Patent US3714228A successfully refreshed from Google Patents.
US3714228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of esters
Assignee: Universal Oil Products Co
•
Filing: 1970-08-14
•
Granted: 1973-01-30
•
Expires: 1990-08-14
Abstract
Abstract The esterification of carboxylic acids with carbinols is effected in the presence of a catalyst comprising a palladium salt or palladium complex at esterification conditions. The reaction is exemplified by the reaction of benzoic acid with benzyl alcohol in the presence of palladium acetate to produce benzyl benzoate.
Inventors
- 👤 S Massie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:51
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C67/00; C07C69/78
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
59 words
A process for the preparation of an ester which comprises reacting a carboxylic acid with an alcohol in the presence of a palladium salt or complex at a temperature in the range of from about 100* to about 250* C. and a pressure in the range of from about atmospheric to about 100 atmospheres, and recovering the resultant ester.
Claim 2
Dependent Claim
59 words
A process for the preparation of an ester which comprises reacting a carboxylic acid with an alcohol in the presence of a palladium salt or complex at a temperature in the range of from about 100* to about 250* C. and a pressure in the range of from about atmospheric to about 100 atmospheres, and recovering the resultant ester.
Claim 3
Dependent Claim
18 words
The process as set forth in claim 1 in which said palladium salt or complex is palladium acetate.
Claim 4
Dependent Claim
18 words
The process as set forth in claim 1 in which said palladium salt or complex is palladium chloride.
Claim 5
Dependent Claim
18 words
The process as set forth in claim 1 in which said palladium salt or complex is palladium acetylacetonate.
Claim 6
Dependent Claim
27 words
The process as set forth in claim 1 in which said carboxylic acid is benzoic acid, said alcohol is benzyl alcohol and said ester is benzyl benzoate.
Claim 7
Dependent Claim
27 words
The process as set forth in claim 1 in which said carboxylic acid is acetic acid, said alcohol is benzyl alcohol and said ester is benzyl acetate.
Claim 8
Dependent Claim
27 words
The process as set forth in claim 1 in which said carboxylic acid is butyric acid, said alcohol is benzyl alcohol and said ester is benzyl butyrate.
Claim 9
Dependent Claim
27 words
The process as set forth in claim 1 in which said carboxylic acid is acrylic acid, said alcohol is ethyl alcohol and said ester is ethyl acrylate.
References Cited (Backward Citations)
US1908708A
Cited
US3534088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |