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US3933879A
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Chelated lithium aluminum compounds
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1973-03-23
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Granted: 1976-01-20
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Expires: 1993-03-23
Abstract
Abstract Chelated lithium aluminum compounds are prepared by mixing a lithium aluminum compound such as a lithium aluminum hydride with a chelating agent wherein the agent contains at least one nitrogen atom. The chelating agent is a tertiary polyamine or aminoether. The resultant chelate is used for a variety of processes such as separations, catalytic reactions, substitution reactions, reductions, electrochemical reactions, and also as an oil and fuel additive.
Inventors
- 👤 Arthur W. Langer, Jr.
- 👤 Thomas A. Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F1/00; C07F1/005; C07F9/28; C07F9/50; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C10L1/301; C10M; C10M1/00; C10M1/08; C10M3/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/044; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/066; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/222; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/049; C10M2223/06; C10M2223/061; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
37 words
A complex comprising: (a) a lithium hydrido aluminate having a lattice energy less than 210 kilocalories per mole at 18°C and (b) a monomeric or polymeric polyfunctional chelating tertiary hydrocarbyl amine containing at least 2 nitrogen atoms.
Claim 2
Dependent Claim
37 words
A complex comprising: (a) a lithium hydrido aluminate having a lattice energy less than 210 kilocalories per mole at 18°C and (b) a monomeric or polymeric polyfunctional chelating tertiary hydrocarbyl amine containing at least 2 nitrogen atoms.
Claim 3
Dependent Claim
186 words
A complex according to claim 1 wherein the amines are chelating polyfunctional Lewis bases, said bases being ones selected from the group consisting of tris-(2-C 1 -C 4 dialkylaminoethyl)-amine and those compounds having the formulas: ##SPC2## wherein c is an integer of 0 to 10,000 inclusive: Y is one selected from the group consisting of N and O; a is an integer equal to 0 or 1 depending on whether Y is N or O; R is the same of different C 1 -C 4 alkyl radical; R' is the same or different C 1 -C 4 alkyl radical or C 6 -C 10 aryl or aralkyl radical; and Z is a nonreactive radical selected from the group consisting of: 1. C 4 -C 10 cycloaliphatic or aromatic radicals and their lower alkyl derivatives wherein said radicals are attached to the N atoms in Formula I at 1,2 positions on the aromatic rings or 1,2 or 1,3 positions on the cycloaliphatic rings; and 2. 1 to 4 methylenic radicals, wherein each methylenic radical contains 0 to 2 monovalent hydrocarbon radicals of 1 to 6 carbon atoms.
Claim 4
Dependent Claim
15 words
A complex according to claim 1 which is pentamethyldiethylenetriamine•LiAlH 3 OC 2 H 5 .
Claim 5
Dependent Claim
12 words
A complex according to claim 1 which is tris-(B-di-methylaminoethyl)amine• LiAlH 4 .
Claim 6
Dependent Claim
17 words
A complex according to claim 1 which is pentamethyldiethylenetriamine•LiAlH[N(C 2 H 5 ) 2 ] 3 .
Claim 7
Dependent Claim
15 words
A complex according to claim 1 which is pentamethyldiethylenetriamine•LiAlCl(C 2 H 5 ) 3 .
Claim 8
Dependent Claim
21 words
A complex according to claim 1 which is pentamethyldiethylenetriamine•LiAlH 2 N(C 2 H 5 ) 2 SC 6 H 5 .
Claim 9
Dependent Claim
12 words
A complex according to claim 1 which is a trans-tetramethylcyclohexanediamine•LiAlH 4 .
References Cited (Backward Citations)
US3200106A
Cited
US3734963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |