US4544648A
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Catalyst component for polymerization of olefins
Assignee: Tonen General Sekiyu KK
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Filing: 1984-05-29
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Granted: 1985-10-01
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Expires: 2004-05-29
Abstract
Abstract A catalyst component for the polymerization of olefins and particularly ethylene which is prepared by contacting a contact product of a magnesium alkoxide, a halogenated hydrocarbon, a halogenated silane with a titanium compound. The catalyst component in combination with a organoaluminum cocatalyst is useful for the polymerization of ethylene having a high melt index.
Inventors
- 👤 Takeshi Nomura
- 👤 Kouji Maruyama
- 👤 Hiroshi Ueno
- 👤 Naomi Inaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:36
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
A catalyst component for use in the polymerization of olefins which is obtained by contacting a magnesium compound represented by the formula Mg(OR)(OR'), a halogenated hydrocarbon selected from the group consisting of mono or polyhalogen substituted compounds of saturated or unsaturated aliphatic, alicyclic or aromatic hydrocarbons, a halogenated silane represented by the formula R" m SiX 4-m and a titanium compound, wherein R and R', which may be the same or different, are alkyl, alkenyl, cycloalkyl, aryl and aralkyl groups, R" is hydrogen or a hydrocarbon group containing from 1 to about 10 carbon atoms, X is a halogen atom and m is 0, 1, 2 or 3.
Claim 2
Dependent Claim
108 words
A catalyst component for use in the polymerization of olefins which is obtained by contacting a magnesium compound represented by the formula Mg(OR)(OR'), a halogenated hydrocarbon selected from the group consisting of mono or polyhalogen substituted compounds of saturated or unsaturated aliphatic, alicyclic or aromatic hydrocarbons, a halogenated silane represented by the formula R" m SiX 4-m and a titanium compound, wherein R and R', which may be the same or different, are alkyl, alkenyl, cycloalkyl, aryl and aralkyl groups, R" is hydrogen or a hydrocarbon group containing from 1 to about 10 carbon atoms, X is a halogen atom and m is 0, 1, 2 or 3.
Claim 3
Dependent Claim
21 words
The catalyst component of claim 1 wherein the magnesium compound is contacted sequentially with the halogenated hydrocarbon, silane and titanium compound.
Claim 4
Dependent Claim
28 words
The catalyst component of claim 2 wherein the contact product of contacting the magnesium compound, halogenated hydrocarbon and silane is washed prior to contact with the titanium compound.
Claim 5
Dependent Claim
23 words
The catalyst component of claim 2 wherein the magnesium compound is contacted with a magnesium halide prior to contact with the halogenated hydrocarbon.
Claim 6
Dependent Claim
56 words
The catalyst component of claim 1 wherein the titanium compound is represented by the formula Ti n (OR'") x (X') y wherein R'" is an alkyl or aryl group having from 1 to about 6 carbon atoms, X' is chloride or bromide, and n is 2, 3 or 4 and the sum of x+y is n.
Claim 7
Dependent Claim
147 words
A catalyst for the polymerization of olefins comprising (a) an organoaluminum compound represented by the formula R"" n AlX 3-n , wherein R"" is an alkyl or aryl group, X" is a halogen atom, alkoxy group or hydrogen atom, and is in the range of 1≦n≦3, and (b) a catalyst component obtained by contacting a magnesium compound represented by the formula Mg(OR)(OR'), a halogenated hydrocarbon selected from the group consisting of mono or polyhalogen substituted compounds of saturated or unsaturated aliphatic, alicyclic or aromatic hydrocarbons, a halogenated silane represented by the formula R" m SiX 4-m and a titanium compound, wherein R and R', which may be the same or different, are alkyl, alkenyl, cycloalkyl, aryl and aralkyl groups, R" is hydrogen or a hydrocarbon group containing from 1 to about 10 carbon atoms, X is a halogen atom and m is 0, 1, 2 or 3.
Claim 8
Dependent Claim
147 words
A catalyst for the polymerization of olefins comprising (a) an organoaluminum compound represented by the formula R"" n AlX 3-n , wherein R"" is an alkyl or aryl group, X" is a halogen atom, alkoxy group or hydrogen atom, and is in the range of 1≦n≦3, and (b) a catalyst component obtained by contacting a magnesium compound represented by the formula Mg(OR)(OR'), a halogenated hydrocarbon selected from the group consisting of mono or polyhalogen substituted compounds of saturated or unsaturated aliphatic, alicyclic or aromatic hydrocarbons, a halogenated silane represented by the formula R" m SiX 4-m and a titanium compound, wherein R and R', which may be the same or different, are alkyl, alkenyl, cycloalkyl, aryl and aralkyl groups, R" is hydrogen or a hydrocarbon group containing from 1 to about 10 carbon atoms, X is a halogen atom and m is 0, 1, 2 or 3.
Claim 9
Dependent Claim
20 words
The catalyst of claim 6 wherein the magnesium compound is contacted sequentially with the halogenated hydrocarbon, silane and titanium compound.
Claim 10
Dependent Claim
26 words
The catalyst of claim 7 wherein the contact product of the magnesium compound, halogenated hydrocarbon and silane is washed prior to contact with the titanium compound.
Claim 11
Dependent Claim
22 words
The catalyst of claim 7 wherein the magnesium compound is contacted with a magnesium halide prior to contact with the halogenated hydrocarbon.
Claim 12
Dependent Claim
55 words
The catalyst of claim 6 wherein the titanium compound is represented by the formula Ti n (OR'") x (X') y wherein R'" is an alkyl or aryl group having from 1 to about 6 carbon atoms, X' is chloride or bromide, and n is 2, 3 or 4 and the sum of x+y is n.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |