Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1990-04-26
1994-07-19
Smith, Edward J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502156, 502242, 502251, 502263, 502439, 502120, 502125, 526 97, 526124, 526351, 526348, 5263486, 525268, C08F 4654, C08F 4656, C08F 1000
Patent
active
053309499
ABSTRACT:
A method for producing a polyolefin is disclosed which comprises polymerizing an .alpha.-olefin in the presence of a catalyst composition comprising (A) a solid catalyst component prepared by contacting (a) a solid component comprising a magnesium alkoxide and/or a magnesium salt of a fatty acid supported on an inorganic oxide composed of at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table and/or a composite inorganic oxide containing at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table, the inorganic oxide or composite inorganic oxide having a surface hydroxide concentration of 3 .mu.mol/m.sup.2 or less, (b) an electron donating compound and (c) a titanium halide, (B) an organic metal compound, and (C) an electron donating compound.
According to the method, a step of removing the catalyst residue: from the polypropylene produced can be eliminated and the products have well balanced mechanical strength such as stiffness and impact strength.
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Funabashi Hideo
Kasahara Toshikazu
Ohnishi Rikuo
Tanaka Akira
Yamawaki Takashi
Idemitsu Petrochemical Company Ltd.
Smith Edward J.
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