Process for preparing polyolefins
AssigneeNippon Oil Co., Ltd.
InventorsMitsuji Miyoshi, Yoshio Tajima, Kazuo Matsuura, Nobuyuki Kuroda, Mitsuo Matsuno
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Abstract
According to this invention there is provided a process for polymerizing or copolymerizing olefins using a catalyst consisting of: [A]a solid component obtained by contacting (1) a reaction product resulting from heat reaction of a magnesium oxide and an aluminum trihalide with (2) a titanium halide and/or an addition product of a titanium halide and an aromatic carboxylic acid ester, and [B]an organometallic compound and/or an addition product of an organometallic compound and an aromatic carboxylic acid ester, or alternatively, using a catalyst consisting of acid components [A] and [B] plus [C] an aromatic carboxylic acid ester.
Claims11
A process for polymerizing or copolymerizing olefins containing from 3 to 8 carbon atoms using a catalyst consisting essentially of:
- (A) a solid component obtained by contacting
- (1) a reaction product resulting from heat reaction of magnesium oxide and an aluminum trihalide at 150.degree. C. to 600.degree. C. with
- (2) a titanium halide and/or an addition product of a titanium halide and an aromatic carboxylic acid ester, and
- (B) an organometallic compound and/or an addition product of an organometallic compound and an aromatic carboxylic acid ester;
- the total amount of aromatic carboxylic acid ester present in the polymerization system being at least 0.05 mol based on the amount of magnesium (gram-atom) contained in the catalyst system.
A process for polymerizing or copolymerizing olefins containing from 3 to 8 carbon atoms using a catalyst consisting essentially of:
- (A) a solid component obtained by contacting
- (1) a reaction product resulting from heat reaction of a magnesium oxide and an aluminum trihalide at 150.degree. C. to 600.degree. C. with
- (2) a titanium halide and/or an addition product of a titanium halide and an aromatic carboxylic acid ester,
- (B) an organometallic compound and/or an addition product of an organometallic compound and an aromatic carboxylic acid ester, and
- (C) an aromatic carboxylic acid ester;
- the total amount of aromatic carboxylic acid ester present in the polymerization system being at least 0.05 mol based on the amount of magnesium (gram-atom) contained in the catalyst system.
Dependencies are inferred from the claim text.