Method for producing solid catalyst component for α-olefin polymerization and method for producing α-olefin polymer using the same
AssigneeJapan Polypropylene Corporation
InventorsKeiji Fukuda, Shouichi Ida, Akio Tanna, Shigeo Mizukami
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Abstract
A method for producing a solid catalyst component (Aa) for α-olefin polymerization, which includes: bringing components (A1) to (A4) into contact with one another in an inert solvent; and without washing the contact product with an inert solvent, aging the contact product by keeping for a holding time of 3 days or more and 180 days or less, regarding the time point that all of the components (A1) to (A4) first come into contact, as a starting point.
Claims12
A method for producing a solid catalyst component (Aa) for α-olefin polymerization, which comprises:
- bringing the following components (A1) to (A4) into contact with one another in an inert solvent to form a contact product;
- and
- without washing the contact product with an inert solvent, aging the contact product by keeping for a holding time of 3 days or more and 180 days or less, regarding the time point that all of the components (A1) to (A4) first come into contact, as a starting point:
- Component (A1):
- a solid component containing titanium, magnesium, a halogen, and an electron-donating compound as essential components;
- Component (A2):
- a silane compound having an alkenyl group;
- Component (A3):
- an alkoxysilane compound which is different from the silane compound having an alkenyl group;
- Component (A4):
- an organoaluminum compound.
A method for producing a solid catalyst component (Ab) for α-olefin polymerization, which comprises:
- bringing the following components (A1) to (A4) into contact with one another in an inert solvent to form a contact product;
- without washing the contact product with an inert solvent, bringing the contact product into contact with an ethylenically unsaturated hydrocarbon, to perform a pre-polymerization treatment and form a pre-polymerization treatment product;
- and
- without washing the pre-polymerization treatment product with an inert solvent, aging the pre-polymerization treatment product by keeping for a holding time of 3 days or more and 180 days or less, regarding the time point that all of the components (A1) to (A4) first come into contact, as a starting point:
- Component (A1):
- a solid component containing titanium, magnesium, a halogen, and an electron-donating compound as essential components;
- Component (A2):
- a silane compound having an alkenyl group;
- Component (A3):
- an alkoxysilane compound which is different from the silane compound having an alkenyl group;
- Component (A4):
- an organoaluminum compound.
Dependencies are inferred from the claim text.