン酸、ステアリン酸、ベヘニン酸、オレイン酸、および、エルカ酸よりなる群から選択される少なくとも一種である請求項1または2に記載のゴルフボール用樹脂組成物。
- 前記ゴルフボール用樹脂組成物のスラブ硬度は、ショアD硬度で20〜80である請求項1〜3のいずれか一項に記載のゴルフボール用樹脂組成物。
- 前記ゴルフボール用樹脂組成物の反発弾性が、40%以上である請求項1〜4のいずれか一項に記載のゴルフボール用樹脂組成物。
- コアと、前記コアを被覆するように配設された一以上の中間層と、前記中間層を被覆するように配設されたカバーとを有するゴルフボールであって、
前記中間層の少なくとも一つが、請求項1〜5のいずれか一項に記載のゴルフボール用樹脂組成物から形成されていることを特徴とするゴルフボール。 - 前記中間層の厚みは、0.5mm〜15mmである請求項6に記載のゴルフボール。
- 前記コアが、ゴム組成物から形成されている請求項6または7に記載のゴルフボール。
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US13/728,503 US9221927B2 (en) | 2011-12-28 | 2012-12-27 | Golf ball resin composition and golf ball |
CN201210585435.8A CN103183869B (zh) | 2011-12-28 | 2012-12-28 | 高尔夫球用树脂组合物及高尔夫球 |
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US10092795B2 (en) * | 2014-10-24 | 2018-10-09 | Acushnet Company | Golf ball layers including very neutralized polymers and methods for making same |
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JP5875369B2 (ja) * | 2011-12-28 | 2016-03-02 | ダンロップスポーツ株式会社 | マルチピースゴルフボール |
JP5916380B2 (ja) * | 2011-12-28 | 2016-05-11 | ダンロップスポーツ株式会社 | ゴルフボール用樹脂組成物およびゴルフボール |
JP5916381B2 (ja) * | 2011-12-28 | 2016-05-11 | ダンロップスポーツ株式会社 | ゴルフボール用樹脂組成物およびゴルフボール |
-
2011
- 2011-12-28 JP JP2011289986A patent/JP5916382B2/ja active Active
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2012
- 2012-12-27 US US13/728,503 patent/US9221927B2/en not_active Expired - Fee Related
- 2012-12-28 CN CN201210585435.8A patent/CN103183869B/zh active Active
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US20130172115A1 (en) | 2013-07-04 |
CN103183869A (zh) | 2013-07-03 |
CN103183869B (zh) | 2018-01-23 |
US9221927B2 (en) | 2015-12-29 |
JP2013138724A (ja) | 2013-07-18 |
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