Temperature effect on ethylene polymerization with a catalyst prepared by mixing Mg(C2H5)(n-C4H9), Al(C2H5)1.5Cl1.5 and iron(II)bis (imino)pyridyl complex
| Autor: | Junichi Amano, Takehito Konakazawa, Rikuo Ohnishi, Takenori Fujimura |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
chemistry.chemical_classification
Schiff base Polymers and Plastics Magnesium chemistry.chemical_element Chain transfer General Chemistry Polymer Polyethylene Condensed Matter Physics Catalysis chemistry.chemical_compound chemistry Polymerization Pyridine Polymer chemistry Materials Chemistry Organic chemistry |
| Zdroj: | Polymer Bulletin. 56:1-8 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/s00289-005-0460-8 |
| Popis: | Ethylene polymerization was conducted with a catalyst prepared by mixing 2,6-bis{1-[2,6-(diisopropylphenyl)imino]ethyl}pyridine iron dichloride, Mg(C2H5)(n-C4H9) and Al(C2H5)1.5Cl1.5 in the presence of common alkylaluminium as cocatalyst. Both the activity and the molecular weight of polymers produced were markedly dependent upon the polymerization temperature. The end-group analysis of polymers showed that the molecular weight of polymers produced at higher temperature was reduced by chain transfer with Al(C2H5)3 in addition to β-hydrogen elimination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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