JP2017503910A - アミン基を含む陰イオン末端を有する陰イオン重合開始剤、これを用いた変性共役ジエン系共重合体の製造方法、およびこれにより製造した変性共役ジエン系共重合体を含むゴム組成物 - Google Patents
アミン基を含む陰イオン末端を有する陰イオン重合開始剤、これを用いた変性共役ジエン系共重合体の製造方法、およびこれにより製造した変性共役ジエン系共重合体を含むゴム組成物 Download PDFInfo
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Abstract
Description
フラスコに、ヘキサン20gに3−(2−ピロリジノ−1−メチルエチル)−アルファ−メチルスチレンを8.5g、1.6Mブチルリチウム18gを反応器に入れた後、1時間撹拌して、変性開始剤として3−(2−ピロリジノ−1−メチルエチル)−アルファ−メチルスチレンリチウムを用意した。
変性剤としてビス(3−トリエトキシメチルシリルプロピル)−N−メチルアミンの代わりにN1,N1,N3,N3−テトラメチル−2−((トリメトキシシリル)メチル)プロパン−1,3−ジアミンを用いたことを除いては、実施例1と同様にして変性共役ジエン系重合体を製造した。
変性剤としてビス(3−トリエトキシメチルシリルプロピル)−N−メチルアミンの代わりにN,N−ビス(トリエトキシシリルプロピル)アミノプロピル−1−イミダゾール1gを用いたことを除いては、実施例1と同様にして変性共役ジエン系重合体を製造した。
開始剤としてブチルリチウムを用いたことを除いては、実施例1と同様にして変性共役ジエン系重合体を製造した。
b:ビス(3−トリエトキシメチルシリルプロピル)−N−メチルアミン
c:N1,N1,N3,N3−テトラメチル−2−(トリメトキシシリル)メチル)プロパン−1,3−ジアミン
d:N,N−ビス(トリエトキシシリルプロピル)アミノプロピル−1−イミダゾール
前記表1に示した試料のうち、A、BおよびCを原料ゴムとして、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。
ASTM412の引張試験法によって、試験片の切断時の引張強度および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 Machine4204引張試験機を用いており、室温で50cm/minの引張速度で測定して、引張強度、Modulus、伸び率などの測定値を得た。
TA社の動的機械分析機を用いた。ねじれモードで、周波数10Hz、各測定温度(−60〜60℃)で変形を変化させて、Tanδを測定した。ペイン効果は、変形0.28%〜40%での最小値と最大値との差で示した。ペイン効果が小さいほど、シリカ等充填剤の分散性が良い。低温0℃のTanδが高いほど、ウェット路面抵抗性に優れ、高温60℃のTanδ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、すなわち低燃費性に優れている。表3に加硫ゴムの物性を示した。
Claims (13)
- 下記化学式1〜化学式3のうちのいずれか1つで表される変性共役ジエン系重合体:
- a)下記化学式4で表される化合物の存在下、炭化水素溶媒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とを重合させて、アルカリ金属末端を有する活性重合体を形成するステップと、
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5、化学式6、または化学式7で表される化合物を投入して変性させるステップとを含む変性共役ジエン系重合体の製造方法:
- 前記化学式4で表される化合物は、前記単量体計100gを基準として、0.01〜10mmol使用されることを特徴とする請求項2に記載の変性共役ジエン系重合体の製造方法。
- 前記化学式4で表される化合物と、前記化学式5、化学式6、または化学式7で表される化合物とのモル比は、1:0.1〜1:10であることを特徴とする請求項2に記載の変性共役ジエン系重合体の製造方法。
- 前記a)ステップにおいて、極性添加剤がさらに投入されることを特徴とする請求項2に記載の変性共役ジエン系重合体の製造方法。
- 前記極性添加剤は、前記化学式4で表される化合物計1mmolを基準として、0.001〜10g投入されることを特徴とする請求項5に記載の変性共役ジエン系重合体の製造方法。
- 前記変性共役ジエン系重合体は、1,000〜2,000,000g/molの数平均分子量(Mn)を有することを特徴とする請求項2に記載の変性共役ジエン系重合体の製造方法。
- 前記変性共役ジエン系重合体は、共役ジエン系単量体と芳香族ビニル系単量体とを合わせた計100重量%を基準として、芳香族ビニル系単量体が0.0001〜50重量%含まれていることを特徴とする請求項2に記載の変性共役ジエン系重合体の製造方法。
- 請求項1に記載の変性共役ジエン系重合体10〜100重量部、前記変性共役ジエン系重合体100重量部に対して、無機充填剤0.1〜200重量部を含む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、およびこれらの混合物からなる群より選択された1種以上であることを特徴とする請求項11に記載の変性共役ジエン系重合体ゴム組成物。
- 請求項11に記載の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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KR1020150113476A KR101776391B1 (ko) | 2014-12-01 | 2015-08-11 | 아민기를 포함하는 음이온 말단을 갖는 음이온 중합 개시제, 이를 이용한 변성 공역디엔계 공중합체의 제조방법, 및 이에 따라 제조한 변성 공역디엔계 공중합체를 포함하는 고무 조성물 |
PCT/KR2015/012560 WO2016089035A1 (ko) | 2014-12-01 | 2015-11-20 | 아민기를 포함하는 음이온 말단을 갖는 음이온 중합 개시제, 이를 이용한 변성 공역디엔계 공중합체의 제조방법, 및 이에 따라 제조한 변성 공역디엔계 공중합체를 포함하는 고무 조성물 |
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JP2019515125A (ja) * | 2016-12-22 | 2019-06-06 | エルジー・ケム・リミテッド | 変性重合開始剤の製造方法及び製造装置 |
JP2020530060A (ja) * | 2017-12-05 | 2020-10-15 | エルジー・ケム・リミテッド | 変性共役ジエン系重合体およびそれを含むゴム組成物 |
JP2021505712A (ja) * | 2017-12-05 | 2021-02-18 | エルジー・ケム・リミテッド | 変性共役ジエン系重合体及びこれを含むゴム組成物 |
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KR102288852B1 (ko) | 2018-05-25 | 2021-08-12 | 주식회사 엘지화학 | 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 |
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JP2021505712A (ja) * | 2017-12-05 | 2021-02-18 | エルジー・ケム・リミテッド | 変性共役ジエン系重合体及びこれを含むゴム組成物 |
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CN106029708A (zh) | 2016-10-12 |
US9718899B2 (en) | 2017-08-01 |
EP3091040A4 (en) | 2016-11-30 |
JP6273044B2 (ja) | 2018-01-31 |
US20160347877A1 (en) | 2016-12-01 |
EP3091040A1 (en) | 2016-11-09 |
KR20160065733A (ko) | 2016-06-09 |
CN106029708B (zh) | 2019-05-03 |
KR101776391B1 (ko) | 2017-09-07 |
EP3091040B1 (en) | 2018-04-18 |
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