US3341579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of acetic acid and alkyl chlorides from ester-alcohol mixtures
Assignee: Wacker Chemie AG
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Filing: 1965-03-11
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Granted: 1967-09-12
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Expires: 1985-03-11
Abstract
No abstract record available.
Inventors
- 👤 Kunstle Gerhard
- 👤 Siegl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:20
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/16; C07C51/00; C07C51/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
METHOD OF PROCESSING ESTER-ALCOHOL MIXTURES SELECTED FROM THE GROUP CONSISTING OF METHYL ACETATE-METHANOL AND ETHYL ACETATE-ETHANOL, WHICH COMPRISES SUBJECTING SAID ESTER-ALCOHOL MIXTURE TO THE ACTION OF HYDROGEN CHLORIDE AT A TEMPERATURE UP TO 100*C. IN A REACTION ZONE CONSISTING ESSENTIALLY OF LARGE-SURFACE FILLER BODIES CONTAINING A CATION EXCHANGER, WITHDRAWING ANY EXCESS FORMED HYDROCHLORIC ACID FROM THE LOWER PORTION OF SAID REACTION ZONE, CONTINUOUSLY WITHDRAWING THE REACTION MIXTURE FREE OF HYDROCHLORIC ACID FROM THE UPPER PORTION OF SAID REACTION ZONE IN VAPOR FORM, SPLITTIN SAID REACTION MIXTURE IN THE PRESENCE OF WATER AND A CATION EXCHANGER INTO ALKYL CHLORIDE AND AN AQUEOUS ALCOHOL-ACID MIXTURE, REEMOVING THE RESULTING REACTION WATER CONTAINING ACETIC ACID FROM SAID LAST-MENTIONED MIXTURE, AND CIRCULATING THE REMAINING ALCOHOL TO SAID REACTION ZONE.
Claim 2
Dependent Claim
124 words
METHOD OF PROCESSING ESTER-ALCOHOL MIXTURES SELECTED FROM THE GROUP CONSISTING OF METHYL ACETATE-METHANOL AND ETHYL ACETATE-ETHANOL, WHICH COMPRISES SUBJECTING SAID ESTER-ALCOHOL MIXTURE TO THE ACTION OF HYDROGEN CHLORIDE AT A TEMPERATURE UP TO 100*C. IN A REACTION ZONE CONSISTING ESSENTIALLY OF LARGE-SURFACE FILLER BODIES CONTAINING A CATION EXCHANGER, WITHDRAWING ANY EXCESS FORMED HYDROCHLORIC ACID FROM THE LOWER PORTION OF SAID REACTION ZONE, CONTINUOUSLY WITHDRAWING THE REACTION MIXTURE FREE OF HYDROCHLORIC ACID FROM THE UPPER PORTION OF SAID REACTION ZONE IN VAPOR FORM, SPLITTIN SAID REACTION MIXTURE IN THE PRESENCE OF WATER AND A CATION EXCHANGER INTO ALKYL CHLORIDE AND AN AQUEOUS ALCOHOL-ACID MIXTURE, REEMOVING THE RESULTING REACTION WATER CONTAINING ACETIC ACID FROM SAID LAST-MENTIONED MIXTURE, AND CIRCULATING THE REMAINING ALCOHOL TO SAID REACTION ZONE.
References Cited (Backward Citations)
US2454645A
Cited
US2936321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |