US2686180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esterification process
Assignee: Bayer AG
•
Filing: 1951-01-03
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Granted: 1954-08-10
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Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Erich
- 👤 Schnegg Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:15
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08; C07C69/00; C07C69/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS OF PRODUCING CARBOXYLIC ACID ESTERS, WHICH PROCESS COMPRISES MIXING AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC ACIDS, CHLORINE SUBSTITUTED SATURATED ALIPHATIC ACIDS AND AROMATIC CARBOXYLIC ACIDS WITH AN ALIPHATIC ALCOHOL IN THE PRESENCE OF A CARBODIIMIDE OF THE GENERAL FORMULA @SP R-N=C=N-R @SP WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, AN ALIPHATIC HYDROCARBON RADICAL AND A CYCLOALIPHATIC HYDROCARBON RADICAL, AND ALLOWING THE MIXTURE TO REACT FOR AT LEAST TEN MINUTES.
Claim 2
Dependent Claim
81 words
A PROCESS OF PRODUCING CARBOXYLIC ACID ESTERS, WHICH PROCESS COMPRISES MIXING AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC ACIDS, CHLORINE SUBSTITUTED SATURATED ALIPHATIC ACIDS AND AROMATIC CARBOXYLIC ACIDS WITH AN ALIPHATIC ALCOHOL IN THE PRESENCE OF A CARBODIIMIDE OF THE GENERAL FORMULA @SP R-N=C=N-R @SP WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, AN ALIPHATIC HYDROCARBON RADICAL AND A CYCLOALIPHATIC HYDROCARBON RADICAL, AND ALLOWING THE MIXTURE TO REACT FOR AT LEAST TEN MINUTES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |