以氯代钒酸酯-三异丁基铝催化体系合成丁二烯-丙烯交替共聚物的研究

高等学校化学学报 ›› 1982, Vol. 3 ›› Issue (1): 67.

以氯代钒酸酯-三异丁基铝催化体系合成丁二烯-丙烯交替共聚物的研究

焦书科, 余鼎声, 戚银城

北京化工学院高分子系

收稿日期:1981-01-27 出版日期:1982-01-25 发布日期:1982-01-25

STUDIES ON THE ALTERNATING COPOLYMERIZATION OF BUTADIENE AND PROPYLENE IN THE PRESENCE OF CHLORO-VANADATE-TRIISOBUTYLALUMINIUM CATALYST SYSTEM

Jiao shuke, Yu Dingsheng, Qi Yincheng

Department of Macromolecules, Beijing Institute of Chemical Technology, Beijing

Received:1981-01-27 Online:1982-01-25 Published:1982-01-25

摘要/Abstract

摘要： 本文比较了各种氯代钒酸酯-三异丁基铝体系催化丁二烯、丙烯交替共聚的活性,得出氯代钒酸二新戊酯-三异丁基铝体系催化活性最高。能制得高分子量的交替共聚物。研究了该催化体系的特点和聚合规律及提高共聚物[η]的途径。在-76—-45℃温度范围内可以制得正[η]为1.7—2.6dl/g的丁丙交替共聚物,单体转化率在80％以上。通过分析鉴定,证明产物交替度在95％左右,反式1,4丁二烯组分含量在95％以上。

Abstract: The catalytic activities of various chlorp-vanadates-triispbutylalumin-ium systems in alternating copolymerization of butadiene and propylene have been compared. It was found that the catalyst system consisted of neopentylchlorovanadate-triisobutylaluminium can give .high molecular weight alternating copolymers of butadiene and propylene in high yield.The character and behavior of the alternating copolymerization and the ways for increasing [η] of the copolymer have also been studied.Thus an alternating copolymer of butadiene and propylene .with inherentviscosity 1.7-2.6 dl/g was obtained at -76--45℃, the conversion ofwhich was more than 80%.The resulting copolymers were analyzed by IR and NMR, it was demonstrated that the alternating degree of the copolymers was about 95% and the content of trans-1,4 butadiene unit in the copolymers was above

TrendMD:

焦书科, 余鼎声, 戚银城. 以氯代钒酸酯-三异丁基铝催化体系合成丁二烯-丙烯交替共聚物的研究. 高等学校化学学报, 1982, 3(1): 67.

Jiao shuke, Yu Dingsheng, Qi Yincheng. STUDIES ON THE ALTERNATING COPOLYMERIZATION OF BUTADIENE AND PROPYLENE IN THE PRESENCE OF CHLORO-VANADATE-TRIISOBUTYLALUMINIUM CATALYST SYSTEM. Chem. J. Chinese Universities, 1982, 3(1): 67.