Patent US3030416A successfully refreshed from Google Patents.
US3030416A
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Beta-diketones and preparation thereof
Assignee: Unilever PLC
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Filing: 1958-08-28
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Granted: 1962-04-17
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Expires: 1978-08-28
Abstract
No abstract record available.
Inventors
- 👤 Mikusch-Buchberg Johannes Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:53
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/04; C07C49/12; C07C45/00; C07C45/45; C07C45/48; C07C49/20; C07C49/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR PREPARING BETA-DIKETONES OF THE FORMULA RCH2.CO.CHR1.CO.CH2R2, WHERE R, R1 AND R2 ARE NON-ACETYLENIC ACYCLIC HYDROCARBON RADICALS CONTAINING 1 TO 21 CARBON ATOMS, WHICH COMPRISES EFFECTING CONDENSATION OF A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF ACIDS OF THE FORMULA R.CH2COOH, WHERE R IS AS DEFINED ABOVE AND ANHYDRIDES OF SAID ACIDS AT TEMPERATURES WITHIN THE RANGE 150 TO 229*C. IN THE PRESENCE OF BORIC OXIDE, ANY WATER LIBERATED IN THE REACTION BEING REMOVED AS FORMED, TREATING THE REACTION MIXTURE SO FORMED WITH A HYDROLYSING AGENT AND SEPARATING THE BETA-DIKETONE FROM THE PRODUCTS OF HYDROLYSIS. 6. 19 - HEXADEC - 7'':8'' - ENYL - HEPTATRICONT - 9:1028:29-DIEN-18:20-DIONE.
Claim 2
Dependent Claim
109 words
A PROCESS FOR PREPARING BETA-DIKETONES OF THE FORMULA RCH2.CO.CHR1.CO.CH2R2, WHERE R, R1 AND R2 ARE NON-ACETYLENIC ACYCLIC HYDROCARBON RADICALS CONTAINING 1 TO 21 CARBON ATOMS, WHICH COMPRISES EFFECTING CONDENSATION OF A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF ACIDS OF THE FORMULA R.CH2COOH, WHERE R IS AS DEFINED ABOVE AND ANHYDRIDES OF SAID ACIDS AT TEMPERATURES WITHIN THE RANGE 150 TO 229*C. IN THE PRESENCE OF BORIC OXIDE, ANY WATER LIBERATED IN THE REACTION BEING REMOVED AS FORMED, TREATING THE REACTION MIXTURE SO FORMED WITH A HYDROLYSING AGENT AND SEPARATING THE BETA-DIKETONE FROM THE PRODUCTS OF HYDROLYSIS. 6. 19 - HEXADEC - 7'':8'' - ENYL - HEPTATRICONT - 9:1028:29-DIEN-18:20-DIONE.
References Cited (Backward Citations)
US2223932A
Cited
US2569132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |