US4521627A
Expired / Lapsed
US
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Method of preparing alkali metal salts of organic diamines
Assignee: Union Camp Corp
•
Filing: 1984-02-06
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Granted: 1985-06-04
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Expires: 2004-02-06
Abstract
Abstract The disclosure is of a method of preparing alkaline metal salts of organic diamines. The method comprises, in brief, reacting the alkaline metal with a molar excess of the diamine in the presence of a catalytic proportion of a transition metal compound, at a temperature of from about 20° C. to reflux temperature for the reaction mixture.
Inventors
- 👤 Peter W. D. Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:02
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
49 words
A method of preparing alkali metal salts of organic diamines, which comprises; reacting said metal with a molar excess of said diamine in the presence of a catalytic proportion of a transition metal compound at a temperature of from about 20° C. to reflux temperature for the reaction mixture.
Claim 2
Independent Claim
49 words
A method of preparing alkali metal salts of organic diamines, which comprises; reacting said metal with a molar excess of said diamine in the presence of a catalytic proportion of a transition metal compound at a temperature of from about 20° C. to reflux temperature for the reaction mixture.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the alkali metal is sodium or potassium.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein the diamine is ethylenediamine or 1,3-diaminopropane.
Claim 5
Dependent Claim
28 words
The method of claim 2 wherein the transition metal in the catalytic compound is selected from the group consisting of manganese, iron, cobalt, nickel, copper, platinum and palladium.
Claim 6
Dependent Claim
17 words
The method of claim 2 wherein the transition metal compound is a compound of iron or palladium.
References Cited (Backward Citations)
US3234277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |