Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene
We report here the synthesis of two new ansa-bridged permethylindenyl zirconocenes, their reaction with solid polymethylaluminoxane (sMAO) and their use in slurry phase ethylene polymerisation. Meso-(EBI*)Zr(CH2Ph)2 and meso-(EBI*)Zr(CH2tBu)Cl, (EBI* = ethylenebis[1-(2,3,4,5,6,7-hexamethylindenyl)])...
| Hoofdauteurs: | , , , |
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| Formaat: | Journal article |
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Elsevier
2016
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| _version_ | 1826273790868324352 |
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| author | Arnold, T Turner, Z Buffet, J O'Hare, D |
| author_facet | Arnold, T Turner, Z Buffet, J O'Hare, D |
| author_sort | Arnold, T |
| collection | OXFORD |
| description | We report here the synthesis of two new ansa-bridged permethylindenyl zirconocenes, their reaction with solid polymethylaluminoxane (sMAO) and their use in slurry phase ethylene polymerisation. Meso-(EBI*)Zr(CH2Ph)2 and meso-(EBI*)Zr(CH2tBu)Cl, (EBI* = ethylenebis[1-(2,3,4,5,6,7-hexamethylindenyl)]) were synthesised from meso-(EBI*)ZrCl2 and KCH2Ph and LiCH2tBu respectively. The new zirconocenes were characterised by NMR spectroscopy and X-ray crystallography, and density functional theory calculations were carried out. Solid precatalysts were obtained when these compounds were reacted with the polymethylaluminoxane support. Ethylene polymerisation activities of up to 6000 kgPE/molZr/h/bar were obtained in the slurry polymerisation of ethylene. The polyethylenes showed molecular weights, Mw, above 200 000 kg/mol and low polydispersities, Mw/Mn < 3. |
| first_indexed | 2024-03-06T22:33:34Z |
| format | Journal article |
| id | oxford-uuid:5916867a-09fe-40b9-a68b-439b2d17d5c8 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:33:34Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:5916867a-09fe-40b9-a68b-439b2d17d5c82022-03-26T17:07:47ZPolymethylaluminoxane supported zirconocene catalysts for polymerisation of ethyleneJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5916867a-09fe-40b9-a68b-439b2d17d5c8Symplectic Elements at OxfordElsevier2016Arnold, TTurner, ZBuffet, JO'Hare, DWe report here the synthesis of two new ansa-bridged permethylindenyl zirconocenes, their reaction with solid polymethylaluminoxane (sMAO) and their use in slurry phase ethylene polymerisation. Meso-(EBI*)Zr(CH2Ph)2 and meso-(EBI*)Zr(CH2tBu)Cl, (EBI* = ethylenebis[1-(2,3,4,5,6,7-hexamethylindenyl)]) were synthesised from meso-(EBI*)ZrCl2 and KCH2Ph and LiCH2tBu respectively. The new zirconocenes were characterised by NMR spectroscopy and X-ray crystallography, and density functional theory calculations were carried out. Solid precatalysts were obtained when these compounds were reacted with the polymethylaluminoxane support. Ethylene polymerisation activities of up to 6000 kgPE/molZr/h/bar were obtained in the slurry polymerisation of ethylene. The polyethylenes showed molecular weights, Mw, above 200 000 kg/mol and low polydispersities, Mw/Mn < 3. |
| spellingShingle | Arnold, T Turner, Z Buffet, J O'Hare, D Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| title | Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| title_full | Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| title_fullStr | Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| title_full_unstemmed | Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| title_short | Polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| title_sort | polymethylaluminoxane supported zirconocene catalysts for polymerisation of ethylene |
| work_keys_str_mv | AT arnoldt polymethylaluminoxanesupportedzirconocenecatalystsforpolymerisationofethylene AT turnerz polymethylaluminoxanesupportedzirconocenecatalystsforpolymerisationofethylene AT buffetj polymethylaluminoxanesupportedzirconocenecatalystsforpolymerisationofethylene AT ohared polymethylaluminoxanesupportedzirconocenecatalystsforpolymerisationofethylene |