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EP0299712A2
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Catalyst for olefin polymerization
Assignee: Mitsubishi Chemical Corp
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Filing: 1988-07-12
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Granted: —
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Expires: 2008-07-12
Abstract
Abstract A catalyst for olefin polymerization which comprises: Component (A) which is a solid catalyst component obtained by contacting the following components (i) to (iv): (i) a solid component comprising titanium, magnesium and halogen as essential elements, (ii) a silicon compound represented by the formula (I): R¹ m X n Si(OR²) 4-m-n (1) wherein R¹ and R² each represent a hydrocarbon residue, X represents a halogen, and each of m and n is an integer in the range of 0≦m≦3 and 0≦n≦3, and 0≦m+n≦3, (iii) a titanium compound or a silicon compound represented by the formula (II) or (III): Ti(OR³) 4-ℓ X ℓ (II) R⁴ 4-ℓ SiX ℓ (III) wherein R³ represents a hydrocarbon residue, R⁴ represents hydrogen or a hydrocarbon residue, X represents a halogen, and ℓ is an integer in the range of 0<ℓ≦4, and (iv) an organoaluminum compound; and Component (B) which is an organoaluminum compound.
Inventors
- 👤 Mitsuyuki c/o Mitsubishi Petrochem.Co. Matsuura
- 👤 Takashi c/o Mitsubishi Petrochem.Co. Fujita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 11:47
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
146 words
A catalyst for olefin polymerization which comprises: Component (A) which is a solid catalyst component obtained by contacting the following components (i) to (iv): (i) a solid component comprising titanium, magnesium and halogen as essential elements, (ii) a silicon compound represented by the formula (I): R¹ m X n Si(OR²) 4-m-n (I) wherein R¹ and R² each represent a hydrocarbon residue, X represents a halogen, and each of m and n is an integer in the range of 0≦m≦3, 0≦n≦3, and 0≦m+n≦3, (iii) a titanium compound of silicon compound represented by the formula (II) or (III): Ti(OR³) 4-ℓ X ℓ (II) R⁴ 4-ℓ SiX ℓ (III) wherein R³ represents a hydrocarbon residue, R⁴ represents hydrogen or a hydrocarbon residue, X represents a halogen, and ℓ is an integer in the range of 0<ℓ≦4, and (iv) an organoaluminum compound; and Component (B) which is an organoaluminum compound.
Claim 2
Dependent Claim
146 words
A catalyst for olefin polymerization which comprises: Component (A) which is a solid catalyst component obtained by contacting the following components (i) to (iv): (i) a solid component comprising titanium, magnesium and halogen as essential elements, (ii) a silicon compound represented by the formula (I): R¹ m X n Si(OR²) 4-m-n (I) wherein R¹ and R² each represent a hydrocarbon residue, X represents a halogen, and each of m and n is an integer in the range of 0≦m≦3, 0≦n≦3, and 0≦m+n≦3, (iii) a titanium compound of silicon compound represented by the formula (II) or (III): Ti(OR³) 4-ℓ X ℓ (II) R⁴ 4-ℓ SiX ℓ (III) wherein R³ represents a hydrocarbon residue, R⁴ represents hydrogen or a hydrocarbon residue, X represents a halogen, and ℓ is an integer in the range of 0<ℓ≦4, and (iv) an organoaluminum compound; and Component (B) which is an organoaluminum compound.
Claim 3
Dependent Claim
21 words
The catalyst according to claim 1, wherein the magnesium contained in the solid component (i) is supplied from a magnesium halide.
Claim 4
Dependent Claim
27 words
The catalyst according to any one or the preceding claims, wherein the titanium contained in the solid component (i) is supplied from TiCl₄, Ti(OEt)₄, Ti(OBu)₄ or Ti(OBu)Cl₃.
Claim 5
Dependent Claim
22 words
The catalyst according to any one of the preceding claims, wherein the solid component (i) is prepared using an electron donor compound.
Claim 6
Dependent Claim
21 words
The catalyst according to claim 4, wherein the electron donor compound is an ester of an organic acid or acid halide.
Claim 7
Dependent Claim
37 words
The catalyst according to any one of the preceding claims, wherein the solid component (i) is one which has undergone a preliminary polymerization in which an olefin is polymerized thereover in the presence of an organoaluminum compound.
Claim 8
Dependent Claim
40 words
The catalyst according to any one of the preceding claims, wherein R¹ in the formula (I) is a branched hydrocarbon residue with 4 to 10 carbon atoms in which the carbon atom at the α-position is a tertiary carbon atom.
Claim 9
Dependent Claim
41 words
The catalyst according to any one of the preceding claims, wherein the titanium compound of the formula (II) is selected from the group consisting of TiCl₄, TiBr₄, Ti(OC₂H₅)Cl₃, Ti(OC₂H₅)₂Cl₂, Ti(OC₂H₅)₃Cl, Ti(O-iC₃H₇)Cl₃, Ti(O-nC₄H₉)Cl₃, Ti(O-nC₄H₉)₂Cl₂, Ti(OC₂H₅)Br₃, Ti(OC₂H₅)(OC₄H₉)₂Cl, Ti(O-nC₄H₉)₃Cl, Ti(O-C₆H₅)Cl₃, Ti(O-iC₄H₉)₂Cl₂, Ti(OC₅H₁₁)Cl₃, and Ti(OC₆H₁₃)Cl₃.
Claim 10
Dependent Claim
15 words
The catalyst according to claim 8, wherein the titanium compound is TiCl₄, Ti(OC₂H₅)Cl₃ or Ti(OC₄H₉)Cl₃.
Claim 11
Dependent Claim
58 words
The catalyst according to any one of the preceding claims, wherein the silicon compound of the formula (III) is selected from the group consisting of SiCl₄, CH₃SiCl₃, HSiCl₃, CH₃HSiCl₂, CH₂=CHSiCl₃, CH₃CHClSiCl₃, C₂H₅SiCl₃, (CH₃)₂SiCl₂, HSi(CH₃)₂Cl, C₃H₇SiCl₃, CH₃(C₂H₅)SiCl₂, SiBr₄, (CH₃)₃SiCl, CH₃(CH₂)₃SiCl₃, (C₂H₅)₂SiCl₂, CH₃(CH₂)₄SiCl₃, CH₃(CH₂)₃(CH₃)SiCl₂, (C₆H₅)SiCl₃, (C₆H₅)HSiCl₂, (cycloC₆H₁₁)SiCl₃, (CH₂=CHCH)₂SiCl₂, CH₃(CH₂)₅SiCl₃, C₆H₅CH₂SiCl₃, (C₆H₅)(CH₃)SiCl₂, CH₃(CH₂)₆SiCl₃, CH₃(CH₂)₅(CH₃)SiCl₂, (CH₃)(CH₂)₇SiCl₃, CH₃(CH₂)₆(CH₃)SiCl₂, (CH₃CH₂CH₂)₃SiCl, CH₃(CH₂)₉SiCl₃, CH₃(CH₂)₉(CH₃)SiCl₂, and (C₆H₅)₂SiCl₂.
Claim 12
Dependent Claim
15 words
The catalyst according to claim 10, wherein the silicon compound is SiCl₄, (CH₃)SiCl₃ or (C₂H₅)SiCl₃.
Claim 13
Dependent Claim
37 words
The catalyst according to any one of the preceding claims, wherein the organoaluminum compound of the component (iv) is selected from the group consisting of Al(C₂H₅)₃, Al(iC₄H₉)₃, Al(nC₄H₉)₃, Al(C₅H₁₃)₃, Al(C₈H₁₇)₃, Al(C₁₀H₂₁)₃, Al(C₂H₅)Cl, Al(iC₄H₉)₂Cl, Al(C₂H₅)₂H, Al(iC₄H₉)₂H and Al(C₂H₅)₂(OC₂H₅).
Claim 14
Dependent Claim
40 words
The catalyst according to any one of the preceding claims, wherein the amount of the component (ii) is such that the atomic ratio of silicon of the component (ii) to titanium of the component (i) is from 0.01 to 1,000.
Claim 15
Dependent Claim
42 words
The catalyst according to any one of the preceding claims, wherein the amount of the component (iii) is such that the atomic ratio of titanium or silicon of the component (iii) to titanium of the component (i) is from 0.01 to 100.
Claim 16
Dependent Claim
40 words
The catalyst according to any one of the preceding claims, wherein the amount of the component (iv) is such that the atomic ratio of aluminum of the component (iv) to titanium of the component (i) is from 0.01 to 100.
Claim 17
Dependent Claim
28 words
The catalyst according to any one of the preceding claims, wherein the amount of the Component (B) to that of the Component (A) is from 0.1 to 1,000.
References Cited (Backward Citations)
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