摘要
以ＷＣｌ_６（Ｗ）为催化剂，分别与四种烷基铝组成催化体系，以苯乙烯（Ｓｔ）、丁二烯（Ｂｄ）为单体，在６０～７０℃下聚合５ｈ，可获得高乙烯基丁苯共聚物。结果表明，以Ｗ－Ａｌ（ｉ－Ｂｕ）_２Ｃｌ（Ａｌ）组成的催化体系，在Ａｌ／Ｗ＝３．５（摩尔比），陈化３０ｍｉｍ以上时，活性最高，所得丁苯共聚物［η］＝０．２５～０．６５ｄＬ／ｇ，乙烯基含量大于５０％（摩尔），结合Ｓｔ含量为１０％～４０％（摩尔）。
The high vinyl butadiene-styrene coploymer was prepared with WCL_6(W)and Al(i-Bu)_2Cl (Al)hydrogenated gasoline catalyst system,styrene and butadiene as monomers at 60～70℃ for 5h.The results showed that the catalyst system had the highest catalytic activity when the molar ratio of Al/W was 3.5,aging time was above 30min.The[η]of obtained vinyl butadiene-styrene copolymer was 0.25～0.65dL/g,and vinyl content more than 50%.
出处
《合成橡胶工业》
CSCD
北大核心
1994年第6期355-357,共3页
China Synthetic Rubber Industry
关键词
钨系
催化体系
丁二烯
苯乙烯
丁苯橡胶
tungsten catalyst system
butadiene
styrene
solution polymerization
copolymer
microstructure
Ziegler-Natta catalyst
catalytic activity
