Solvent effect on cis-l,4-specific polymerization of 1,3-butadiene with CoCl2(PRPh2)2-EASC catalytic systems

Qinzhuo Zhou; Bo-Geng Li; Suyun Jie

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Solvent effect on cis-l,4-specific polymerization of 1,3-butadiene with CoCl2(PRPh2)2-EASC catalytic systems

机译：用COCL2（PRPH2）2-EASC催化系统对顺式L的溶剂效应1,3-丁二烯的四特异性聚合

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A series of phosphine-containing cobalt complexes [CoCl2(PRPh2)2, R = Ph (1), Cy (2), ~nPr (3), Et (4), Me (5), H (6)] has been used for the highly active and stereospecific polymerization of 1,3-butadiene upon activation with ethylaluminum sesquichloride (EASC). The high catalytic activities and polybutadienes with high cis-1,4 selectivity were obtained in the solution polymerization in toluene. The conversion of butadiene and the microstructure and molecular weight of the resulting polymers were affected by reaction parameters and the R group on the phosphine ligand. The dispersion medium was also a sensitive factor for the current catalytic systems, influencing the catalytic activity and properties of products. In comparison with the solution polymerization in toluene, the heterogeneous polymerization in isooctane yielded slightly lower catalytic activity, c/s-1,4 content and molecular weight under similar reaction conditions.

机译：一系列含磷酸的钴复合物[COCL2（PRPH2）2，R = pH（1），CY（2），〜NPR（3），ET（4），ME（5），H（6）] 用乙氯乙酯（EASC）激活后，用于1,3-丁二烯的高度活性和立体特异性聚合。在甲苯中的溶液聚合中获得了高催化活性和具有高顺式1,4的多丁二烯。所得聚合物的丁二烯以及微结构和分子量的转化受反应参数和磷酸配体上的R组的影响。色散介质也是当前催化系统的敏感因素，影响了产品的催化活性和性能。与甲苯中的溶液聚合相比，异辛烷中的异质性聚合在相似的反应条件下产生略低的催化活性，C/S-1,4含量和分子量。

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来源
《Catalysis science & technology》 |2014年第3期|773-779|共7页
作者
Qinzhuo Zhou; Bo-Geng Li; Suyun Jie;
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作者单位

State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.;

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正文语种英语
中图分类汉语教学;
关键词
Butadiene; Catalysis; Molecular weightsdispersive mediapolybutadienesolvent effects2,2,4-trimethylpentaneCatalyst activityPolymerizationToluene;

机译：丁二烯;催化;分子量分散性培养基丙二烯酸酯效应2,2,4-三甲基戊烷催化剂活性蛋白酶化tolueneTolueneToluene;

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Solvent effect on cis-l,4-specific polymerization of 1,3-butadiene with CoCl2(PRPh2)2-EASC catalytic systems

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