JP2013136747A - 官能化エラストマー、ゴム組成物及び空気入りタイヤ - Google Patents
官能化エラストマー、ゴム組成物及び空気入りタイヤ Download PDFInfo
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- JP2013136747A JP2013136747A JP2012277191A JP2012277191A JP2013136747A JP 2013136747 A JP2013136747 A JP 2013136747A JP 2012277191 A JP2012277191 A JP 2012277191A JP 2012277191 A JP2012277191 A JP 2012277191A JP 2013136747 A JP2013136747 A JP 2013136747A
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- rubber
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- 150000004659 dithiocarbamates Chemical class 0.000 description 1
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- 125000000904 isoindolyl group Chemical group C=1(NC=C2C=CC=CC12)* 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011140 metalized polyester Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- SIOXPEMLGUPBBT-UHFFFAOYSA-M picolinate Chemical compound [O-]C(=O)C1=CC=CC=N1 SIOXPEMLGUPBBT-UHFFFAOYSA-M 0.000 description 1
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- 239000004584 polyacrylic acid Substances 0.000 description 1
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- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
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- 238000001556 precipitation Methods 0.000 description 1
- 125000001042 pteridinyl group Chemical group N1=C(N=CC2=NC=CN=C12)* 0.000 description 1
- 125000003226 pyrazolyl group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- JPPLPDOXWBVPCW-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) octanethioate Chemical compound CCCCCCCC(=O)SCCC[Si](OCC)(OCC)OCC JPPLPDOXWBVPCW-UHFFFAOYSA-N 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
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- 229960002317 succinimide Drugs 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical group [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 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
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
- C08C19/42—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups
- C08C19/44—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/006—Rubber characterised by functional groups, e.g. telechelic diene polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
- Pyridine Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
【解決手段】少なくとも一つの共役ジエンモノマーから誘導されたポリマー主鎖;及び主鎖に結合した金属イオンと錯化できる多座配位子を含む官能基(前記官能基は)を含む官能化エラストマー1、及び該官能化エラストマー1と金属イオン4を含むゴム組成物とこれを用いた空気入りタイヤ。
【選択図】図1
Description
一態様において、官能化エラストマーは、構造I:
一態様において、金属イオンと錯化できる多座配位子を含む官能基Zは、置換又は非置換ビピリジニル基、置換又は非置換ターピリジニル基、置換又は非置換フェナントロリニル基、及び置換又は非置換ピラジニル基などであるが、これらに限定されない。
一態様において、多座配位子を含む官能基Zは、置換又は非置換2,2’−ビピリジニル基である。
Xに結合された−[−Y−Z]基の数nは、所定のコポリマー分子において約2〜約30の範囲である。
方法の第二のステップは、金属イオンと錯化できる多座配位子を含む官能基Z及び第一のポリマーの炭素炭素二重結合と反応できる官能基Yを含む官能化剤を得ることである。
例えば、ランフラットタイヤの空気抜け事象中にカプセル化金属イオンの放出温度に達すると、金属イオンはマイクロカプセルから放出され、官能化エラストマーを含む周囲のゴム組成物に暴露される。
本明細書中で使用され、従来の慣例に従う用語“phr”は、“100重量部のゴム、又はエラストマーあたりの各材料の重量部”を意味する。
ゴムコンパウンドに使用できる一般的に用いられるケイ質顔料は、従来型の焼成(pyrogenic)及び沈降ケイ質顔料(シリカ)を含む。一態様においては沈降シリカが使用される。本発明で使用される従来型ケイ質顔料は、例えば、ケイ酸ナトリウムなどの可溶性ケイ酸塩の酸性化によって得られるような沈降シリカである。
従来型シリカは、電子顕微鏡による測定で例えば0.01〜0.05ミクロンの範囲の平均極限粒径を有すると予想できるが、シリカ粒子は、さらに小さい、又はおそらくは大きいサイズであってもよい。
Q−Alk−Sq−Alk−Q V
の化合物で、式中、Qは、
本実施例では、チオール−エン反応を実証するために、2−メルカプトナフタレンによるスチレン−ブタジエンゴムの官能化を示す。
このコンパウンドを、1回は反応開始剤としてAIBNを用い、1回はアシルホスフィンオキシド光開始剤(ルシリンTPO)を用いて2回合成した。
図6に、2−メルカプトナフタレンとの反応前(1)及び反応後(2)のエラストマーのUV可視スペクトル及び純チオールのスペクトル(3)を示す。この場合、光開始剤が使用された。図7に、AIBNで開始された反応に関する同じスペクトルを示す。すなわち、2−メルカプトナフタリンとの反応前(1)及び反応後(2)のエラストマーのUV可視スペクトル及び純チオールのスペクトル(3)である。
本実施例では、スチレン−ブタジエンゴムの6−(2,2’;6’,2”−ターピリジン−4’−イルスルファニル)ヘキサン−1−チオール(式VI)による官能化を示す。
式VIのターピリジンは、文献手順[U.S.Schubert,C.Eschbaumer,O.Hien,P.R.Andres,Tetrahedron Lett.2001,42,4705;U.S.Schubert,S.Schmatloch,A.A.Precup,Designed Monomers and Polymers 2002,5,211]を用いて4段階で得た。各段階の収率及び分析結果は次の通りであった。
エチルピコリネートを、テトラヒドロフラン中、NaHの存在下で、アセトンと反応させた。反応混合物は8時間還流した。
収率:41% 黄色結晶
1H−NMR(CDCl3/300MHz):δ[ppm]: 2.10 (s, 4H); 7.24 (s, CDCl3); 7.40-7.44 (m, 2H); 7.84-7.95 (m, 4H); 8.76-8.77 (m, 2H)
段階2:2,6−ビス−(2’−ピリジル)−4−ピリドン
段階1の生成物を48時間還流しながら酢酸アンモニウムと反応させた。
収率:67% 薄桃色結晶
1H−NMR(CDCl3/300MHz):δ[ppm]: 6.77 (s, 2H); 7.24 (s, CDCl3); 7.36-7.38 (m, 2H); 7.77-7.86 (m, 4H); 8.64-8.66 (m, 2H)
段階3:4’−クロロ−2,2’;6’,2”−ターピリジン
段階2の生成物を24時間還流しながら塩化ホスホリル中で五塩化カリウムと反応させた。
収率:55% 薄紫色
1H−NMR(CDCl3/300MHz):δ[ppm]: 7.24 (s, CDCl3); 7.80-7.86 (m, 2H); 8.46 (s, 2H); 8.55 (t, 2H); 8.58 (t, 2H); 8.66-8.69 (m, 2H)
段階4:6−(2,2’;6’,2”−ターピリジン−4’−イルスルファニル)ヘキサン−1−チオール
段階3の生成物を、ジメチルスルホキシド中、水酸化カリウムの存在下で、1,6−ヘキサンジチオールと反応させた。
収率:35% 無色結晶
1H−NMR(CDCl3/300MHz):δ[ppm]:1.32-1.63 (m, 4H), 1.79-1.88 (m, 4H), 3.63 (q, 2H), 4.7 (t, 2H), 7.24 (s, CDCl3); 7.27-7.32 (m, 2H); 7.78-7.84 (m, 2H); 7.96 (s, 2H); 8.56-8.65 (m, 4H)
実施例1のスチレンブタジエンゴムを、実施例1の手順に従って、2−メルカプトナフタレンの代わりに6−(2,2’;6’,2”−ターピリジン−4’−イルスルファニル)ヘキサン−1−チオールで官能化した。
本実施例では、スチレン−ブタジエンゴムの4’−メルカプト−2,2’:6’,2”−ターピリジン(式VII)による官能化を示す。
式VIIのターピリジンは、実施例2に示された4段階の手順を用い、段階4を以下のように変更して得た。段階3の4’−クロロ−2,2’;6’,2”−ターピリジン生成物を、ジメチルホルムアミド(DMF)中、水酸化カリウムの存在下で、硫化水素ナトリウム(NaSH)と反応させた。
収率:88%
実施例1のスチレンブタジエンゴムを、実施例1の手順に従って、2−メルカプトナフタレンの代わりに4’−メルカプト−2,2’:6,2”−ターピリジンで官能化した。
本実施例では、スチレン−ブタジエンゴムの4’−(4−メルカプトメチルフェニル)−2,2’:6,2”−ターピリジン(式VIII)による官能化を示す。
式VIIIのターピリジンは、図13に示されている合成経路に従って得た。
段階1:4’−メチルフェニル−2,2’:6,2”−ターピリジン
[X.J.Zhang,D.Li,X.P.Zhou,New J.Chem.2006,30,706]
4.6g(0.115mol)のNaOHを、6.4g(0.05mol)のp−トリルアルデヒド及び12.8g(0.10mol)の2−アセチルピリジンと、黄色粉末が得られるまで乳鉢で混合した。該粉末を、35gの酢酸アンモニア(過剰)及び90mlの酢酸(100%)が入っているフラスコに移した。混合物を還流下で3時間加熱した。その後、50mlのエタノールと68mlの水を加えた。赤色溶液を冷却すると生成物が結晶化した。これをエタノールから2回再結晶化した。
収率:65% 淡黄色結晶
1H−NMR(CDCl3/300MHz): δ[ppm]: 2.41 (s, 3H); 7.29-7.37 (m, 4H); 7.81 (d, 2H); 7,87 (td, 2H); 8.66 (d, 2H); 8.71-8,73 (m, 4H)
段階2:4’−(4−ブロモメチルフェニル)−2,2’:6,2”−ターピリジン
7.07gの4’−メチルフェニル−2,2’:6,2”−ターピリジン、0.28gのAIBN及び4.67gのN−ブロモコハク酸イミドを70mlのベンゼンに溶解し、還流下で6時間加熱した。得られた懸濁液を熱ろ過し、コハク酸イミドを除去した。ろ液の溶媒を蒸発させ、得られた固体を2:1のエタノール/アセトンから再結晶化した。
収率:60% 暗黄色結晶
1H−NMR(CDCl3/300MHz):δ [ppm]: 4.55 (s, 2H); 7.33-7.38 (m, 2H); 7.52 (d, 2H); 7,85-7.92 (m, 4H); 8.66 (td, 2H); 8.71-8,73 (m, 4H)
段階3:4’−(4−イソチオウロニウムブロミドメチルフェニル)−2,2’:6,2”−ターピリジン
この段階は文献手順[G.C.Zhou,Harruna,II,Macromolecules 2005,38,4114]に従って実施した。
収率:75%
段階4:4’−(4−メルカプトメチルフェニル)−2,2’:6,2”−ターピリジン
この段階は文献手順[G.C.Zhou,Harruna,II,Macromolecules 2005,38,4114]に従って実施した。
収率:95%
1H−NMR(CDCl3/300MHz):δ[ppm]: 3.69 (s, 2H); 7.28-7.38 (m, 4H); 7.81-7.88 (m, 4H); 8.61-8.70 (m, 6H)
実施例1のスチレンブタジエンゴムを、実施例1の手順に従って、2−メルカプトナフタレンの代わりに4’−(4−メルカプトメチルフェニル)−2,2’:6,2”−ターピリジンで官能化した。
本実施例では、官能化エラストマーへの鉄塩の添加効果を示す。実施例4の官能化エラストマー0.4gを小バイアル中の4mlのTHFに添加することによってゴムセメントを製造した。このゴムセメントに0.02gのFeSO4・7H2Oを合わせ、バイアルを7時間振盪した。ゴムセメント/金属塩混合物を目視検査したところ、無色のゴムセメントと比べ、紫色を呈していた。
本実施例では、官能化エラストマーへのルテニウム塩の添加効果を示す。実施例4の官能化エラストマー0.03gを小バイアル中の5mlのTHF及び0.25mlのMeOHに添加することによってゴムセメントを製造した。このゴムセメントに0.02gのRuCl3を合わせ、バイアルを65℃に20時間加熱し、振盪した。ゴムセメント/金属塩混合物を目視検査したところ、無色のゴムセメントと比べ、暗赤色を呈していた。
2 硫黄連結
3 ターピリジン基
4 金属イオン
5 配位錯体
6 錯体
7 表面
101 ランフラットタイヤ
102 トレッド
103 ビード部
104 サイドウォール部
105 ワイヤビードコア
106 チェーファー
107 トウガード
108 インナーライナー
109 ベルト構造
110 カーカスプライ
111 カーカスプライ折り返し
112 サイドウォールインサート
113 アペックス
118 カプセル化金属イオン
120 金属イオン
122 マイクロカプセル
Claims (15)
- 少なくとも一つの共役ジエンモノマー及び所望により少なくとも一つのビニル芳香族モノマーを含むモノマーから誘導されたポリマー主鎖;及び主鎖に結合した官能基(前記官能基は金属イオンと錯化できる多座配位子を含んでいる)を含む官能化エラストマー。
- 式I:
Zは、金属イオンと錯化できる多座配位子を含み;
YはXとZの両方に結合した二価の基であり;そして
nはXに結合された−[−Y−Z]基の数である]の官能化ジエン系エラストマー。 - Zが、置換ビピリジニル基、非置換ビピリジニル基、置換ターピリジニル基、非置換ターピリジニル基、置換フェナントロリニル基、非置換フェナントロリニル基、置換ピラジニル基、及び非置換ピラジニル基からなる群から選ばれるリガンドを含む、請求項2に記載の官能化ジエン系エラストマー。
- Zが、式II、III又はIV:
- Yが二価硫黄である、請求項2に記載の官能化ジエン系エラストマー。
- −[−Y−Z]基が、6−(2,2’;6’,2”−ターピリジン−4’−イルスルファニル)ヘキシル−1−スルファニル、2,2’;6’,2”−ターピリジン−4’−イルスルファニル、及び4−(2,2’;6’,2”−ターピリジン−4’−イル)フェニルメチルスルファニルからなる群から選ばれる、請求項2に記載の官能化ジエン系エラストマー。
- Xが、スチレン−ブタジエンゴム、ポリブタジエンゴム、及びポリイソプレンゴムからなる群から選ばれる、請求項2に記載の官能化ジエン系エラストマー。
- nが2〜30の範囲である、請求項2に記載の官能化ジエン系エラストマー。
- 前記請求項のいずれかに記載の官能化エラストマー、及び金属イオンを含むゴム組成物。
- 金属イオンが金属塩を含む、請求項9に記載のゴム組成物。
- 金属イオンが、Cu2+、Fe2+、Co2+、Ni2+、Zn2+及びRu2+からなる群から選ばれる、請求項9又は10に記載のゴム組成物。
- 金属イオンが、FeSO4・7H2O、FeCl2、NiCl2、RuCl3、ステアリン酸コバルト、及びステアリン酸亜鉛からなる群から選ばれる金属塩を含む、請求項9〜11のいずれかに記載のゴム組成物。
- 金属イオンがカプセル化金属イオンである、請求項9〜12のいずれかに記載のゴム組成物。
- 金属イオンが、金属化カーボンブラック、金属化シリカ、スチールコードの表面上に配置された銅、金属化短繊維、及び金属ナノ粒子からなる群から選ばれる少なくとも一つのメンバーを含む、請求項9〜12に記載のゴム組成物。
- 請求項9〜14のいずれかに記載のゴム組成物を含む空気入りタイヤ。
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US13/333,033 | 2011-12-21 | ||
US13/332,989 | 2011-12-21 | ||
US13/332,934 | 2011-12-21 | ||
US13/333,033 US9050856B2 (en) | 2011-12-21 | 2011-12-21 | Rubber composition and runflat tire |
US13/332,989 US9163101B2 (en) | 2011-12-21 | 2011-12-21 | Rubber composition and pneumatic tire |
US13/332,934 US8859687B2 (en) | 2011-12-21 | 2011-12-21 | Functiontionalized elastomer |
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JP2013136747A true JP2013136747A (ja) | 2013-07-11 |
JP6207834B2 JP6207834B2 (ja) | 2017-10-04 |
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EP (1) | EP2607381B1 (ja) |
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CN (1) | CN103172916B (ja) |
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WO2016024606A1 (ja) * | 2014-08-12 | 2016-02-18 | 横浜ゴム株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
JP2016040347A (ja) * | 2014-08-12 | 2016-03-24 | 横浜ゴム株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
JP2016113494A (ja) * | 2014-12-11 | 2016-06-23 | 横浜ゴム株式会社 | タイヤ用ゴム組成物および空気入りタイヤ |
WO2022049961A1 (ja) * | 2020-09-04 | 2022-03-10 | 株式会社ブリヂストン | 錯化ポリマー、ゴム組成物、ゴム組成物の製造方法、及びゴム製品 |
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US8962730B2 (en) * | 2012-11-27 | 2015-02-24 | The Goodyear Tire & Rubber Company | Self-healing rubber composition and tire |
EP3042786B1 (en) * | 2014-12-19 | 2017-11-22 | The Goodyear Tire & Rubber Company | Functionalized elastomer |
FR3043591A1 (fr) * | 2015-11-13 | 2017-05-19 | Michelin & Cie | Composite a base de composant metallique et d'une matrice polymere fonctionnelle |
DE102016207744A1 (de) * | 2016-05-04 | 2017-11-09 | Continental Reifen Deutschland Gmbh | Kautschukmischung, Vulkanisat der Kautschukmischung und Fahrzeugreifen |
CN109485791B (zh) * | 2017-09-13 | 2021-10-19 | 中国石油化工股份有限公司 | 线形丁苯共聚物及其制备方法和组合物以及芳族乙烯基树脂及其制备方法 |
CN116635428A (zh) * | 2020-12-22 | 2023-08-22 | 倍耐力轮胎股份公司 | 包含可逆交联剂的弹性体胶体用组合物和车辆用轮胎 |
DE102021120597B3 (de) | 2021-08-09 | 2022-12-22 | Audi Aktiengesellschaft | Vorrichtung zur Reduzierung der Feinstaubbelastung durch Auffangen der beim Abrollen eines Reifens eines Kraftfahrzeugs entstehenden Reifenabriebpartikel |
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CN103172916A (zh) | 2013-06-26 |
EP2607381A1 (en) | 2013-06-26 |
JP6207834B2 (ja) | 2017-10-04 |
CN103172916B (zh) | 2015-05-27 |
EP2607381B1 (en) | 2018-01-24 |
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