刘立新;李士国.茂金属SiO2的载体化研究(Ⅱ)——负载条件对rac—Et(Ind)2Zr ….大庆石油学院学报.2000.32-34刘立新,李士国,程延昭,姜涛,胡友良,LIU Li-xin,LI Shi-guo,CHENG Yan-zhao,JIANG Tao,HU You-liang. 茂金属SiO2的载体化研究(Ⅱ)--负载条件对rac-Et(Ind)2ZrCl2性能的影响[J].大庆石油学院...
The slurry homopolymerization of propylene catalyzed by the isospecific metallocene rac-Et(Ind)2ZrCl2/MAO was investigated using a semi-batch reactor. A full factorial design with three temperatures (50, 65 and 75掳C) and four monomer partial pressures (1.5, 2.5, 3.2, and 3.8 atm) was ...
The kinetics of ethylene polymerization with rac-Et(Ind)2ZrCl2/methylaluminoxane (MAO) in a semibatch solution reactor are investigated. The effects of ethylene concentration, polymerization temperature, and MAO concentration are studied to determine the polymerization and chain-transfer rate constants, ...
采用乙基桥连二茚基二茚基二氯 化锆(rac-Et[Ind]2ZrCl2)/MMAO催化体系催化乙烯/降冰片烯共聚合,比较了甲苯,苯,正己烷,环己烷及其混合溶剂作为反应介质对共 聚合活性及共聚物结构的影响.通过差示扫描量热分析(DSC)对共聚产物进行了热力学性质的表征.结果表明,聚合活性和产品的玻璃化转变温度(Tg)在不 同溶剂体系...
刘立新;李士国.茂金属SiO2的载体化研究(Ⅱ)——负载条件对rac—Et(Ind)2Zr ….大庆石油学院学报.2000.32-34刘立新,李士国,程延昭,姜涛,胡友良,LIU Li-xin,LI Shi-guo,CHENG Yan-zhao,JIANG Tao,HU You-liang. 茂金属SiO2的载体化研究(Ⅱ)--负载条件对rac-Et(Ind)2ZrCl2性能的影响[J].大庆石油学院...
采用只在球形MgCl2上负载MAO,聚合前再同rac-Et[Ind]2ZrCl2预混的负载方式进行丙烯聚合.在少量AlEt3的活化下,很低的Al(MAO)/Zr摩尔比时即可获得比均相催化剂高一个数量级的活性,考察了温度,压力,Al(MAO)/Zr摩尔比和催化剂浓度对聚合的影响,同时用13C NMR测定了均相和载体催化体系所制备的聚丙烯的微结构,发现...
Microstructure analysis of ethylene/1-hexene co-polymers with embedded rac-Et[Ind]2ZrCl2 metallocene catalyst. D. M. Shin,V. H. Pham,K. W. La,I. K. Song,J. S. Chung, et al. Res. Chem. Interned . 2008Mi?rostructure analysis of ethylene/1-hexene co-polymers with embedded rac-Et ...
茂金属SiO2的载体化研究(Ⅰ)-rac-Et(Ind)2ZrCl2在SiO2上的负载方式[J].大庆石油学院学报,2000,(03):30-33.doi:10.3969/j.issn.2095-4107.2000.03.008.阎卫东,刘立新,姜涛,吴殿义,胡友良,YAN Wei-dong,LIU Li-xin,JIANG Tao,WU Dian-yi,HU You-liang. 茂金属SiO2的载体化研究(Ⅰ)--r...
Polypropylene was synthesized using binary metallocene catalysts, rac-ethylenebis-(1-畏5-indenyl)-zirconium dichloride (rac-Et(Ind)2ZrCl2: Cata A) and zirconocene dichloride (Cp2ZrCl2: Cata B), in the presence of ZnEt2. The results indicated that ZnEt2 was an effective agent in modulating ...
Polypropylene was synthesized using binary metallocene catalysts, rac-ethylenebis-(1-5-indenyl)-zirconium dichloride (rac-Et(Ind)ZrCl: Cata A) and zirconocene dichloride (CpZrCl: Cata B), in the presence of ZnEt. The results indicated that ZnEtwas an effective agent in modulating isotactivity ...