Patent US2996552A successfully refreshed from Google Patents.
US2996552A
Expired / Lapsed
US
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Preparation of acetylenic alcohols
Assignee: Airco Inc
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Filing: 1958-10-28
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Granted: 1961-08-15
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Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jack H Blumenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:12
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A PROCESS FOR PREPARING AN ACETYLENIC ALCOHOL BY THE REACTION OF AN ORGANIC CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES WITH AN ACETYLENIC HYDROCARBON IN THE PRESENCE OF AN ALKALI METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES AND ALKALI METAL ALCOHOLATES OF TERTIARY ACETYLENIC ALCOHOLS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN A REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF ETHYLENEDIAMINE AND A LIQUID ORGANIC SULFOXIDE SELECTED FROM THE GROUP CONSISTING OF DIMETHYL SULFOXIDE, DIETHYL SULFOXIDE, METHYL ETHYL SULFOXIDE, AND TETRAMETHYLENE SULFOXIDE IN THE PRESENCE OF AN AMOUNT OF SAID ALKALI METAL COMPOUND SUBSTANTIALLY LESS THAN EQUIMOLECULAR WITH RESPECT TO THE AMOUNT OF SAID CARBONYL COMPOUND.
Claim 2
Dependent Claim
118 words
IN A PROCESS FOR PREPARING AN ACETYLENIC ALCOHOL BY THE REACTION OF AN ORGANIC CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES WITH AN ACETYLENIC HYDROCARBON IN THE PRESENCE OF AN ALKALI METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDES AND ALKALI METAL ALCOHOLATES OF TERTIARY ACETYLENIC ALCOHOLS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN A REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF ETHYLENEDIAMINE AND A LIQUID ORGANIC SULFOXIDE SELECTED FROM THE GROUP CONSISTING OF DIMETHYL SULFOXIDE, DIETHYL SULFOXIDE, METHYL ETHYL SULFOXIDE, AND TETRAMETHYLENE SULFOXIDE IN THE PRESENCE OF AN AMOUNT OF SAID ALKALI METAL COMPOUND SUBSTANTIALLY LESS THAN EQUIMOLECULAR WITH RESPECT TO THE AMOUNT OF SAID CARBONYL COMPOUND.
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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |