NO170756C - PROCEDURE FOR SEPARATION OF CARBOXYLIC ACIDS - Google Patents
PROCEDURE FOR SEPARATION OF CARBOXYLIC ACIDSInfo
- Publication number
- NO170756C NO170756C NO874744A NO874744A NO170756C NO 170756 C NO170756 C NO 170756C NO 874744 A NO874744 A NO 874744A NO 874744 A NO874744 A NO 874744A NO 170756 C NO170756 C NO 170756C
- Authority
- NO
- Norway
- Prior art keywords
- acid
- separation
- solvent system
- procedure
- carboxylic acids
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
- C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
- C07C57/03—Monocarboxylic acids
- C07C57/04—Acrylic acid; Methacrylic acid
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
Separation of at least one acid chosen from isobutyric acid and methacrylic acid by extraction from an aqueous solution of the said acid by employing an organic solvent system containing toluene, followed by a distillation during which the solvent system is recovered and returned entirely to the extraction. The solvent system is a mixture of toluene and of at least one saturated organic ester which is poorly soluble in water and which has a boiling temperature of between 98 DEG C and 130 DEG C. Application to the purification of methacrylic acid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8615840A FR2606663B1 (en) | 1986-11-14 | 1986-11-14 | PROCESS FOR THE EXTRACTIVE SEPARATION OF A CARBOXYLIC ACID FROM AN AQUEOUS SOLUTION OF THE SAME |
Publications (4)
Publication Number | Publication Date |
---|---|
NO874744D0 NO874744D0 (en) | 1987-11-13 |
NO874744L NO874744L (en) | 1988-05-16 |
NO170756B NO170756B (en) | 1992-08-24 |
NO170756C true NO170756C (en) | 1992-12-02 |
Family
ID=9340806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO874744A NO170756C (en) | 1986-11-14 | 1987-11-13 | PROCEDURE FOR SEPARATION OF CARBOXYLIC ACIDS |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0271371B1 (en) |
JP (1) | JPS63135350A (en) |
KR (1) | KR960006664B1 (en) |
AT (1) | ATE67477T1 (en) |
CA (1) | CA1274847A (en) |
DE (1) | DE3773145D1 (en) |
ES (1) | ES2026932T3 (en) |
FR (1) | FR2606663B1 (en) |
GR (1) | GR3003364T3 (en) |
NO (1) | NO170756C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5877345A (en) * | 1997-02-07 | 1999-03-02 | Rohm And Haas Company | Process for producing butyl acrylate |
CN101384539B (en) * | 2005-12-26 | 2013-05-08 | 三菱丽阳株式会社 | Method for extracting methacrylic acid |
CN113149832A (en) * | 2021-05-08 | 2021-07-23 | 青岛科技大学 | Method for separating n-butyric acid and water by liquid-liquid extraction-heterogeneous azeotropic distillation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR716448A (en) * | 1930-05-13 | 1931-12-21 | Organic acid concentration process | |
IT1084028B (en) * | 1977-03-16 | 1985-05-25 | Montedison Spa | PROCEDURE FOR THE SEPARATION OF UNSATURATED CARBOXYLIC ACIDS FROM AQUEOUS SOLUTIONS CONTAINING THEM |
-
1986
- 1986-11-14 FR FR8615840A patent/FR2606663B1/en not_active Expired
-
1987
- 1987-10-22 ES ES198787402374T patent/ES2026932T3/en not_active Expired - Lifetime
- 1987-10-22 AT AT87402374T patent/ATE67477T1/en active
- 1987-10-22 DE DE8787402374T patent/DE3773145D1/en not_active Expired - Fee Related
- 1987-10-22 EP EP19870402374 patent/EP0271371B1/en not_active Expired - Lifetime
- 1987-11-12 CA CA000551638A patent/CA1274847A/en not_active Expired - Lifetime
- 1987-11-13 NO NO874744A patent/NO170756C/en unknown
- 1987-11-13 KR KR1019870012825A patent/KR960006664B1/en active IP Right Grant
- 1987-11-13 JP JP62287224A patent/JPS63135350A/en active Pending
-
1991
- 1991-12-17 GR GR91402005T patent/GR3003364T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO874744D0 (en) | 1987-11-13 |
ES2026932T3 (en) | 1992-05-16 |
NO170756B (en) | 1992-08-24 |
KR880005953A (en) | 1988-07-21 |
ATE67477T1 (en) | 1991-10-15 |
KR960006664B1 (en) | 1996-05-22 |
CA1274847A (en) | 1990-10-02 |
FR2606663B1 (en) | 1989-02-10 |
NO874744L (en) | 1988-05-16 |
EP0271371B1 (en) | 1991-09-18 |
EP0271371A1 (en) | 1988-06-15 |
GR3003364T3 (en) | 1993-02-17 |
DE3773145D1 (en) | 1991-10-24 |
FR2606663A1 (en) | 1988-05-20 |
JPS63135350A (en) | 1988-06-07 |
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