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

• Main Authors: OKAMOTO NAOMI, SHIBA KOJI
• Format: Patent
• Language: English; Japanese
• Published: 07.06.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; DEVICES OR ARRANGEMENTS RELATED TO TYRES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a modified conjugated diene polymer using a modifier of a pyrimidine derivative, and a catalyst relatively easy to handle, and a rubber composition containing the same, which have excellent wear resistance and fuel economy.SOLUTION: This invention relates to a modified conjugated diene polymer that is obtained by modifying a conjugated diene polymer with (D) a pyrimidine derivative, the conjugated diene polymer 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、ピリミジン誘導体の変性剤と、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）ピリミジン誘導体により変性させ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