US2580528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation
Assignee: Celanese Corp
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Filing: 1948-06-14
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Granted: 1952-01-01
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Expires: 1968-06-14
Abstract
No abstract record available.
Inventors
- 👤 Henry K Dice
- 👤 Jr Samuel B Jeffries
- 👤 Warren D Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:49
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A PROCESS FOR THE TREATMENT OF A MIXTURE COMPRISING ESSENTIALLY ACETONE, METHYL ETHYL KETONE, ACETALDEHYDE, ALCOHOLS, OXIDES, ACETALS, AND HIGHER COMPLEX ALDEHYDES, THE STEP WHICH COMPRISES SUBJECTING THE MIXTURE MAINTAINEED AT A PH OF 5.0 TO 7.0 AND AT A TEMPERATURE OF 150* TO 250* F. TO CATALYTIC HYDROGENATION WITH FREE HYDROGEN UNDER A PRESSURE OF 300 TO 2000 POUNDS PERSQUARE INCH EMPLOYING NICKEL AS THE HYDROGENATION CATALYST, SO AS TO CAUSE THE REDUCTION OF THE HIGHER ALDEHYDES AND A PART OF THE KETONES PRESENT TO HYDROXY COMPOUNDS AND SEPARATING THE HYDROGENATED MIXTURE OBTAINED INTO THE INDIVIDUAL COMPONENTS COMPRISING THE SAME.
Claim 2
Dependent Claim
102 words
IN A PROCESS FOR THE TREATMENT OF A MIXTURE COMPRISING ESSENTIALLY ACETONE, METHYL ETHYL KETONE, ACETALDEHYDE, ALCOHOLS, OXIDES, ACETALS, AND HIGHER COMPLEX ALDEHYDES, THE STEP WHICH COMPRISES SUBJECTING THE MIXTURE MAINTAINEED AT A PH OF 5.0 TO 7.0 AND AT A TEMPERATURE OF 150* TO 250* F. TO CATALYTIC HYDROGENATION WITH FREE HYDROGEN UNDER A PRESSURE OF 300 TO 2000 POUNDS PERSQUARE INCH EMPLOYING NICKEL AS THE HYDROGENATION CATALYST, SO AS TO CAUSE THE REDUCTION OF THE HIGHER ALDEHYDES AND A PART OF THE KETONES PRESENT TO HYDROXY COMPOUNDS AND SEPARATING THE HYDROGENATED MIXTURE OBTAINED INTO THE INDIVIDUAL COMPONENTS COMPRISING THE SAME.
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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |