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US 4,357,452 AGranted
Process for polymerizing propylene
AssigneeMitsubishi Chemical Industries Limited
InventorsGenjiro Kakogawa, Masayoshi Hasuo, Yoshinori Suga, Hisashi Kitada, Yumito Uehara
Life of this patent
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Abstract
Propylene is polymerized in the presence of a catalytic system of the type which comprises a solid titanium trichloride-based complex serving as a catalyst, said complex having an atomic ratio of aluminum to titanium in the range of below 0.15:1 and containing a complexing agent, and an organic aluminum compound of the general formula, AlR.sup.1.sub.n Cl.sub.3-n wherein R.sup.1 represents an n-propyl group or an n-hexyl group and n is a value of 1.95-2.10. The catalytic system may further comprise an electron-donor compound as a third catalytic component.
Claims15
A process for polymerizing propylene, which comprises:
- polymerizing propylene in the presence of a catalyst system composed of:
- (A) a solid titanium trichloride-based complex which is a fine particulate solid obtained by reducing titanium tetrachloride with an organic aluminum compound and treating the reduction product with an ether or a thioether and then with titanium tetrachloride, and which is expressed by the formula:
- TiCl.sub.3.(AlR.sub.p.sup.3 X.sub.3-p).sub.x.(C).sub.y,
- wherein R.sup.3 is a hydrocarbon group of 1-20 carbon atoms, X is a halogen atom, p is a value within the range of 0.ltoreq.p.ltoreq.2, C is an ether or a thioether, x is a value less than 0.15 and y is a value greater than 0.001, and
- (B) an organic aluminum cocatalyst of the formula:
- AlR.sub.n.sup.1 Cl.sub.3-n'
- wherein R.sup.1 is a n-propyl group or a n-hexyl group and n is a value of 1.95-2.10.
4 more elements
A process for polymerizing propylene, which comprises:
- polymerizing propylene in the presence of a catalyst system composed of
- (A) a solid titanium trichloride-based complex which is a fine particulate solid obtained by reducing titanium tetrachloride with an organic aluminum compound and treating the reduction product with an ether or a thioether and then with titanium tetrachloride, and which is expressed by the formula:
- TiCl.sub.3.(AlR.sub.p.sup.3 X.sub.3-p).sub.x.(C).sub.y,
- wherein R.sup.3 is a hydrocarbon group of 1-20 carbon atoms, X is a halogen atom, p is a value within the range of 0.ltoreq.p.ltoreq.2, C is an ether or a thioether, x is a value less than 0.15 and y is a value greater than 0.001;
- (B) an organic aluminum cocatalyst of the formula:
- AlR.sub.n.sup.1 Cl.sub.3-n,
- wherein R.sup.1 is a n-propyl group or a n-hexyl group and n is a value of 1.95-2.10;
- and
- (C) an electron donor compound.
6 more elements
A process for polymerizing propylene, which comprises:
- polymerizing propylene in the presence of a catalyst system composed of
- (A) a solid titanium trichloride-based complex which is a fine particulate solid obtained by reducing titanium tetrachloride with an organic aluminum compound and treating the reduction product with an ether or a thioether and then with carbon tetrachloride and which is expressed by the formula:
- TiCl.sub.3.(AlR.sub.p.sup.3 X.sub.3-p).sub.x.(C).sub.y,
- wherein R.sup.3 is a hydrocarbon group of 1-20 carbon atoms, X is a halogen atom, p is a value within the range of 0.ltoreq.p.ltoreq.2, C is an ether or a thioether, x is a value less than 0.15 and y is a value greater than 0.001;
- and
- (B) an organic aluminum cocatalyst of the formula:
- AlR.sub.n.sup.1 Cl.sub.3-n,
- wherein R.sup.1 is a n-propyl group or a n-hexyl group and n is a value of 1.95-2.10.
5 more elements
A process for polymerizing propylene, which comprises:
- polymerizing propylene in the presence of a catalyst system composed of
- (A) a solid titanium trichloride-based complex which is a fine particulate solid obtained by reducing titanium tetrachloride with an organic aluminum compound and treating the reduction product with an ether or a thioether and then with carbon tetrachloride, and which is expressed by the formula:
- TiCl.sub.3.(AlR.sub.p.sup.3 X.sub.3-p).sub.x.(C).sub.y,
- wherein R.sup.3 is a hydrocarbon group of 1-20 carbon atoms, X is a halogen atom, p. is a value within the range of 0.ltoreq.p.ltoreq.2, C is an ether or a thioether, x is a value less than 0.15 and y is a value greater than 0.001;
- (B) an organic aluminum cocatalyst of the formula:
- AlR.sub.n.sup.1 Cl.sub.3-n,
- wherein R.sup.1 is a n-propyl group or a n-hexyl group and n is a value of 1.95-2.10;
- and
- (C) an electron donor compound.
6 more elements
A process for polymerizing propylene, which comprises:
- polymerizing propylene in the presence of a catalyst system composed of:
- (A) a solid titanium trichloride-based complex which is a fine particulate solid obtained by reducing titanium tetrachloride with an organic aluminum compound and treating the reduction product with a mixture of carbon tetrachloride and a complexing agent selected from the group consisting of ethers and thioethers, and which is expressed by the formula:
- TiCl.sub.3.(AlR.sub.p.sup.3 X.sub.3-p).sub.x.(C).sub.y,
- wherein R.sup.3 is a hydrocarbon group of 1-20 carbon atoms, X is a halogen atom, p is a value within the range of 0.ltoreq.p.ltoreq.2, C is an ether or a thioether, x is a value less than 0.15 and y is a value greater than 0.001;
- and
- (B) an organic aluminum cocatalyst of the formula:
- AlR.sub.n.sup.1 Cl.sub.3-n,
- wherein R.sup.1 is a n-propyl group or a n-hexyl group and n is a value of 1.95-2.10.
5 more elements
A process for polymerizing propylene, which comprises:
- polymerizing propylene in the presence of a catalyst system composed of
- (A) a solid titanium trichloride-based complex which is a fine particulate solid obtained by reducing titanium tetrachloride with an organic aluminum compound and treating the reduction product with a mixture of carbon tetrachloride and a complexing agent selected from the group consisting of ethers and thioethers, and which is expressed by the formula:
- TiCl.sub.3.(AlR.sub.p.sup.3 X.sub.3-p).sub.x.(C).sub.y,
- wherein R.sup.3 is a hydrocarbon group of 1-20 carbon atoms, X is a halogen atom, p is a value within the range of 0.ltoreq.p.ltoreq.2, C is an ether or a thioether, x is a value less than 0.15 and y is a value greater than 0.001;
- (B) an organic aluminum cocatalyst of the formula:
- AlR.sub.n.sup.1 Cl.sub.3-n,
- wherein R.sup.1 is an n-propyl group or a n-hexyl group and n is a value of 1.95-2.10;
- and
- (C) an electron donor compound.
6 more elements
Dependencies are inferred from the claim text.