Stereospecific Polymerization of Olefins with Homogeneous Catalysts

Autor:	M. Buschermöhle, Walter Kaminsky
Rok vydání:	1987
Předmět:	Polypropylene chemistry.chemical_compound Stereospecificity Polymerization Cyclopentadienyl complex Chemistry Tacticity Methylaluminoxane Organic chemistry Post-metallocene catalyst Catalysis
Zdroj:	Recent Advances in Mechanistic and Synthetic Aspects of Polymerization ISBN: 9789401082709
DOI:	10.1007/978-94-009-3989-9_39
Popis:	Titanocene and zirconocene-compounds in combination with methylaluminoxane as cocatalyst form extremely active soluble Ziegler-Natta-Catalysts. One mol chiral stereorigid ethylenebis(indenyl)zirconiumdichloride yields 43.000 kg per hour highly isotactic polypropylene. 13C-nmr spectroscopically determined isotacticity lies above 99%. Working with non chiral zirconocenes as bis(cyclopentadienyl)zirconium compounds leads solely atactic polypropylene. Isotacticity is dependent on polymerization temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::191f84870f246ebaf3e66021b959f29b https://doi.org/10.1007/978-94-009-3989-9_39 Zobrazit plný text záznamu