JP6456517B2 - 官能基が導入されたアミノシラン系末端変性剤を利用するゴム組成物の製造方法、及びこれによって製造したゴム組成物 - Google Patents
官能基が導入されたアミノシラン系末端変性剤を利用するゴム組成物の製造方法、及びこれによって製造したゴム組成物 Download PDFInfo
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- JP6456517B2 JP6456517B2 JP2017548007A JP2017548007A JP6456517B2 JP 6456517 B2 JP6456517 B2 JP 6456517B2 JP 2017548007 A JP2017548007 A JP 2017548007A JP 2017548007 A JP2017548007 A JP 2017548007A JP 6456517 B2 JP6456517 B2 JP 6456517B2
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Classifications
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- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/25—Incorporating silicon atoms into the molecule
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
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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
- C08C19/22—Incorporating nitrogen atoms into the molecule
-
- 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
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- 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
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/10—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl-aromatic monomers
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- 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
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Description
20Lオートクレーブ反応器に、スチレン270g、1,3-ブタジエン710g及びノルマルヘキサン5kg、極性添加剤としてDTP(2,2-ジ(2-テトラヒドロフリル)プロパン)1.13gを入れた後、反応器の内部温度を40℃に昇温させた。反応器の内部温度が40℃に到達したとき、n-ブチルリチウム27.40g(2.62重量% in hexane、33% activation)を反応器に投入して断熱昇温反応を進めさせた。20分余り経過した後、1,3-ブタジエン20.0gを投入してSSBR末端をブタジエンでキャッピング(capping)した。5分後、変性剤のジメチル 2-((ビス(3-(ジエトキシ(メチル)シリル)プロピル)アミノ)メチル)スクシネート1.65gを投入してから15分間反応させた([DTP]/[act. Li] = 1.55、[変性剤]/[act. Li] = 0.82)。以後、エタノールを利用して重合反応を停止させ、酸化防止剤であるWingstay Kがヘキサンに30重量%溶解されている溶液33gを添加した。その結果得られた重合物をスチームで加熱された温水に入れ、撹拌して溶媒を除去した後、ロール乾燥して残量の溶媒と水を除去し、末端変性共役ジエン系重合体を製造した。以後、サンプルを乾燥してGPCを測定した。
20Lオートクレーブ反応器に、スチレン270g、1,3-ブタジエン710g及びノルマルヘキサン5kg、極性添加剤としてDTP(2,2-ジ(2-テトラヒドロフリル)プロパン)0.92gを入れた後、反応器の内部温度を40℃に昇温させた。反応器の内部温度が40℃に到達したとき、n-ブチルリチウム22.40g(2.62重量% in hexane、35% activation)を反応器に投入して断熱昇温反応を進めさせた。20分余り経過した後、1,3-ブタジエン20.0gを投入してSSBR末端をブタジエンでキャッピング(capping)した。5分後、変性剤のジエチル 3,3'-((3-(トリエトキシシリル)プロピル)アザネジル)ジプロピオネート1.47gを投入してから15分間反応させた([DTP]/[act. Li] = 1.56、[変性剤]/[act. Li] = 0.92)。以後、エタノールを利用して重合反応を停止させ、酸化防止剤であるWingstay Kがヘキサンに30重量%溶解されている溶液33.3gを添加した。その結果得られた重合物をスチームで加熱された温水に入れ、撹拌して溶媒を除去した後、ロール乾燥して残量の溶媒と水を除去し、末端変性共役ジエン系重合体を製造した。以後、サンプルを乾燥してGPCを測定した。
カップリング剤であるジメチルクロロシランを1.2mmol投入したことを除き、前記実施例1と同様に実施して変性共役ジエン系重合体を製造した。このように製造された変性共役ジエン系重合体に対する分析の結果を下記表1に示した。
本発明者が発明したエチル 3-(シクロヘキシル((トリエトキシシリル)メチル)アミノ)プロパノエート1.1mmolを投入したことを除き、前記実施例1と同様に実施して変性共役ジエン系重合体を製造した。このように製造された変性共役ジエン系重合体に対する分析の結果を下記表1に示した。
B:ジエチル 3,3'-((3-(トリエトキシシリル)プロピル)アザネジル)ジプロピオネート
C:ジメチルクロロシラン
D:エチル 3-(シクロヘキシル((トリエトキシシリル)メチル)アミノ)プロパノエート
前記表1に示した試料のうちA、B、C及びDのそれぞれを原料ゴムにして、下記表2に示した配合条件で配合して共役ジエン系重合体ゴム組成物を製造した。表2中の原料の単位はゴム100重量部基準のphrである。
1)引張実験
ASTM 412の引張試験法によって試験片の切断時の引張強度及び300%伸張時の引張応力(300%モジュラス)を測定した。このためにInstron社のUniversal Test Machine 4204引張試験機を利用し、室温で50cm/minの引張速度で測定して引張強度、モジュラス、伸び率などの測定値を得た。
2)粘弾性特性
TA社の動的機械分析機を用いた。歪みモードで周波数10Hz、各測定温度(-60〜60℃)で変形を変化させてTan δを測定した。ペイン効果は、変形0.28%から40%での最小値と最大値の差異で表した。ペイン効果が小さいほど、シリカなどの充填剤の分散性が良好である。低温0℃のTan δが高いものであるほど濡れた路面への抵抗性に優れ、高温60℃のTan δが低いほどヒステリシス損失が少なく、タイヤの低転がり抵抗性、即ち低燃費性に優れる。表3に加硫ゴムの物性を示した。
Claims (12)
- 共役ジエン系重合体の末端に下記化学式(1)または化学式(2)で表されるアミノシラン系末端変性剤が結合されていることを特徴とする、末端変性共役ジエン系重合体を含む末端変性共役ジエン系重合体ゴム組成物。
R1及びR2は、炭素数1〜20の炭化水素、またはヘテロ元素を含む炭素数1〜20の炭化水素であり、
R3は炭素数1〜10の炭化水素であり、
R4及びR5は炭素数1〜20の炭化水素であり、
R6は、mが1の場合に炭素数1〜10の炭化水素であり、
mが2の場合、R 6 は水素原子であり、
nは1〜3の整数であり、mは1〜2の整数であり;
R1及びR2は、炭素数1〜20の炭化水素、またはヘテロ元素を含む炭素数1〜20の炭化水素であり、
R3は炭素数1〜10の炭化水素であり、
R4及びR5は炭素数1〜20の炭化水素であり、
nは1〜3の整数である。 - 前記末端変性共役ジエン系重合体ゴム組成物は、末端変性共役ジエン系重合体100重量部、及び無機充填剤0.1から200重量部を含む請求項1に記載の末端変性共役ジエン系重合体ゴム組成物。
- 前記無機充填剤は、シリカ系充填剤、カーボンブラック及びこれらの混合物からなる群より選択される1種以上であることを特徴とする請求項2に記載の末端変性共役ジエン系重合体ゴム組成物。
- a)有機金属化合物の存在下に溶媒の中で共役ジエン系単量体、または共役ジエン系単量体と芳香族ビニル系単量体を重合させてアルカリ金属末端を有する活性重合体を形成する工程;
b)前記アルカリ金属末端を有する活性重合体に下記化学式(1)または化学式(2)で表される化合物を投入し変性させて、末端変性共役ジエン系重合体を形成する工程;及び
c)前記末端変性共役ジエン系重合体を含む末端変性共役ジエン系重合体ゴム組成物を製造する工程を含む末端変性共役ジエン系重合体ゴム組成物の製造方法。
R1及びR2は、炭素数1〜20の炭化水素、またはヘテロ元素を含む炭素数1〜20の炭化水素であり、
R3は炭素数1〜10の炭化水素であり、
R4及びR5は炭素数1〜20の炭化水素であり、
R6は、mが1の場合に炭素数1〜10の炭化水素であり、
mが2の場合、R 6 は水素原子であり、
nは1〜3の整数であり、
mは1〜2の整数であり;
R1及びR2は、炭素数1〜20の炭化水素、またはヘテロ元素を含む炭素数1〜20の炭化水素であり、
R3は炭素数1〜10の炭化水素であり、
R4及びR5は炭素数1〜20の炭化水素であり、
nは1〜3の整数である。 - 前記化学式(1)のR1及びR2は、炭素数1〜10のアルキル基、またはN、SもしくはOを含む炭素数1〜10のアルキル基であり;R3は炭素数1〜10のアルキレン基であり;R4及びR5は炭素数1〜20のアルキル基であり;
前記化学式(2)のR1及びR2は、炭素数1〜10のアルキル基、またはN、SもしくはOを含む炭素数1〜10のアルキル基であり;R3は炭素数1〜10のアルキレン基であり;R4及びR5は炭素数1〜20のアルキル基であり;R6は、mが1の場合に炭素数1〜10のアルキル基であることを特徴とする請求項4に記載の末端変性共役ジエン系重合体ゴム組成物の製造方法。 - 前記有機金属化合物と、前記化学式(1)または化学式(2)で表される化合物とのモル比は、1:0.1から1:10である請求項4〜7のいずれか一項に記載の末端変性共役ジエン系重合体ゴム組成物の製造方法。
- 前記a)工程で、極性添加剤がさらに投入される請求項4〜8のいずれか一項に記載の末端変性共役ジエン系重合体ゴム組成物の製造方法。
- 前記極性添加剤は、前記有機金属化合物の全体1mmolを基準に0.001から10gで投入される請求項9に記載の末端変性共役ジエン系重合体ゴム組成物の製造方法。
- 前記末端変性共役ジエン系重合体は、1,000から2,000,000g/molの数平均分子量(Mn)を有する請求項4〜10のいずれか一項に記載の末端変性共役ジエン系重合体ゴム組成物の製造方法。
- 請求項1に記載の末端変性共役ジエン系重合体ゴム組成物を含むタイヤまたはタイヤトレッド。
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KR20150032210A (ko) * | 2013-09-17 | 2015-03-25 | 주식회사 엘지화학 | 개질 공액 디엔계 중합체, 그 제조방법 및 고무조성물 |
CN105473624B (zh) * | 2013-11-15 | 2017-10-13 | Lg化学株式会社 | 改性共轭二烯聚合物及其制备方法,和含有该改性共轭二烯聚合物的橡胶组合物 |
KR101726949B1 (ko) | 2014-12-22 | 2017-04-13 | 주식회사 엘지화학 | 관능기가 도입된 아미노실란계 말단변성제, 이를 이용하는 말단변성 공역디엔계 중합체의 제조방법, 및 이에 따라 제조한 말단변성 공역디엔계 중합체 |
KR101868213B1 (ko) * | 2015-12-18 | 2018-06-15 | 주식회사 엘지화학 | 변성 중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 |
US9948869B2 (en) * | 2016-07-04 | 2018-04-17 | Yuan-Ting Fang | Image fusion method for multiple lenses and device thereof |
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CN107567474B (zh) | 2020-06-09 |
EP3312203A1 (en) | 2018-04-25 |
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EP3312203A4 (en) | 2018-07-11 |
WO2016204575A1 (ko) | 2016-12-22 |
CN107567474A (zh) | 2018-01-09 |
JP2018510939A (ja) | 2018-04-19 |
US20180066077A1 (en) | 2018-03-08 |
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EP3312203B1 (en) | 2019-08-28 |
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