PROBLEM TO BE SOLVED: To provide a production process for a conjugated diene-based rubber that has an excellent storage stability.SOLUTION: Provided is a conjugated diene-based rubber production process including: a first step of polymerizing a monomer containing a conjugated diene compound in an inert solvent using a polymerization initiator to prepare a solution containing a conjugated diene-based polymer chain having an active terminal; a second step of adding a particular amount of a tin-containing coupling agent and/or a silicon-containing coupling agent having 6 or more reaction points capable of reacting with the active terminal of the conjugated diene-based polymer chain to said solution containing a conjugated diene-based polymer chain having an active terminal to react; a third step of adding a particular amount of siloxane to the solution containing the conjugated diene-based polymer chain reacted with the tin-containing coupling agent and/or the silicon-containing coupling agent to react; and a forth step of adding a particular amount of tetramethoxysilane to the solution containing the conjugated diene-based polymer chain reacted with siloxane to react.SELECTED DRAWING: None
【課題】貯蔵安定性に優れる共役ジエン系ゴム製造方法の提供。【解決手段】不活性溶媒中で、重合開始剤を用いて、共役ジエン化合物を含む単量体を重合し、活性末端を有する共役ジエン系重合体鎖を含有する溶液を得る第1工程と、活性末端を有する共役ジエン系重合体鎖を含有する溶液に、特定量の、錫含有カップリング剤および/または前記共役ジエン系重合体鎖の活性末端と反応可能な反応点を6以上有するケイ素含有カップリング剤を添加し、反応させる第2工程と、錫含有カップリング剤および/またはケイ素含有カップリング剤を反応させた共役ジエン系重合体鎖を含有する溶液に、特定量のシロキサンを添加して、反応させる第3工程と、シロキサンを反応させた共役ジエン系重合体鎖を含有する溶液に、特定量のテトラメトキシシランを添加して、反応させる第4工程と、を備える共役ジエン系ゴムの製造方法を提供する。【選択図】なし
CONJUGATED DIENE-BASED RUBBER PRODUCTION PROCESS
共役ジエン系ゴムの製造方法
2017-10-12
Patent
Elektronische Ressource
Japanisch
IPC: | C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / B60C VEHICLE TYRES , Fahrzeugreifen / C08C TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS , Behandlung oder chemische Modifizierung von Kautschuken / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
Europäisches Patentamt | 2017
Europäisches Patentamt | 2017
|Europäisches Patentamt | 2017
|Europäisches Patentamt | 2017