US4208304A
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Catalyst system for producing ethylene polymers
Assignee: Phillips Petroleum Co
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Filing: 1978-05-19
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Granted: 1980-06-17
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Expires: 1998-05-19
Abstract
Abstract A catalyst for producing ethylene polymers in which a first component composed of titanium, vanadium, halogen, and OR groups, wherein R is selected from among alkyl, cycloalkyl, aryl, acyl, and combinations thereof, is combined with an organometallic compound. A method for producing a catalyst system in which an organoaluminum compound component is contacted with a component composition produced by reacting a mixture of titanium and vanadium compounds with an organometallic compound to form a product mixture which is then contacted with titanium tetrachloride. A method for producing polymers of ethylene by contacting ethylene with a catalyst system produced as above under conditions suitable for polymerization.
Inventors
- 👤 Darryl R. Fahey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:17
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/68; C08F10/00; C08F10/02; C08F110/00; C08F110/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
139 words
A catalyst useful in conjunction with an organoaluminum compound for producing ethylene polymers, said catalyst comprising a composition of titanium, vanadium, and halogen groups prepared by sequentially treating a mixture of titanium and vanadium compounds with (1) an organometallic compound and (2) titanium tetrachloride wherein said titanium compound is described by the formula Ti(OR) n X 4-n in which R is selected from among alkyl, cycloalkyl, aryl, and acyl groups and combinations thereof; each group can contain from 1 to about 20 carbon atoms per molecule; n designates 1, 2, 3, or 4; and X is bromide, chloride, or iodide and the vanadium compound is VX 4 or VO(OR') m X 3-m in which R' is an alkyl group containing from 1 to about 20 carbon atoms, m is 0 to 3 and X is bromide, chloride or iodide.
Claim 2
Dependent Claim
139 words
A catalyst useful in conjunction with an organoaluminum compound for producing ethylene polymers, said catalyst comprising a composition of titanium, vanadium, and halogen groups prepared by sequentially treating a mixture of titanium and vanadium compounds with (1) an organometallic compound and (2) titanium tetrachloride wherein said titanium compound is described by the formula Ti(OR) n X 4-n in which R is selected from among alkyl, cycloalkyl, aryl, and acyl groups and combinations thereof; each group can contain from 1 to about 20 carbon atoms per molecule; n designates 1, 2, 3, or 4; and X is bromide, chloride, or iodide and the vanadium compound is VX 4 or VO(OR') m X 3-m in which R' is an alkyl group containing from 1 to about 20 carbon atoms, m is 0 to 3 and X is bromide, chloride or iodide.
Claim 3
Dependent Claim
9 words
A catalyst of claim 1 wherein m is 1-3.
Claim 4
Dependent Claim
25 words
A catalyst of claim 1 wherein the organometallic compound is an organoaluminum compound selected from among dialkylaluminum halides, alkylaluminum dihalides, alkylaluminum alkoxides, and mixtures thereof.
Claim 5
Dependent Claim
68 words
A catalyst of claim 1 wherein said titanium compound is chosen from among a titanium tetraacetate, titanium tetramethoxide, titanium tetraethoxide, titanium tetraeicosyloxide, titanium tetracyclohexyloxide, titanium tetrabenzyloxide, titanium trimethoxidebutoxide, titanium ethoxytrichloride, titanium dibutoxidedioctadecyloxide, titanium diisopropoxydibromide, titanium phenoxytrichloride, and titanium tri-o-xylenyloxychloride, and said vanadium compound is chosen from among vanadium tetrachloride, trimethyl vanadate, triethyl vanadate, tridodecyl vanadate, trieicosyl vanadate, diethoxy vanadium chloride, n-butoxy vanadium dibromide, vanadium oxytribromide and vanadium oxytrichloride.
Claim 6
Dependent Claim
34 words
A catalyst of claim 3 wherein said organoaluminum compound is chosen from among dimethylaluminum bromide, diethylaluminum chloride, dioctylaluminum iodide, dieicosylaluminum chloride, ethylaluminum dichloride, dodecylaluminum dibromide, dioctadecylaluminum iodide, ethylaluminum sesquichloride isobutylaluminum sesquibromide, and diethylaluminum ethoxide.
Claim 7
Dependent Claim
103 words
A catalyst system useful for producing ethylene polymers comprising as component A a catalyst of claim 1 and as component B an organoaluminum compound having the formula AlR" a X' 3-a wherein R" is hydrogen or an alkyl or aryl group containing from 1 to about 20 carbon atoms, X' is bromine, chlorine, or iodine or an alkoxy group containing from 1 to about 12 carbon atoms, a is an integer of from 1 to 3, and when X' is alkoxy, a is 2 with the molar ratio of component B to component A in a range from about 1:1 to about 1500:1.
Claim 8
Dependent Claim
37 words
A catalyst system of claim 6 wherein said organoaluminum compound of component B is chosen from among trimethylaluminum, triethylaluminum, tridodecylaluminum, trieicosylaluminum, triphenylaluminum, diiethylaluminum chloride, dibutylaluminum bromide, methylaluminum dichloride, isopropylaluminum dibromide, dimethylaluminum ethoxide, didodecylaluminum dodecyloxide, and ethylaluminum sesquichloride.
Claim 9
Independent Claim
206 words
A method for producing a catalyst useful in conjunction with an organoaluminum compound for producing ethylene polymers, said method comprising: (1) reacting a mixture of a compound of titanium having the formula Ti(OR) n X 4-n in which R is selected from among alkyl, cycloalkyl, aryl, and acyl groups and combinations thereof; each group can contain from 1 to about 20 carbon atoms per molecule, n designates 1, 2, 3, or 4; and X is bromide, chloride or iodide and a compound of vanadium having the formula VX 4 or VO(OR') m X 3-m in which R' is an alkyl group containing from 1 to about 20 carbon atoms, m is 0 to 3 and X is bromide, chloride or iodide with an organoaluminum compound having the formula AlR" a X 3-a wherein R" is hydrogen or an alkyl or aryl group containing from 1 to about 20 carbon atoms, X' is bromine, chlorine, or iodine or an alkoxy group containing from 1 to about 12 carbon atoms, a is an integer of from 1 to 3, and when X' is alkoxy, a is 2 thereby forming a first product and (2) contacting said first product with a titanium tetrachloride to produce a second reaction product.
Claim 10
Independent Claim
206 words
A method for producing a catalyst useful in conjunction with an organoaluminum compound for producing ethylene polymers, said method comprising: (1) reacting a mixture of a compound of titanium having the formula Ti(OR) n X 4-n in which R is selected from among alkyl, cycloalkyl, aryl, and acyl groups and combinations thereof; each group can contain from 1 to about 20 carbon atoms per molecule, n designates 1, 2, 3, or 4; and X is bromide, chloride or iodide and a compound of vanadium having the formula VX 4 or VO(OR') m X 3-m in which R' is an alkyl group containing from 1 to about 20 carbon atoms, m is 0 to 3 and X is bromide, chloride or iodide with an organoaluminum compound having the formula AlR" a X 3-a wherein R" is hydrogen or an alkyl or aryl group containing from 1 to about 20 carbon atoms, X' is bromine, chlorine, or iodine or an alkoxy group containing from 1 to about 12 carbon atoms, a is an integer of from 1 to 3, and when X' is alkoxy, a is 2 thereby forming a first product and (2) contacting said first product with a titanium tetrachloride to produce a second reaction product.
Claim 11
Dependent Claim
20 words
A method of claim 8 wherein said titanium and vanadium compounds are mixed prior to contact with said organoaluminum compound.
Claim 12
Dependent Claim
15 words
A method of claim 9 wherein a hydrocarbon diluent is admixed with said titanium-vanadium compounds.
Claim 13
Dependent Claim
18 words
A method of claim 8 wherein said product mixture is aged before being reduced with said organoaluminum compound.
Claim 14
Dependent Claim
13 words
A method of claim 8 wherein titanium tetrachloride is added to the product.
Claim 15
Dependent Claim
13 words
A method of claim 8 wherein said product is added to titanium tetrachloride.
Claim 16
Dependent Claim
27 words
A method for producing ethylene polymers comprising contacting ethylene under conditions suitable for polymerization with a catalyst comprising the catalyst of claim 1 and an organoaluminum compound.
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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |