US2566136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing acetylenes from diolefin mixtures
Assignee: Standard Oil Development Co
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Filing: 1943-11-06
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Granted: 1951-08-28
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Expires: 1963-11-06
Abstract
No abstract record available.
Inventors
- 👤 Charles E Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:40
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN IMPROVED COPPER AMMONIUM ACETATE ABSORPTION AND PURIFICATION METHOD FOR SEPARATING BUTADIENE FROM A HYDROCARBON MIXTURE CONTAINING IT, TOGETHER WITH BUTENES AND SMALL AMOUNTS OF ACETYLENES, COMPRISING THE STEPS OF CONTACTING SAID MIXTURE WITH A SOLUTION CONTAINING BUTAACETATE TO OBTAIN A RICH SOLUTION CONTAINING BUTADIENE AND ACETYLENES, SUBSEQUENTLY HEATING SAID RICH SOLUTION TO DESORB BUTADIENE IS OBSOLUTION SUBSEQUENTLY FREE OF BUTADIENE IS OBTAINED, EXPOSING SAID LEAN SOLUTION TO CONDITIONS CAUSING POLYMERIZATION OF ACETYLENES, AND WASHING SAID EXPOSED SOLUTION WITH LIQUID BUTENE.
Claim 2
Dependent Claim
81 words
AN IMPROVED COPPER AMMONIUM ACETATE ABSORPTION AND PURIFICATION METHOD FOR SEPARATING BUTADIENE FROM A HYDROCARBON MIXTURE CONTAINING IT, TOGETHER WITH BUTENES AND SMALL AMOUNTS OF ACETYLENES, COMPRISING THE STEPS OF CONTACTING SAID MIXTURE WITH A SOLUTION CONTAINING BUTAACETATE TO OBTAIN A RICH SOLUTION CONTAINING BUTADIENE AND ACETYLENES, SUBSEQUENTLY HEATING SAID RICH SOLUTION TO DESORB BUTADIENE IS OBSOLUTION SUBSEQUENTLY FREE OF BUTADIENE IS OBTAINED, EXPOSING SAID LEAN SOLUTION TO CONDITIONS CAUSING POLYMERIZATION OF ACETYLENES, AND WASHING SAID EXPOSED SOLUTION WITH LIQUID BUTENE.
References Cited (Backward Citations)
US2318988A
Cited
US2463846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |