US4042636A
Expired / Lapsed
US
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Method for the preparation of alcohol-free alkali and alkaline earth metal alcoholates
Assignee: Dynamit Nobel AG
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Filing: 1975-11-12
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Granted: 1977-08-16
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Expires: 1995-11-12
Abstract
Abstract A process for the preparation of an alcohol-free alkali or alkaline earth metal alcoholates dissolved in inert solvent which comprises contacting at least an equimolar amount of an alkali or alkaline earth metal dissolved in an inert solvent with an alcohol at an elevated pressure and at a temperature of at least that at which crystal alcohol splits off from the corresponding alkali or alkaline earth metal alcoholate and below the temperature at which said alcoholate decomposes under the prevailing pressures.
Inventors
- 👤 Arnold Lenz
- 👤 Walter Rogler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:00
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70; C07C31/00; C07C31/28; C07C31/30; C12; C12C; C12C11/00; C12C11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A process for the preparation of an alcohol-free alkali or alkaline earth metal alcoholate in an inert hydrocarbonaceous solvent which comprises contacting at least an equimolar amount of an alkali radical or alkaline earth metal in an inert hydrocarbonaceous solvent, which solvent is inert to said alkali or alkaline earth metal, with a monovalent C 1 -C 24 alkanol at an elevated pressure in a closed vessel and at a temperature of at least that at which crystal alcohol split off from the corresponding alkali or alkaline earth metal alcoholate under normal pressure and below the temperature at which alkali or alkaline earth metal alcoholate decomposes under the prevailing pressure.
Claim 2
Dependent Claim
110 words
A process for the preparation of an alcohol-free alkali or alkaline earth metal alcoholate in an inert hydrocarbonaceous solvent which comprises contacting at least an equimolar amount of an alkali radical or alkaline earth metal in an inert hydrocarbonaceous solvent, which solvent is inert to said alkali or alkaline earth metal, with a monovalent C 1 -C 24 alkanol at an elevated pressure in a closed vessel and at a temperature of at least that at which crystal alcohol split off from the corresponding alkali or alkaline earth metal alcoholate under normal pressure and below the temperature at which alkali or alkaline earth metal alcoholate decomposes under the prevailing pressure.
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |