Abstract:
The present invention relates to high trans 1,4-polybutadiene. In order to produce the 1,4-polybutadiene that has a high transformation rate, 1,3-butadiene or a butadiene derivative is polymerized by a catalyst system, in a type of a nonpolar solvent and a novel bimetallic cobalt-aluminum adduct, to prevent gelation and to adjust molecular weight. According to the present invention, the novel catalyst in a type of a cobalt-aluminum adduct is polymerized to increase stability of oxidation and structure and a novel activation system is developed using various alkyl allyloxy aluminum to regulate reactivity of the catalyst.
Abstract:
본 발명은 비극성 용매와 신규 코발트 알루미늄 이중 금속 부가물의 형태의 촉매 시스템으로부터 1,3-부타디엔 또는 부타디엔 유도체를 중합하여 겔을 방지하며, 분자량 조절이 가능한 높은 Trans 전환율 갖는 1,4-트랜스 폴리부타디엔 제조에 관한 것이다. 코발트 알루미늄 부가물 (Aluminum adduct) 형태의 신규 촉매종을 합성하여 산화 상태 및 구조적 안정성을 높이고, 다양한 알킬 알릴록시 알루미늄을 통한 신규 활성화 시스템을 개발하여 촉매의 반응성을 조절한다.
Abstract:
PURPOSE: A novel ligand derived from tetrahydroquinoline derivative and transition metal compound are provided to ensure high activity than unfused catalyst and to obtain a polymer with higher molecular weight. CONSTITUTION: A transition metal compound is denoted by chemical formula 1. A method for preparing the transition metal compound precursor of chemical formula 2 comprises: a step of reacting tetrahydroquinoline derivative of chemical formula 3 with alkyl lithium and adding carbon dioxide to obtain a compound of chemical formula 4; and a step of reacting alkyl lithium with the compound of chemical formula 4 and adding a compound of chemical formula 5.