Patent US4067822A successfully refreshed from Google Patents.
US4067822A
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High efficiency complex catalyst for polymerizing olefins
Assignee: Dow Chemical Co
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Filing: 1976-06-23
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Granted: 1978-01-10
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Expires: 1996-06-23
Abstract
Abstract Compositions exhibiting high catalytic activity in the polymerization of alpha -olefins are provided by mixing a dinitrogen and/or dihydrogen complex of a transition metal such as titanium with a conventional Ziegler catalyst such as the reaction product of titanium tetrachloride and aluminum triethyl. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics.
Inventors
- 👤 Donald Earl Gessell
- 👤 Gaylon Le Roy Dighton
- 👤 Luis Daniel Valenzuela-Bernal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:33
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A catalytic mixture of (A) a hydrocarbon soluble complex of a halide of a transition metal (TM1) wherein the complex contains at least one coordinate covalent bond to molecular nitrogen or hydrogen and (B) a conventional Ziegler catalyst comprising a transition metal (TM2) compound selected from the group consisting of halides, oxyhalides, oxides, hydroxides, alcoholates, acetates, benzoates and acetylacetonates; and a non-transition metal (M) or a compound of a non-transition metal (M) as a reducing agent, the proportions of the foregoing components of said catalytic mixture being such that the atomic ratio of the transition metal (TM1) of the complex to the transition metal (TM2) of the Ziegler catalyst is within the range from about 0.001:1 to about 1000:1, and the atomic ratio of the metal (M) of the reducing agent to the transition metal of the complex is within the range from about 0.1:1 to about 100:1 and wherein (TM1) and (TM2) are independently selected from groups 4b, 6b, 7b or 8 of Mendeleev's Periodic Table of Elements and (M) is selected from groups 1a, 2a, 2b or 3a of said table.
Claim 2
Dependent Claim
183 words
A catalytic mixture of (A) a hydrocarbon soluble complex of a halide of a transition metal (TM1) wherein the complex contains at least one coordinate covalent bond to molecular nitrogen or hydrogen and (B) a conventional Ziegler catalyst comprising a transition metal (TM2) compound selected from the group consisting of halides, oxyhalides, oxides, hydroxides, alcoholates, acetates, benzoates and acetylacetonates; and a non-transition metal (M) or a compound of a non-transition metal (M) as a reducing agent, the proportions of the foregoing components of said catalytic mixture being such that the atomic ratio of the transition metal (TM1) of the complex to the transition metal (TM2) of the Ziegler catalyst is within the range from about 0.001:1 to about 1000:1, and the atomic ratio of the metal (M) of the reducing agent to the transition metal of the complex is within the range from about 0.1:1 to about 100:1 and wherein (TM1) and (TM2) are independently selected from groups 4b, 6b, 7b or 8 of Mendeleev's Periodic Table of Elements and (M) is selected from groups 1a, 2a, 2b or 3a of said table.
Claim 3
Dependent Claim
50 words
The catalytic mixture of claim 2 wherein TM1 and TM2 are titanium and the metallic reducing agent is an organoaluminum compound having the formula RAlYY' wherein R is alkyl, Y is alkyl or hydrogen and Y' is alkyl, hydrogen or halogen provided that when Y' is halogen Y is alkyl.
Claim 4
Dependent Claim
51 words
The catalyst of claim 1 wherein (TM1) and (TM2) are independently selected from the group consisting of titanium, chromium, zirconium, tungsten, manganese, molybdenum, ruthenium, rhodium, cobalt, nickel and platinum and the reducing compound is a metal or compound of the metal selected from the group consisting of aluminum, sodium and lithium.
Claim 5
Dependent Claim
89 words
The catalyst of claim 4 wherein the transition metal compounds (TM1) are selected from the group consisting of titanium trichloride, zirconium tetrachloride, tungsten hexachloride, molybdenum pentachloride and nickel dichloride; the transition metal compounds (TM2) are selected from titanium trichloride, titanium tetrachloride, tetra(isopropoxy) titanium, tri(isopropoxy)titanium, dibutoxy titanium dichloride and tetraphenoxy titanium and the reducing metal compound is selected from the group consisting of lithium hydride, sodium borohydride trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-butylaluminum, tri-n-pentylaluminum, triisooctylaluminum, tri-n-decylaluminum, tri-n-dodecylaluminum, diethylaluminum chloride, diethylaluminum hydride, butyllithium, amylsodium, phenylsodium, dimethylmagnesium, diethylmagnesium, diethylzinc, butylmagnesium chloride and phenylmagnesium bromide.
Claim 6
Dependent Claim
23 words
The catalytic mixture of claim 5 wherein the atomic ratio of TM1 to TM2 is in the range from about 0.001:1 to 0.101.
Claim 7
Dependent Claim
23 words
The catalytic mixture of claim 3 wherein the atomic ratio of TM1 to TM2 is in the range from about 0.01:1 to 0.05:1.
Claim 8
Dependent Claim
15 words
The mixture of claim 7 wherein the complex contains a coordinate covalent bond to nitrogen.
Claim 9
Dependent Claim
17 words
The mixture of claim 8 wherein the transition metal halide of the complex is a titanium trichloride.
Claim 10
Dependent Claim
15 words
The mixture of claim 9 wherein the titanium trichloride is a titanium trichloride-aluminum chloride complex.
Claim 11
Dependent Claim
33 words
The mixture of claim 10 wherein the Ziegler catalyst is the reaction product of a titanium trichloride aluminum chloride complex and an aluminum trialkyl wherein alkyl has from 1 to 12 carbon atoms.
Claim 12
Dependent Claim
9 words
The mixture of claim 1 wherein TM1 is zirconium.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |