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Tuning the ligand structure in metallocene polymerization catalysts
Author(s) -
Kaminsky Walter,
Freidanck Frank
Publication year - 2002
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200207)183:1<89::aid-masy89>3.0.co;2-l
Subject(s) - metallocene , copolymer , materials science , thermoplastic elastomer , polymer , catalysis , polymer chemistry , polymerization , ligand (biochemistry) , elastomer , post metallocene catalyst , octene , 1 octene , tacticity , thermoplastic , polymer science , chemical engineering , composite material , organic chemistry , chemistry , biochemistry , receptor , engineering
Meso‐[Me 2 Si(2‐Me‐4,6‐ i Pr 2 Ind) 2 ZrCl 2 was synthesized in a pure form and used as catalyst for the copolymerization of ethene and α‐olefins. The results are compared with polymers obtained by C 1 ‐symmetric metallocenes and constrained geometry catalysts. The activity of the meso form is remarkable high and reaches more than 1 kg polymer/mol Zr · h. The ligand structure has large influence on the incorporation of 1‐octene forming thermoplastics (LLDPE) and thermoplastic elastomers (POE).