摘要
探讨了正辛醇／乙酸丁酯混合溶剂对ＢＦ３·ＯＥｔ２在加氢汽油中的增溶情况，考察了Ｎｉ（ｎａｐｈ）２－Ａｌ（ｉ－Ｂｕ）３－（ＢＦ３·ＯＥｔ２＋正辛醇＋乙酸丁酯）体系催化丁二烯聚合活性和水对该体系聚合活性、聚合物特性粘数、聚合速率、微观结构和相对分子质量的影响。结果表明，该混合溶剂是ＢＦ３·ＯＥｔ２的良好增溶剂。当Ｈ２Ｏ／Ａｌ（摩尔比）≤２．３时，用其增溶的催化体系聚合活性高，可制得门尼粘度高、相对分子质量分布宽、顺－１，４结构含量大于９６％的聚丁二烯。
Regarding the butadiene polymerization in Ni(naph)2-Al(i-Bu)3-(BF3·OEt2+C8H17OH+MeCOOBu) system,the solubility of BF3·OEt2 diluted by hydrogented gasoline was found to be effectively improved by the addition of the mixture of 1-octanol and butyl acetate, resulting in the enhancement of catalytic activity and the extension of Al/B mole ratio.Furthermore,when H2O/Al mole ratio was changed from 0.3 to 2.3 , the catalytic system was found to be stable and no obvious change of polymeric activity,reactivity and microstructure was observed.
出处
《合成橡胶工业》
CAS
CSCD
1997年第6期343-346,共4页
China Synthetic Rubber Industry
基金
国家自然科学基金
关键词
镍
聚合
催化剂
动力学
聚丁二烯
nickel polymerization catalyst
1-octanol
butyl acetate
butadiene
homopolymer
polymerization kinetics
polybutadiene
