US4542199A
Expired / Lapsed
US
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Process for the preparation of polyolefins
Assignee: Targor GmbH
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Filing: 1983-12-08
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Granted: 1985-09-17
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Expires: 2003-12-08
Abstract
Abstract The invention relates to a process for the preparation of polyolefins by polymerizing olefins of the formula CH2CHR in which R=H or C1-C10 alkyl, on their own or as a mixture, if appropriate together with C4-C12 alpha , omega -diolefins, in solvents, liquid monomers or the gas phase, at temperatures between -50 DEG and 200 DEG C., using a catalyst system composed of a soluble, halogen-containing transition metal compound of the general formula (cyclopentadienyl)2 Me R Hal in which R is cyclopentadienyl or a C1-C6 alkyl radical or a halogen, in particular chlorine, Me is a transition metal, in particular zirconium, and Hal is a halogen, in particular chlorine, and a compound, containing aluminum, of the aluminoxane type having the general formulae Al2OR4(Al(R)-O)n for a linear aluminoxane and/or (Al(R)-O)n+2 for a cyclic aluminoxane, in which n is a number from 4 to 20 and R is a methyl or ethyl radical, preferably a methyl radical.
Inventors
- 👤 Walter Kaminsky
- 👤 Heinrich Hahnsen
- 👤 Klaus Kulper
- 👤 Rudiger Woldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:34
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592; C08F4/65922; C08F4/65925; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
A process for the preparation of a polyolefin by polymerizing an olefin of the formula CH 2 CHR in which R=H or C 1 -C 10 alkyl, on its own or as a mixture, with other olefins or with C 4 -C 12 α,ω-diolefins, in solvents, liquid monomers or the gas phase, at temperatures between -50° and 200° C., using a soluble, halogen-containing transition metal compound and aluminoxanes, which comprises carrying out the polymerization in the presence of a catalyst system composed of the following components: (a) bis-(cyclopentadienyl)-zirconium dichloride or bis-(cyclopentadienyl-zirconium monomethyl monochloride, and (b) a compound, containing aluminum, of the aluminoxane type having the general formulae Al.sub.2 OR.sub.4 (Al(R)--O).sub.n for a linear aluminoxane and (Al(R)--O).sub.n+2 for a cyclic aluminoxane, in which n is a number from 4 to 20 and R is a methyl or ethyl radical.
Claim 2
Dependent Claim
138 words
A process for the preparation of a polyolefin by polymerizing an olefin of the formula CH 2 CHR in which R=H or C 1 -C 10 alkyl, on its own or as a mixture, with other olefins or with C 4 -C 12 α,ω-diolefins, in solvents, liquid monomers or the gas phase, at temperatures between -50° and 200° C., using a soluble, halogen-containing transition metal compound and aluminoxanes, which comprises carrying out the polymerization in the presence of a catalyst system composed of the following components: (a) bis-(cyclopentadienyl)-zirconium dichloride or bis-(cyclopentadienyl-zirconium monomethyl monochloride, and (b) a compound, containing aluminum, of the aluminoxane type having the general formulae Al.sub.2 OR.sub.4 (Al(R)--O).sub.n for a linear aluminoxane and (Al(R)--O).sub.n+2 for a cyclic aluminoxane, in which n is a number from 4 to 20 and R is a methyl or ethyl radical.
Claim 3
Dependent Claim
11 words
The process as claimed in claim 1, wherein (b) is methylaluminoxane.
Claim 4
Dependent Claim
26 words
The process as claimed in claim 1, wherein the polymerization of ethylene is carried out at transition metal concentrations from 10 -6 to 10 -8 mole/l.
Claim 5
Dependent Claim
21 words
The process as claimed in claim 1, wherein the polymerization is carried out with impure ethylene without increasing the catalyst concentration.
Claim 6
Dependent Claim
17 words
The process as claimed in claim 1, wherein the polymerization temperature is between 20° and 120° C.
Claim 7
Dependent Claim
13 words
The process as claimed in claim 1, wherein ethylene is copolymerized with propylene.
Claim 8
Dependent Claim
18 words
The process as claimed in claim 1, wherein the copolymerization of ethylene with other α-olefins is carried out.
Claim 9
Dependent Claim
128 words
A process for the preparation of a polyolefin by polymerizing at least one olefin of the formula CH 2 ═CHR 1 in which R 1 =H or C 1 to C 5 alkyl, in solvents, liquid monomers or the gas phase, at temperatures between -50° and 200° C., which comprises carrying out the polymerization in the presence of a catalyst system comprising: (a) bis-(cyclopentadienyl)-zirconium dichloride or bis-(cyclopentadienyl)-zirconium monomethyl monochloride and (b) a compound of the aluminoxane type having the general formula Al.sub.2 O(CH.sub.3).sub.4 (Al[CH.sub.3 ]--O).sub.n for a linear aluminoxane and (Al[CH.sub.3 ]--O).sub.n+2 for a cyclic aluminoxane, in which n is a number from 4 to 20; wherein the aluminoxane concentration is 10 -8 to 10 -1 mole/l and the Zr concentration is 10 -6 to 10 -8 mole/l.
Claim 10
Dependent Claim
128 words
A process for the preparation of a polyolefin by polymerizing at least one olefin of the formula CH 2 ═CHR 1 in which R 1 =H or C 1 to C 5 alkyl, in solvents, liquid monomers or the gas phase, at temperatures between -50° and 200° C., which comprises carrying out the polymerization in the presence of a catalyst system comprising: (a) bis-(cyclopentadienyl)-zirconium dichloride or bis-(cyclopentadienyl)-zirconium monomethyl monochloride and (b) a compound of the aluminoxane type having the general formula Al.sub.2 O(CH.sub.3).sub.4 (Al[CH.sub.3 ]--O).sub.n for a linear aluminoxane and (Al[CH.sub.3 ]--O).sub.n+2 for a cyclic aluminoxane, in which n is a number from 4 to 20; wherein the aluminoxane concentration is 10 -8 to 10 -1 mole/l and the Zr concentration is 10 -6 to 10 -8 mole/l.
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) | 1988-09-16 | 1989-03-18 | 1989-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-16 | 1993-03-18 | 1993-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-16 | 1997-03-18 | 1997-09-17 | $7700.00 | Window Closed / Lapsed |