GB982751A - Separation of dibasic acids - Google Patents
Separation of dibasic acidsInfo
- Publication number
- GB982751A GB982751A GB4270363A GB4270363A GB982751A GB 982751 A GB982751 A GB 982751A GB 4270363 A GB4270363 A GB 4270363A GB 4270363 A GB4270363 A GB 4270363A GB 982751 A GB982751 A GB 982751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aqueous
- succinic
- water
- phase
- acid
- 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
- C07C51/48—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)
Abstract
Aqueous mixtures of succinic, glutaric and adipic acids are separated by contacting the mixture with water-immiscible solvent to give a water to solvent ratio of 0.05 to 2.0, separating into two phases, and recovering adipic acid from the immiscible solvent phase and succinic and glutaric acid from the aqueous phase. The aqueous mixture is particularly, the residue after the crystallization of adipic acid from the oxidation product of cycloparaffins in a two-stage process. The solvents may be aliphatic alcohols with 4-15 carbon atoms and the esters thereof. The immiscible solvent phase is again washed and adipic acid fractionally crystallized from the aqueous stage while the mother liquor is returned to the original aqueous mixture. The succinic and glutaric acids may be recovered in combination from the original aqueous phase, or obtained individually by contacting with a water-immiscible solvent and recovering succinic acid from the resulting aqueous phase and glutaric acid from the solvent phase, preferably by a further extraction with water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23594562A | 1962-11-07 | 1962-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB982751A true GB982751A (en) | 1965-02-10 |
Family
ID=22887494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4270363A Expired GB982751A (en) | 1962-11-07 | 1963-10-29 | Separation of dibasic acids |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE639662A (en) |
| CH (1) | CH429691A (en) |
| DE (1) | DE1468291A1 (en) |
| GB (1) | GB982751A (en) |
| LU (1) | LU44755A1 (en) |
| NL (1) | NL300228A (en) |
| NO (1) | NO119081B (en) |
| SE (1) | SE312333B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112441915A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Method for treating crystallization mother liquor in adipic acid crystallization refining process |
-
0
- NL NL300228D patent/NL300228A/xx unknown
- BE BE639662D patent/BE639662A/xx unknown
-
1963
- 1963-10-29 GB GB4270363A patent/GB982751A/en not_active Expired
- 1963-11-02 NO NO15067263A patent/NO119081B/no unknown
- 1963-11-05 DE DE19631468291 patent/DE1468291A1/en active Pending
- 1963-11-05 LU LU44755D patent/LU44755A1/xx unknown
- 1963-11-06 SE SE1223263A patent/SE312333B/xx unknown
- 1963-11-06 CH CH1362963A patent/CH429691A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1468291A1 (en) | 1969-05-29 |
| NL300228A (en) | |
| SE312333B (en) | 1969-07-14 |
| CH429691A (en) | 1967-02-15 |
| NO119081B (en) | 1970-03-23 |
| LU44755A1 (en) | 1964-05-05 |
| BE639662A (en) |
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