To provide a production method of a conjugate diene polymer, by which physical properties of a polymer to be produced are prevented from degrading as well as processability of the polymer can be improved, and to provide a rubber composition and a tire using the polymer.SOLUTION: The production method of a conjugate diene polymer comprises solution polymerization of a conjugate diene compound monomer (1) expressed by general formula (1) (where Rand Rrepresent a hydrogen atom or the like) in the presence of a metal catalyst. In the production method, a protonic organic compound (2) expressed by general formula (2): R-(X)-OH (where Rrepresents a hydrocarbon group having 9 to 30 carbon atoms; and X represents CO or the like) is used as a polymerization terminator, and/or a metal salt of the protonic organic compound (2) is used as an additive after terminating the polymerization.SELECTED DRAWING: None
【課題】生成する重合体(ポリマー)の物理特性を悪化させず、加えて、加工性をも向上させ得る、共役ジエン重合体の製造方法並びにこれを使用するゴム組成物およびタイヤを提供しようとすること。【解決手段】一般式(1)(式中、R1およびR2は、水素原子等を表す。)で示される共役ジエン化合物モノマー(1)を、金属触媒の存在下、溶液重合することを含んでなる共役ジエン重合体の製造方法において、重合停止剤として、一般式(2)R3−(X)−OH (2)(式中、R3は炭素数9〜30の炭化水素基を表し、XはCO等を表す。)で示されるプロトン性有機化合物(2)を使用し、および/または、重合反応停止後の添加剤として、プロトン性有機化合物(2)の金属塩を配合する共役ジエン重合体の製造方法。【選択図】なし
PRODUCTION METHOD OF CONJUGATE DIENE POLYMER, RUBBER COMPOSITION, AND PNEUMATIC TIRE
共役ジエン重合体の製造方法、ゴム組成物および空気入りタイヤ
2018-12-13
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 / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
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