MODIFIED CONJUGATED DIENE POLYMER, RUBBER COMPOSITION, AND METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER

• Main Authors: OKAMOTO NAOMI, IIZUKA RYOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 23.08.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a modified conjugated diene polymer that uses a modifier of a pyrrolopyrrole derivative, and a catalyst that is relatively easy to handle, and a rubber composition containing the same, which exhibit excellent wear resistance and fuel economy.SOLUTION: This invention relates to a modified conjugated diene polymer obtained by modifying a conjugated diene polymer with (D) a pyrrolopyrrole derivative, where the conjugated diene polymer is obtained by polymerizing a conjugated diene compound with a catalyst obtained from (A) a rare earth metal compound, (B) an organic metal compound of an element selected from group 2, group 12, and group 13 in the periodic table, and (C) an ionic compound composed of a non-coordinating anion and cation.SELECTED DRAWING: None 【課題】本発明は、ピロロピロール誘導体体の変性剤と、取り扱いが比較的容易な触媒とを用いた変性共役ジエン重合体、それらを含むゴム組成物等を提供でき、耐摩耗性、低燃費性に優れる。【解決手段】 本発明は、（Ａ）希土類金属化合物、（Ｂ）周期律表第２族、１２族、１３族から選ばれる元素の有機金属化合物、（Ｃ）非配位性アニオンとカチオンとからなるイオン性化合物、から得られる触媒を用いて共役ジエン化合物を重合させた共役ジエン重合体を（Ｄ）ピロロピロール誘導体により変性された変性共役ジエン重合体に関するものであります。【選択図】なし