Patent US3028423A successfully refreshed from Google Patents.
US3028423A
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Reactions of alkali metal acetylides
Assignee: Airco Inc
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Filing: 1957-02-25
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Granted: 1962-04-03
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Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Jack H Blumenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:08
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/42; C07C51/00; C07C51/15; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A PROCESS FOR REACTING AT A TEMPERATURE BETWEEN THE FREEZING POINT OF THE REACTION MIXTURE AND ABOUT 80* C. AN ALKALI METAL ACETYLIDE WITH AN ORGANIC COMPOUND REACTIVE WITH THE ACETYLIDE TO FORM A DERIVATIVE RETAINING THE ACETYLENIC LINKAGE SELECTED FROM THE GROUP CONSISTING OF AN UNSUBSTITUTED HYDROCARBON CARBONYL COMPOUND, AN UNSUBSTITUTED ALKYLENE OXIDE, AN ALKYL HALIDE AND CARBON DIOXIDE, THE IMPROVEMENT OF CONDUCTING SAID REACTION IN AN INERT LIQUID LOWER ALKYL SULFOXIDE REACTION MEDIUM.
Claim 2
Dependent Claim
76 words
IN A PROCESS FOR REACTING AT A TEMPERATURE BETWEEN THE FREEZING POINT OF THE REACTION MIXTURE AND ABOUT 80* C. AN ALKALI METAL ACETYLIDE WITH AN ORGANIC COMPOUND REACTIVE WITH THE ACETYLIDE TO FORM A DERIVATIVE RETAINING THE ACETYLENIC LINKAGE SELECTED FROM THE GROUP CONSISTING OF AN UNSUBSTITUTED HYDROCARBON CARBONYL COMPOUND, AN UNSUBSTITUTED ALKYLENE OXIDE, AN ALKYL HALIDE AND CARBON DIOXIDE, THE IMPROVEMENT OF CONDUCTING SAID REACTION IN AN INERT LIQUID LOWER ALKYL SULFOXIDE REACTION MEDIUM.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |