Patent US2721759A successfully refreshed from Google Patents.
US4113649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the solubilizing of alkali metal salts with polyethyleneglycoldiethers and the utilization thereof
Assignee: Studiengesellschaft Kohle gGmbH
•
Filing: 1976-08-04
•
Granted: 1978-09-12
•
Expires: 1996-08-04
Abstract
Abstract Process of solubilizing alkali- and alkali-earth metal salts, characterized in that the salts are reacted in the presence of solvents if desired, with open-chain polyethyleneglycoldiethers of the general formula RO--[CH.sub.2 CH.sub.2 O].sub.n R' wherein n = 6 or more and R and R' are identical or different and represent alkyl, aryl or cycloalkyl groups respectively, the polyethyleneglycoldiethers having at least 7 oxygen atoms which are separated from one another each by two carbon atoms. The process can also be used to dissolve alkali metals.
Inventors
- 👤 Herbert Lehmkuhl
- 👤 Farroch Rabet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:33
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/10; C07C67/11; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208; C07C201/00; C07C201/06; C07C201/16; C07C253/00; C07C253/14; C07F; C07F1/00; C07F1/005; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
56 words
Process of solubilizing a material which is an alkali metal, an alkali metal salt or an alkaline earth metal salt, which comprises contacting the material with open-chain polyethyleneglycoldiether of the formula RO--[CH.sub.2 CH.sub.2 O].sub.n R' wherein n = 6 or more and R and R' are identical or different and each is alkyl, aryl or cycloalkyl.
Claim 2
Dependent Claim
56 words
Process of solubilizing a material which is an alkali metal, an alkali metal salt or an alkaline earth metal salt, which comprises contacting the material with open-chain polyethyleneglycoldiether of the formula RO--[CH.sub.2 CH.sub.2 O].sub.n R' wherein n = 6 or more and R and R' are identical or different and each is alkyl, aryl or cycloalkyl.
Claim 3
Dependent Claim
24 words
Process of claim 1, wherein said ether is contained in an organic solvent and increases the solubility of the material in the organic solvent.
Claim 4
Dependent Claim
24 words
Process of claim 1, wherein said ether is contained in an organic solvent and the conductivity in the solvent is increased by the material.
Claim 5
Dependent Claim
37 words
Process of claim 1, wherein the material is a salt and the ether containing the dissolved salt is contacted with a compound different from the salt for a substitution reaction between said dissolved salt and said compound.
Claim 6
Dependent Claim
11 words
Process of claim 1, wherein said material is an alkali metal.
Claim 7
Dependent Claim
42 words
Process of claim 1, wherein the material is dissolved in the ether at less than 60° C., and following dissolution of the material in the ether, the material is at least partially separated from the ether by heating to above 60° C.
Claim 8
Dependent Claim
11 words
Process of claim 5, wherein the heating is to 60°-250° C.
Claim 9
Dependent Claim
12 words
Process of claim 1, wherein the salt is an alkali metal salt.
Claim 10
Dependent Claim
13 words
Process of claim 1, wherein the salt is an alkaline earth metal salt.
Claim 11
Dependent Claim
11 words
Process of claim 1, wherein the salt is an organic salt.
Claim 12
Dependent Claim
13 words
Process of claim 1, wherein the salt is an organic alkali metal salt.
Claim 13
Dependent Claim
8 words
Process of claim 1, wherein n is 7-45.
Claim 14
Dependent Claim
10 words
Process of claim 1, wherein n is at least 7.
Claim 15
Dependent Claim
12 words
Process of claim 4, wherein said material is an alkali metal salt.
References Cited (Backward Citations)
US3684707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |