发明名称 |
PROCEDE POUR OBTENIR UN POLYETHYLENE A MASSE MOLECULAIRE PLUS GRAND 500.000 |
摘要 |
1451292 Polyethylene production using Ziegler catalyst RUHRCHEMIE AG 9 Dec 1974 [11 Dec 1973] 53141/74 Heading C3P Polyethylene having a molecular weight above 500,000 is obtained by polymerizing ethylene at 30‹ to 130‹ C. in the presence of a Ziegler catalyst comprising (A) a titanium III halide, (B) an organoaluminium compound and (C) an alcohol, the molar raio of (A) to (B) being between 5 : 1 and 1 : 5, the proportion of (C) being 2 to 10 moles per kg. of (A) + (B), and the ethylene monomer containing less than 5 p.p.m. oxygen. Component (C) may be mono- or polyhydric alcohol. The examples refer to batch or continuous ethylene polymerization using a suitably pure monomer, a purified hydrocarbon fraction as diluent, and a catalyst comprising (A) TiCl 3 obtained from TiCl 4 + Et 2 AlCl, (B) Et 2 AlCl and (C) butanol. The minimal oxygen content in the monomer feed ensures that films and deposits on the polymerization vessels and stirrers are largely eliminated. |
申请公布号 |
RO66062(A) |
申请公布日期 |
1979.03.15 |
申请号 |
RO19740080722 |
申请日期 |
1974.12.06 |
申请人 |
RUHRCHEMIE AG,DE |
发明人 |
KOLLING,HELMUT,DE;RAPPEN,FRIEDERICH,DE;GEISER,NIKOLAUS,DE |
分类号 |
C08F4/00;C08F4/60;C08F4/64;C08F4/649;C08F10/02;C08F110/02;(IPC1-7):08F4/64;08F4/14 |
主分类号 |
C08F4/00 |
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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