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丁二烯在 Co（acac）₃-Al（i-Bu）₃-含硫化合物催化体系中的定向聚合及其聚合机理

THE STEREOSPECIFIC POLYMERIZATION OF BUTADIENE WITH Co（acac）₃—Al（i-Bu）₃—SULPHUR COMPOUND CATALYST SYSTEM AND ITS POSSIBLE MECHANISM

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【Author】 LIN YUN-QING JIANG YUAN-BIN SUN SHU-HAI LIU ZHEN-HAI YANG JI-PO HU ZHEN-YA (Changchun Institute of Applied Chemistry,Academia Sinica)

【机构】中国科学院长春应用化学研究所；中国科学院长春应用化学研究所；

【摘要】在 Co（acac）₃—Al（i-Bu）₃—含硫化合物催化体系中合成了含量在97%以上的高结晶性1,2-结构的间同1,2-聚丁二烯.研究了几种含硫化合物、催化剂的组成及配比对聚合的影响.初步探讨了丁二烯间同1,2-聚合的机理.更多还原

【Abstract】 Effects of the i-Bu₂AlCl/i-Bu₃Al,i-Bu₃A1/butadiene and S/1 molor ratio,theaddition of acetonitrile and of various sulphur compounds（S）on catalytic activity ofCo（acao）₃（1）—Al（i-Bu）₃—sulphur compound catalyst system in the polymerization ofbutadiene were investigated.The polymer obtained was shown to be syndiotactic,highvinyl content（>97%）and high melting point（>200℃）by DSC,X-ray diffractionpatterns and infra-red spectral analysis.Based on the behavior of the sulphur compounda possible mechanism on syndic-1,2-polymerization of butadiene is proposed.更多还原