To provide a hydrogenated random copolymer which has excellent productivity and processability, and moreover when, for example, made into a tire tread, has excellent abrasion resistance.SOLUTION: A method for producing a hydrogenated random copolymer comprises: a polymerization step of polymerizing an aromatic vinyl compound and a conjugated diene compound to obtain a polymer; and a hydrogenation reaction step of performing a hydrogenation reaction by adding hydrogen to the obtained polymer to obtain a hydrogenated random copolymer. In the hydrogenation reaction step, Mooney stress relaxation at 100°C of the obtained hydrogenated random copolymer is adjusted to 0.85 or more to less than 1.05 relative to Mooney stress relaxation at 100°C of the polymer before hydrogenation and, in the hydrogenation reaction step, Mooney viscosity at 100°C of the obtained hydrogenated random copolymer is adjusted to 80 to 200.SELECTED DRAWING: None
【課題】本発明は、生産性、加工性に優れ、更に、例えば、タイヤトレッドにした際の耐摩耗性に優れる水添ランダム共重合体の提供を目的とする。【解決手段】芳香族ビニル化合物及び共役ジエン化合物を重合して重合体を得る重合工程と、得られた重合体に水素を添加して水添反応を行うことにより水添ランダム共重合体を得る水添反応工程と、を有し、前記水添反応工程において、得られる水添ランダム共重合体の100℃のムーニー応力緩和を水素添加前の重合体の100℃のムーニー応力緩和に対して0.85以上1.05未満とし、前記水添反応工程において、得られる水添ランダム共重合体の100℃のムーニー粘度を80以上200以下とする、水添ランダム共重合体の製造方法。【選択図】なし
METHOD FOR PRODUCING HYDROGENATED RANDOM COPOLYMER
水添ランダム共重合体の製造方法
2022-04-07
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 / 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 |
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