CH594587A5 - - Google Patents
Info
- Publication number
- CH594587A5 CH594587A5 CH190775A CH190775A CH594587A5 CH 594587 A5 CH594587 A5 CH 594587A5 CH 190775 A CH190775 A CH 190775A CH 190775 A CH190775 A CH 190775A CH 594587 A5 CH594587 A5 CH 594587A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742408011 DE2408011A1 (de) | 1974-02-20 | 1974-02-20 | Verfahren zur gewinnung von technisch reiner essigsaeure durch extraktivdestillation |
Publications (1)
Publication Number | Publication Date |
---|---|
CH594587A5 true CH594587A5 (cs) | 1978-01-13 |
Family
ID=5907871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH190775A CH594587A5 (cs) | 1974-02-20 | 1975-02-17 |
Country Status (10)
Country | Link |
---|---|
US (1) | US3951755A (cs) |
JP (1) | JPS50117713A (cs) |
BE (1) | BE825761A (cs) |
CA (1) | CA1052315A (cs) |
CH (1) | CH594587A5 (cs) |
DE (1) | DE2408011A1 (cs) |
FR (1) | FR2261250B1 (cs) |
GB (1) | GB1440908A (cs) |
IT (1) | IT1031819B (cs) |
NL (1) | NL7501765A (cs) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4217460A (en) * | 1975-10-11 | 1980-08-12 | Basf Aktiengesellschaft | Isolation of formic acid from its aqueous solutions |
DE2545658C2 (de) * | 1975-10-11 | 1985-12-19 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Gewinnung von Carbonsäuren aus ihren wäßrigen Lösungen |
FR2466448A1 (fr) * | 1979-10-01 | 1981-04-10 | Propylox Sa | Procede pour la recuperation d'acides carboxyliques a partir de melanges contenant des esters de glycols derives de ces acides |
NL8103517A (nl) * | 1981-07-24 | 1983-02-16 | Badger Bv | Werkwijze voor het scheiden van carbonzuren van mengsels met niet-zuren door een absorptie-stripbehandeling. |
DE3319651A1 (de) * | 1983-05-31 | 1984-12-06 | Basf Ag, 6700 Ludwigshafen | Verfahren zur destillativen gewinnung von ameisensaeure |
US4735690A (en) * | 1986-03-10 | 1988-04-05 | Lloyd Berg | Dehydration of impure formic acid by extractive distillation |
US4670105A (en) * | 1986-04-07 | 1987-06-02 | Lloyd Berg | Dehydration of propanoic acid by extractive distillation |
US4729818A (en) * | 1987-04-16 | 1988-03-08 | Lloyd Berg | Dehydration of acetic acid by extractive distillation |
US4894482A (en) * | 1988-12-06 | 1990-01-16 | Hoechst Celanese Corporation | Process for drying hydrogen fluoride-carboxylic acid mixtures |
US5167774A (en) * | 1992-02-06 | 1992-12-01 | Lloyd Berg | Dehydration of acetic acid by extractive distillation |
US5424190A (en) * | 1992-10-13 | 1995-06-13 | United States Biochemical Corporation | Method for using amide-containing stop solution |
US6946060B2 (en) * | 2002-07-01 | 2005-09-20 | Mallinckrodt Inc. | Purification of N,N-dimethylacetamide |
JP2005154435A (ja) * | 2003-11-07 | 2005-06-16 | Mitsubishi Chemicals Corp | モノカルボン酸の分離方法 |
US8729301B2 (en) * | 2008-04-03 | 2014-05-20 | Dow Corning Corporation | Method of dehydrating acetic acid |
WO2011022811A1 (en) | 2009-08-27 | 2011-03-03 | Logen Energy Corporation | Recovery of volatile carboxylic acids by a stripper- extractor system |
US8987509B2 (en) | 2009-08-27 | 2015-03-24 | Iogen Energy Corporation | Recovery of volatile carboxylic acids by extractive evaporation |
CN104447275A (zh) * | 2014-11-28 | 2015-03-25 | 浙江新和成药业有限公司 | 一种从醋酸废水中提纯醋酸的方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2425542A (en) * | 1944-07-13 | 1947-08-12 | Vernon K Krieble | Process for dehydrating carboxylic acids |
US2578698A (en) * | 1948-09-24 | 1951-12-18 | Kellogg M W Co | Dehydration of organic acids |
US3890208A (en) * | 1973-08-13 | 1975-06-17 | Petro Tex Chem Corp | Extractive distillation with furfurol and acyclic ketone cosolvent |
-
1974
- 1974-02-20 DE DE19742408011 patent/DE2408011A1/de active Pending
-
1975
- 1975-02-13 CA CA219,962A patent/CA1052315A/en not_active Expired
- 1975-02-14 NL NL7501765A patent/NL7501765A/xx not_active Application Discontinuation
- 1975-02-17 CH CH190775A patent/CH594587A5/xx not_active IP Right Cessation
- 1975-02-18 IT IT20369/75A patent/IT1031819B/it active
- 1975-02-18 US US05/550,643 patent/US3951755A/en not_active Expired - Lifetime
- 1975-02-19 JP JP50019986A patent/JPS50117713A/ja active Pending
- 1975-02-20 BE BE153546A patent/BE825761A/xx unknown
- 1975-02-20 GB GB719075A patent/GB1440908A/en not_active Expired
- 1975-02-20 FR FR7505293A patent/FR2261250B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2261250A1 (cs) | 1975-09-12 |
BE825761A (fr) | 1975-08-20 |
CA1052315A (en) | 1979-04-10 |
JPS50117713A (cs) | 1975-09-16 |
DE2408011A1 (de) | 1975-09-04 |
FR2261250B1 (cs) | 1978-08-18 |
IT1031819B (it) | 1979-05-10 |
NL7501765A (nl) | 1975-08-22 |
US3951755A (en) | 1976-04-20 |
GB1440908A (en) | 1976-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |