Patent US4091082A successfully refreshed from Google Patents.
US4091082A
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Hydrocarbon soluble catalyst containing dinitrogen or dihydrogen transition metal complex
Assignee: Dow Chemical Co
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Filing: 1976-06-04
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Granted: 1978-05-23
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Expires: 1996-06-04
Abstract
Abstract Hydrocarbon-soluble compositions useful as the transition metal component in the Ziegler polymerization of α-olefins are provided by reacting molecular nitrogen or hydrogen with a transition metal compound such as titanium trichloride to form a dinitrogen or dihydrogen complex of the transition metal compound.
Inventors
- 👤 Donald Earl Gessell
- 👤 Kirby Lowery, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:52
CPC Classifications
C; C01; C01G; C01G43/00; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/22; B01J31/2282; B01J31/2291; B01J2531/00; B01J2531/40; B01J2531/46; B01J2531/48; B01J2531/60; B01J2531/66
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
A hydrocarbon soluble complex of transition metal comprising a transition metal of Groups 4b, 6b, 7b and 8 of Mendeleev's Periodic Table of Elements having a valence greater than two or divalent nickel, a number of halide anionic groups sufficient to satisfy the valence charge on the transition metal, and molecular nitrogen and/or molecular hydrogen bonded to the transition metal through a coordinate covalent bond.
Claim 2
Dependent Claim
65 words
A hydrocarbon soluble complex of transition metal comprising a transition metal of Groups 4b, 6b, 7b and 8 of Mendeleev's Periodic Table of Elements having a valence greater than two or divalent nickel, a number of halide anionic groups sufficient to satisfy the valence charge on the transition metal, and molecular nitrogen and/or molecular hydrogen bonded to the transition metal through a coordinate covalent bond.
Claim 3
Dependent Claim
31 words
The complex of claim 1 wherein the transition metal is titanium, chromium, zirconium, tungsten, manganese, molybdenum, ruthenium, rhodium, cobalt, nickel and platinum and the halide anionic group is chloride or bromide.
Claim 4
Dependent Claim
19 words
The hydrocarbon soluble complex of claim 2 wherein the transition metal is titanium and the anionic group is chloride.
Claim 5
Dependent Claim
19 words
The complex of claim 3 wherein the titanium is bonded only to molecular nitrogen through a coordinate covalent bond.
Claim 6
Dependent Claim
58 words
A method for preparing the hydrocarbon soluble complex of claim 1 which comprises contacting a compound of the transition metal of Groups 4b, 6b, 7b and 8 of Mendeleev's Periodic Table of Elements dispersed in an inert organic diluent with molecular nitrogen and/or molecular hydrogen whereby a dinitrogen or dihydrogen complex of the transition metal compound is formed.
Claim 7
Dependent Claim
45 words
The method of claim 5 which is carried out at temperature in the range from ambient to about 200° C and pressure in the range from about 40 psig to about 300 psig in the presence of an acyclic aliphatic hydrocarbon as the inert diluent.
Claim 8
Dependent Claim
11 words
A complex prepared in accordance with the method of claim 6.
References Cited (Backward Citations)
US1491588A
Cited
US3403197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |