US3555078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing aliphatic esters
Assignee: Progil SARL
•
Filing: 1969-08-22
•
Granted: 1971-01-12
•
Expires: 1989-08-22
Abstract
Abstract A PROCESS FOR MANUFACTURING ALIPHATIC ESTERS, SUCH AS ETHYL ACETATE ESSENTIALLY FREE OF IMPURITIES AND AT A HIGH CONVERSION RATE AND YIELD IS PROVIDED THE PROCESS INVOLVES ABSORBING AN OLEFIN UNDER PRESSURE IN SULFURIC ACID; REACTING THE ABSORBATE WITH MONOCHLORO ACETIC ACID; SEPARATING THE ALKYL MONOCHLORACETATE FROM THE REACTION MIXTURE UNDE REDUCED PRESURE; SUBMITTING THE ESTER TO AN ACIDOLYSIS UTILIZING A SUITABLE CARBOXYLIX ACID IN EXCESS; AND SEPARATING THE FINAL ESTER BY DISTILLATION WITH RECYCLYING OF THE ORGANIC REAGENTS AND SULFURIC ACID.
Inventors
- 👤 Louis Amiet
- 👤 Jean-Claude Soula
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:09
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/12; C07C69/14; C07C67/00; C07C67/04; C07C67/10; C07C67/48; C07C67/52; C07C67/54; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |