【摘要】 β二酮钛配合物／甲基铝氧烷催化体系用于苯乙烯的间规聚合许学翔谢光华（中国科学院化学研究所北京１０００８０）关键词β二酮钛配合物，苯乙烯，甲基铝氧烷，间规聚合苯乙烯聚合物可分为无规聚苯乙烯（ａＰＳ），等规聚苯乙烯（ｉＰＳ），间规聚苯乙烯（ｓ?..更多还原

【Abstract】 Titanium β diketonate complexes in combination with methylaluminoxane (MAO) as cocatalyst are highly active towards styrene polymerization,giving polymers with high sydiotacticity and high molecular weights.The results of polymerization showed that the catalytic activity of dibenzoylmethane complexes/MAO is higher than that of acetylacetone complexes/MAO,molecular weight and syndiotacticity of polymers from the former is lower than that from the latter.The molecular weight distribution of polymers is broader,indicating the titanium β diketonate complexes may be a “multi site” catalyst.更多还原