摘要
研究了负载型钛催化剂ＴｉＣｌ_４／ＭｇＣｌ_２－Ａｌ（ｉ－Ｂｕ）_３体系合成反－１，４－聚异戊二烯的基本规律。结果表明，最适宜的聚合条件为：６０℃，Ａｌ／Ｔｉ＝１０（摩尔比），Ｔｉ／Ｉｐ＝２×１０￣（－４）（摩尔比），加料顺序为汽油－Ａｌ－Ｔｉ－Ｉｐ。预聚合可有效地提高催化剂效率，而对聚合物的分子量影响不大。
The trans-1,4-polyisoprene was synthesized by the polpeenzation of isoprene(Ip)with the supported titanium and triisobutylaluminium catalyst system [TiCl_4/MgCl_2-Al(i-Bu)_3]and the way to increase the catalytic efficiency was investigated through changing the polymerinzation conditions.The results showed that the optimum conditions were:temperature 60℃,Al/Ti was l0(mol ratio),Ti/Ip was 2 x l0“(mol ratio)and feeding order was gasoline-Al-Ti-Ip.The prepolymenzation could increase the catalytic efficiency and had little influence on the molecular weight of polymer.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1996年第1期37-39,共3页
China Synthetic Rubber Industry
基金
国家自然科学基金
关键词
催化剂
聚异戊二烯
配位聚合
橡胶
合成
supported titanium catalyst
trans-1,4-polyisoprene
coordination polymerization
