GB486886A - Improvements in or relating to the separation of the constituents of organic-inorganic addition compounds - Google Patents
Improvements in or relating to the separation of the constituents of organic-inorganic addition compoundsInfo
- Publication number
- GB486886A GB486886A GB34131/36A GB3413136A GB486886A GB 486886 A GB486886 A GB 486886A GB 34131/36 A GB34131/36 A GB 34131/36A GB 3413136 A GB3413136 A GB 3413136A GB 486886 A GB486886 A GB 486886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- distillation
- acetic acid
- boron
- constituents
- different pressures
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The constituents of an organic-inorganic addition compound having different constantboiling compositions at different pressures are separated by distillation under at least two different pressures. The acetic acid-boron fluoride complex obtained by reacting CO with methanol in the presence of BF3 may be distilled at subatmospheric pressure, e.g. 15-20 mm., until 10-15 per cent of the acetic acid distils leaving a constant-boiling mixture. Distillation is then continued at about atmospheric pressure, boron fluoride coming over until the original composition is attained. By repeating the cycle, complete separation is obtained. Addition compounds of other aliphatic acids, e.g. formic, propionic, butyric, isobutyric and higher acids, with boron-halogen compounds generally, may be similarly treated. Examples describe the treatment of the complex approximating to 2CH3COOH.BF3, distillation being effected alternately at 70 DEG C. and 15 mm., and at 150 DEG C. and 760 mm. or higher.ALSO:The constituents of an organic-inorganic addition compound having different constant boiling compositions at different pressures are separated by distillation under at least two different pressures. The acetic acid-boron fluoride complex obtained by reacting CO with methanol in the presence of BF3 may be distilled at subatmospheric pressure, e.g. 15-20 mm., until 10-15 per cent of the acetic acid distils leaving a constant boiling mixture. Distillation is then continued at about atmospheric pressure, boron fluoride coming over until the original composition is attained. By repeating the cycle, complete separation is obtained. Addition compounds of other aliphatic acids, e.g. formic, propionic, butyric, isobutyric, and higher acids, with boron-halogen compounds generally may be similarly treated. Examples describe the treatment of the complex approximating to 2CH3COOH. BF3, distillation being effected alternately at 70 DEG C. and 15 mm., and at 150 DEG C. and 760 mm. or higher.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US486886XA | 1935-12-13 | 1935-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB486886A true GB486886A (en) | 1938-06-13 |
Family
ID=21955888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34131/36A Expired GB486886A (en) | 1935-12-13 | 1936-12-11 | Improvements in or relating to the separation of the constituents of organic-inorganic addition compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB486886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2532303A1 (en) * | 1982-09-01 | 1984-03-02 | Ugine Kuhlmann | PROCESS FOR DECOMPOSING AN ORTHO-BENZOYL-BENZOIC ACID COMPLEX, HYDROGEN FLUORIDE AND BORON TRIFLUORIDE |
-
1936
- 1936-12-11 GB GB34131/36A patent/GB486886A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2532303A1 (en) * | 1982-09-01 | 1984-03-02 | Ugine Kuhlmann | PROCESS FOR DECOMPOSING AN ORTHO-BENZOYL-BENZOIC ACID COMPLEX, HYDROGEN FLUORIDE AND BORON TRIFLUORIDE |
| EP0102297A2 (en) * | 1982-09-01 | 1984-03-07 | Elf Atochem S.A. | Process for the decomposition of a complex of ortho-benzoyl-benzoic acid, hydrofluoric acid and boron trifluoride |
| EP0102297A3 (en) * | 1982-09-01 | 1984-04-11 | Atochem | Process for the decomposition of a complex of ortho-benzoyl-benzoic acid, hydrofluoric acid and boron trifluoride |
| US4496760A (en) * | 1982-09-01 | 1985-01-29 | Pcuk Produits Chimiques Ugine Kuhlmann | Process of decomposition of a complex of ortho-benzoyl benzoic acid, hydrogen fluoride and boron trifluoride |
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