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（ａＰＳ），等规聚苯乙烯（ｉＰＳ），间规聚苯乙烯（ｓ?..
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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1997年第2期253-255,共3页
Acta Polymerica Sinica
基金
国家教委博士后基金
关键词
钛配合物
苯乙烯
甲基铝氧烷
间规聚合
聚苯乙烯
Titanium β diketonate complex,Methylaluminoxane,Styrene,Syndiotactic Polymerization
