Patent US2763666A successfully refreshed from Google Patents.
US2763666A
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Method for the catalytic hydrogenation of furfural
Assignee: HUILLARD Ets SA
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Filing: 1952-02-07
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Granted: 1956-09-18
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Expires: 1972-02-07
Abstract
No abstract record available.
Inventors
- 👤 Mastagli Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:26
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/42; C07D307/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF PREPARING FURFURYL ALCHOL CLEAR OF TETRAHYDROFURFURYL ALCOHOL BY HYDROGENATING FURFURALDEHYDE, WHICH CONSISTS IN HEATING A POWDERED ALLOY CONSISTING MAINLY OF NICKLE AND ALUMINUM IN WHICH THE PERCENTAGE OF NICKEL RANGES FROM 25 TO 50% FOR AT LEAST SIXTY MINUTES AND AT A TEMPERATURE RANGING FROM 100 TO 120* C., IN AN AQUEOUS SOLUTION OF AN ALKALI, HEATING THE POWDER THUS OBTAINED FOR AT LEAST HALF AN HOUR IN RAW FURFURALDEHYDE TO PROVIDE A PRE-INHIBITED NICKEL POWDER, MIXING THE POWDER THUS TREATED WITH FURFURALDEHYDE IN A PROPORTION RANGING FROM 7 TO 11% BY WEIGHT OF NICKEL TO THE WEIGHT OF ALDEHYDE AND STIRRING THE MIXTURE FOR SEVERAL HOURS IN THE PRESENCE OF HYDROGEN UNDER A PRESSURE RANGING FROM 2 TO 20 KG./SQ. CM. AT A TEMPERATURE RANGING FROM 80 TO 130* C.
Claim 2
Independent Claim
134 words
A METHOD OF PREPARING FURFURYL ALCHOL CLEAR OF TETRAHYDROFURFURYL ALCOHOL BY HYDROGENATING FURFURALDEHYDE, WHICH CONSISTS IN HEATING A POWDERED ALLOY CONSISTING MAINLY OF NICKLE AND ALUMINUM IN WHICH THE PERCENTAGE OF NICKEL RANGES FROM 25 TO 50% FOR AT LEAST SIXTY MINUTES AND AT A TEMPERATURE RANGING FROM 100 TO 120* C., IN AN AQUEOUS SOLUTION OF AN ALKALI, HEATING THE POWDER THUS OBTAINED FOR AT LEAST HALF AN HOUR IN RAW FURFURALDEHYDE TO PROVIDE A PRE-INHIBITED NICKEL POWDER, MIXING THE POWDER THUS TREATED WITH FURFURALDEHYDE IN A PROPORTION RANGING FROM 7 TO 11% BY WEIGHT OF NICKEL TO THE WEIGHT OF ALDEHYDE AND STIRRING THE MIXTURE FOR SEVERAL HOURS IN THE PRESENCE OF HYDROGEN UNDER A PRESSURE RANGING FROM 2 TO 20 KG./SQ. CM. AT A TEMPERATURE RANGING FROM 80 TO 130* C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |