发明授权
US4434280A Polymerization process using surface heat treated silica-containing
catalyst base
失效
使用表面热处理二氧化硅的催化剂基团的聚合方法
- 专利标题： Polymerization process using surface heat treated silica-containing catalyst base
- 专利标题（中）： 使用表面热处理二氧化硅的催化剂基团的聚合方法
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申请号： US427255申请日： 1982-09-29
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公开(公告)号： US4434280A公开(公告)日： 1984-02-28
- 发明人: Max P. McDaniel , M. Bruce Welch
- 申请人： Max P. McDaniel , M. Bruce Welch
- 申请人地址： OK Bartlesville
- 专利权人： Phillips Petroleum Company
- 当前专利权人： Phillips Petroleum Company
- 当前专利权人地址： OK Bartlesville
- 主分类号： B01J21/06
- IPC分类号： B01J21/06 ; B01J23/26 ; C08F10/02 ; C08F4/02 ; C08F4/24
摘要：
A silica base for a chromium olefin polymerization catalyst is subjected to a high temperature treatment as for instance by passing the silica through a flame in order to alter the surface characteristics. The chromium can be present during the flame treatment or added later. The result is a catalyst capable of giving a broader molecular weight distribution polymer which is of particular value with the silica-titania coprecipitated catalyst used in slurry olefin polymerization.
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