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Disiloxane bridged binuclear titanocene catalysts for ethylene polymerization
Feng, R; Su, LM; He, DW; Wang, BQ; Tian, GL; Xu, SS; Zhou, XZ
1998-06-01
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue3Pages:360-363
AbstractTwo tetramethyldisiloxanediyl bridged binuclear titanocenes Cl2CpTiCp * (CH3)(2)SiOSi(CH3)(2)Cp*TiCpCl2(Cp * = substituted cyclopendienyl, R = H in catalyst A, R = Si(CH3)(3) in catalyst B) have been synthesized by the reacting dilithium salts of Cp*(CH3)(2)SiOSi(CH3)(2)Cp* with CpTiCl3 in the yields of 42% and 51% respectively. Their catalysis behavior for the polymerization of ethylene under different conditions were investigated, and compared with mononuclear metallocene, cyclopentadienyl-titanium dichloride. The result showed that these two catalysts have a middle activity for ethylene polymerization. The MWD of the polyethylene were rather wide and the highest molecular weight was as high as 5.9 x 10(4) g/mol. Furthermore, catalyst B exhibited unexpected temperature dependence for ethylene polymerization.
KeywordBinuclear Titanocene Ethylene Homogeneous Polymerization
Indexed BySCI
Language英语
WOS IDWOS:000076400200018
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/74794
Collection中国科学院化学研究所
Corresponding AuthorFeng, R
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
2.Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
Recommended Citation
GB/T 7714
Feng, R,Su, LM,He, DW,et al. Disiloxane bridged binuclear titanocene catalysts for ethylene polymerization[J]. ACTA POLYMERICA SINICA,1998(3):360-363.
APA Feng, R.,Su, LM.,He, DW.,Wang, BQ.,Tian, GL.,...&Zhou, XZ.(1998).Disiloxane bridged binuclear titanocene catalysts for ethylene polymerization.ACTA POLYMERICA SINICA(3),360-363.
MLA Feng, R,et al."Disiloxane bridged binuclear titanocene catalysts for ethylene polymerization".ACTA POLYMERICA SINICA .3(1998):360-363.
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