US3282973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of carboxylic acids
Assignee: Lever Brothers Co
•
Filing: 1963-03-01
•
Granted: 1966-11-01
•
Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Devine John
- 👤 Davies James Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:59
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A PROCESS FOR THE SYNTHESIS OF A CARBOXYLIC ACID WHICH PROCESS INCLUDES THE STEP OF REACTING AN OLEFINIC COMPOUND WITH CARBON MONOXIDE UNDER CONDITIONS TO PRODUCE A CARBOXYLIC ACID, THE IMPROVEMENT COMPRISING PROVIDING FOR THE PRESENCE IN THE REACTION MASS OF AN ORGANIC SULFONIC ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF (A) THE SULFONIC ACIDS OF ALIPHATIC HYDROCARBONS HAVING FROM 1 TO 20 CARBON ATOMS, (B) THE SULFONIC ACIDS OF BENZENE AND NAPHTHALENE, AND (C) THE SULFONIC ACIDS OF THE HYDROXY AND ALKYL DERIVATIVES OF BENZENE AND NAPTHALENE, THE ALKYL GROUPS HAVING FROM 1 TO 20 CARBON ATOMS, THE MOLE RATIO BETWEEN SAID SULFONIC ACID AND SAID OLEFINIC COMPOUND BEING BETWEEN ABOUT 1:3 AND 30:1.
Claim 2
Dependent Claim
117 words
IN A PROCESS FOR THE SYNTHESIS OF A CARBOXYLIC ACID WHICH PROCESS INCLUDES THE STEP OF REACTING AN OLEFINIC COMPOUND WITH CARBON MONOXIDE UNDER CONDITIONS TO PRODUCE A CARBOXYLIC ACID, THE IMPROVEMENT COMPRISING PROVIDING FOR THE PRESENCE IN THE REACTION MASS OF AN ORGANIC SULFONIC ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF (A) THE SULFONIC ACIDS OF ALIPHATIC HYDROCARBONS HAVING FROM 1 TO 20 CARBON ATOMS, (B) THE SULFONIC ACIDS OF BENZENE AND NAPHTHALENE, AND (C) THE SULFONIC ACIDS OF THE HYDROXY AND ALKYL DERIVATIVES OF BENZENE AND NAPTHALENE, THE ALKYL GROUPS HAVING FROM 1 TO 20 CARBON ATOMS, THE MOLE RATIO BETWEEN SAID SULFONIC ACID AND SAID OLEFINIC COMPOUND BEING BETWEEN ABOUT 1:3 AND 30:1.
References Cited (Backward Citations)
US2831877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |