Patent US3302161A successfully refreshed from Google Patents.
Patent US3917575A successfully refreshed from Google Patents.
US3917575A
Expired / Lapsed
US
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Process for production of polyolefins
Assignee: Eneos Corp
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Filing: 1973-11-07
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Granted: 1975-11-04
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Expires: 1993-11-07
Abstract
Abstract For polymerization or copolymerization of olefins there is used a composite catalyst comprising an organoaluminum compound and the reaction product of an organomagnesium compound and a titanium compound. The reaction between the organomagnesium and titanium compounds is conducted in the presence of an ether compound, with the molar ratio of titanium to magnesium not less than about 3 to 1. These organomagnesium, titanium and ether compounds are selectable from wide ranges of substances specified herein.
Inventors
- 👤 Kazuo Matsuura
- 👤 Nobuyuki Kuroda
- 👤 Mitsuji Miyoshi
- 👤 Masaomi Matsuzaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:17
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
A PROCESS FOR THE PRODUCTION OF POLYOLEFINS WHICH COMPRISES POLYMERIZING OR COPOLYMERIZING OLEFINS IN THE PRESENCE OF A COMPOSITE CATALYST CONSISTING ESSENTIALLY OF: A PRODUCT OF REACTION BETWEEN AN ETHER SOLUTION OF AN ORGANOMAGENISIUM COMPOUND AND A TITANIUM COMPOUND, SAID ETHER BEING THE SOLE SOLVENT IN THE REACTION SYSTEM, AT A TEMPERATURE OF AT LEAST ABOUT 100*C, WITH THE MOLAR RATIO OF TITANIUM TO MAGNESIUM AT LEAST ABOUT 3 TO 1, SAID TITANIUM COMPOUND BEING DEFINED BY THE GENERAL FORMULA, TI(OR)NX4-N, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ALLY, ARYL AND ARALKYL GROUPS, WHEREIN X IS A HALOGEN, AND WHEREIN N IS A WHOLE NUMBER OF FROM O TO 4 INCLUSIVE8 AND AN ORGAOALUMINUM COMPOUND.
Claim 2
Dependent Claim
118 words
A PROCESS FOR THE PRODUCTION OF POLYOLEFINS WHICH COMPRISES POLYMERIZING OR COPOLYMERIZING OLEFINS IN THE PRESENCE OF A COMPOSITE CATALYST CONSISTING ESSENTIALLY OF: A PRODUCT OF REACTION BETWEEN AN ETHER SOLUTION OF AN ORGANOMAGENISIUM COMPOUND AND A TITANIUM COMPOUND, SAID ETHER BEING THE SOLE SOLVENT IN THE REACTION SYSTEM, AT A TEMPERATURE OF AT LEAST ABOUT 100*C, WITH THE MOLAR RATIO OF TITANIUM TO MAGNESIUM AT LEAST ABOUT 3 TO 1, SAID TITANIUM COMPOUND BEING DEFINED BY THE GENERAL FORMULA, TI(OR)NX4-N, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ALLY, ARYL AND ARALKYL GROUPS, WHEREIN X IS A HALOGEN, AND WHEREIN N IS A WHOLE NUMBER OF FROM O TO 4 INCLUSIVE8 AND AN ORGAOALUMINUM COMPOUND.
Claim 3
Dependent Claim
57 words
A process as defined in claim 1, wherein said organomagnesium compound is selected from Grignard compounds which are defined by the general formula, R1MgX OR2R3, wherein X is a halogen, and wherein each of R1, R2 and R3 is selected from the class consisting of alkyl, allyl, aryl and aralkyl groups of 1 to 8 carbon atoms.
Claim 4
Dependent Claim
13 words
A process as defined in claim 2, wherein R2 and R3 are identical.
Claim 5
Dependent Claim
91 words
A process as defined in claim 3, wherein said Grignard compounds include the complex compounds formed by the union of an ether of 2 to 32 carbon atoms with one of the following methyl magnesium chloride, methyl magnesium bromide, methyl magnesium iodide, n-propyl magnesium chloride, n-propyl magnesium bromide, n-propyl magnesium iodide, n-butyl magnesium chloride, n-butyl magnesium bromide, n-butyl magnesium iodide, isobutyl magnesium chloride, isobutyl magnesuim bromide, isobutyl magnesium iodide, hexyl magnesium chloride, hexyl magnesium bromide, hexyl magnesium iodide, octyl magnesium chloride, octyl magnesium bromide, phenyl magnesium chloride, and phenyl magnesium bromide.
Claim 6
Dependent Claim
33 words
A process as defined in claim 4, wherein said ether is selected from the class consisting of dimethyl ether, diethyl ether, diisopropyl ether, dibutyl ether, methylethyl ether, diallyl ether, tetrahydrofuran, dioxane, and anisole.
Claim 7
Dependent Claim
17 words
A process as defined in claim 1, wherein said titanium compound is titanium tetrachloride or titanium tetraiodide.
Claim 8
Dependent Claim
67 words
A process as defined in claim 1, wherein said titanium compound is selected from the class consisting of titanium monomethyoxytrichloride, titanium dimethoxydichloride, titanium trimethyoxymonochloride, titanium tetramethoxide, titanium monoethyoxytribromide, titanium monoethyoxytrichloride, titanium diethoxydichloride, titanium triethoxymonochloride titanium tetraethoxide, titanium diethoxydibromide, titanium monobutoxytrichloride, titanium dibutoxydichloride, tIanium tributoxymonochloride, titanium tetrabutoxide, titanium dibutoxydibromide, titanium monoethoxymonobutoxydichloride, titanium diethyoxydibutoxide, titanium monopentoxytrichloride, titanium monophenoxytrichloride, titanium diphenoxydichloride, titanium triphenoxymonochloride, titanium tetraphenoxide, titanium diphenoxydibromide, and titanium monoethyoxymonophenoxydichloride.
Claim 9
Dependent Claim
38 words
A process as defined in claim 1, wherein said organoaluminum compound is selected from the class consisting of trimethyl aluminum, triethyl aluminum, triisobutyl aluuminum, trihexyl aluminum, diethyl aluminum monochloride, ethyl aluminum sesquichloride, and admixtures of the listed compounds.
Claim 10
Dependent Claim
39 words
A process as defined in claim 8, wherein said organoaluminum compound is used in amounts of from about 0.1 to 1,000 times greater in molar ratio than the product of reaction between the organomagnesium compound and the titanium compound.
Claim 11
Dependent Claim
52 words
A process as defined in claim 1, wherein said process is adaptable specifcally for the production of a copolymer of ethylene and another olefin selected from the class consisting of propylene and 1-butene, said other olefin being contained in said copolymer in an amount of not more than about 10 molar percent.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |