发明名称 |
PREPARATION OF LOW DENSITY, LOW MODULUS ETHYLENE COPOLYMERS IN A FLUIDIZED BED |
摘要 |
Ethylene copolymers having a density of less than 0.91 g/cm<3> and a 1% secant modulus of less than 140,000 kPa are continuously prepared in a fluidized bed without particle agglomeration by continuously contacting, in such fluidized bed, at a temperature of from 10 DEG C up to 80 DEG C, a gaseous mixture containing (a) ethylene and at least one higher alph olefin in a molar ratio of such higher alpha olefin to ethylene of from 0.35:1 to 8.0:1, and (b) at least 25 mol percent of a diluent gas, with a catalyst composition prepared by forming a precursor composition from a magnesium compound, titanium compound, and electron donor compound; diluting said precursor composition with an inert carrier; and activating the diluted precursor composition with an organoaluminum compound. |
申请公布号 |
DE3462900(D1) |
申请公布日期 |
1987.05.07 |
申请号 |
DE19843462900 |
申请日期 |
1984.03.28 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
KAROL, FREDERICK JOHN;LEVINE, ISAAC JACOB;GEORGE, KATHLEEN FRANCES |
分类号 |
C08F2/34;C08F10/02;C08F210/16;(IPC1-7):C08F210/16 |
主分类号 |
C08F2/34 |
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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