US2650253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of higher ketones
Assignee: Shell Development Co
•
Filing: 1951-04-27
•
Granted: 1953-08-25
•
Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Rust
- 👤 William E Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:25
CPC Classifications
C; C07; C07C; C07C45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
PROCESS OF PREPARING A DIALKYL KETONE FROM AN OLEFIN AND AN ALDEHYDE, SAID KETONE CONTAINING CARBON ATOMS EQUAL IN NUMBER TO THE SUM OF THE NUMBER OF CARBON ATOMS IN ONE MOLECULE OF EACH OF SAID REACTANTS, WHICH PROCESS COMPRISES HEATING TOGETHER, IN THE PRESENCE OF A FREE RADICAL REACTION INITIATOR OF THE CLASS CONSISTING OF POSITIVE HALOGEN COMPOUNDS AND PEROXIDIC COMPOUNDS, AN ALPHA-MONOOLEFIN HYDROCARBON OF THE FORMULA R-CH=CH2, WHEREIN R IS AN ALKYL GROUP HAVING NOT LESS THAN FOUR CARBON ATOMS, AND AN ALKANAL CONTAINING NOT LESS THAN TWO CARBON ATOMS, SAID REACTANTS BEING PRESENT IN THE REACTION THEATRE IN THE PROPORTION OF FROM ABOUT 20 MOLES OF OLEFIN PER MOLE OF ALKANAL TO ABOUT 1 MOLE OF OLEFIN PER 20 MOLES OF ALKANAL, AND ISOLATING SAID DIALKYL KETONE.
Claim 2
Dependent Claim
130 words
PROCESS OF PREPARING A DIALKYL KETONE FROM AN OLEFIN AND AN ALDEHYDE, SAID KETONE CONTAINING CARBON ATOMS EQUAL IN NUMBER TO THE SUM OF THE NUMBER OF CARBON ATOMS IN ONE MOLECULE OF EACH OF SAID REACTANTS, WHICH PROCESS COMPRISES HEATING TOGETHER, IN THE PRESENCE OF A FREE RADICAL REACTION INITIATOR OF THE CLASS CONSISTING OF POSITIVE HALOGEN COMPOUNDS AND PEROXIDIC COMPOUNDS, AN ALPHA-MONOOLEFIN HYDROCARBON OF THE FORMULA R-CH=CH2, WHEREIN R IS AN ALKYL GROUP HAVING NOT LESS THAN FOUR CARBON ATOMS, AND AN ALKANAL CONTAINING NOT LESS THAN TWO CARBON ATOMS, SAID REACTANTS BEING PRESENT IN THE REACTION THEATRE IN THE PROPORTION OF FROM ABOUT 20 MOLES OF OLEFIN PER MOLE OF ALKANAL TO ABOUT 1 MOLE OF OLEFIN PER 20 MOLES OF ALKANAL, AND ISOLATING SAID DIALKYL KETONE.
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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |