发明名称 |
MULTIMODALES POLYETHYLEN HERGESTELLT MIT HILFE EINES MEHRSCHICHTIGEN CHROMKATALYSATORS |
摘要 |
The present invention concerns a catalyst for the production of high density polyethylene, by homopolymerising ethylene or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10 carbon atoms, prepared by the steps of: a) selecting a silica support with a specific surface area larger than 300 m<2>/g; b) treating the silica support with a titanium compound, in order to introduce titanium into the support, or with an aluminium compound, in order to introduce aluminium into the support; c) either treating the titanated silica support with an aluminum compound, in order to introduce aluminum into the titanated silica support, or treating the aluminated silica support with a titanium compound, in order to introduce titanium into the aluminated silica support; d) depositing a chromium compound on the titanated and aluminated silica support to form a catalyst; e) activating the catalyst of step d) under air in a fluidised bed at a temperature of from 600 to 800 DEG C. |
申请公布号 |
DE60110414(D1) |
申请公布日期 |
2005.06.02 |
申请号 |
DE2001610414 |
申请日期 |
2001.06.07 |
申请人 |
TOTAL PETROCHEMICALS RESEARCH FELUY, SENEFFE |
发明人 |
BODART, PHILIPPE;LONFILS, NICODEME;DEBRAS, GUY |
分类号 |
C08F4/24;C08F4/02;C08F4/22;C08F10/00;C08F10/02;C08F110/02;C08F210/16;(IPC1-7):C08F10/02 |
主分类号 |
C08F4/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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