JPS5615695A - Recovery of dicarboxylic acid - Google Patents
Recovery of dicarboxylic acidInfo
- Publication number
- JPS5615695A JPS5615695A JP9092679A JP9092679A JPS5615695A JP S5615695 A JPS5615695 A JP S5615695A JP 9092679 A JP9092679 A JP 9092679A JP 9092679 A JP9092679 A JP 9092679A JP S5615695 A JPS5615695 A JP S5615695A
- Authority
- JP
- Japan
- Prior art keywords
- dicarboxylic acid
- phase
- acid
- solvent
- aromatic hydrocarbon
- 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.)
- Pending
Links
Landscapes
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
PURPOSE: To recover a dicarboxylic acid readily an at a low cost, by extracting a dicarboxylic acid with an aromatic hydrocarbon solvent, and then extracting the extracted solvent phase with a dihydric alcohol to transfer the dicarboxylic acid to the alcoholic phase selectively.
CONSTITUTION: A fungus body is removed from a fermentation liquid, and an inorganic acid is added to adjust the pH of the liquid to 4.0 or lower. The free dicarboxylic acid is deposited, and the liquid is brought into contact with a solvent consisting of an aromatic hydrocarbon at 60W100°C to extract the dicarboxylic acid in the aromatic hydrocarbon phase preferentially. The solvent phase is then extracted with a dihydric alcohol at 50W100°C to transfer the discarboxylic acid to the alcoholic phase. The dihydric alcohol phase is directly, or after concentration, subjected to the esterification step for forming a polyester. Succinic, azelaic, 1,10- decanedicarboxylic acid, etc. may be cited as the dicarboxylic acid, and a ≥10C aliphatic dicarboxylic acid is recovered more effectively.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9092679A JPS5615695A (en) | 1979-07-19 | 1979-07-19 | Recovery of dicarboxylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9092679A JPS5615695A (en) | 1979-07-19 | 1979-07-19 | Recovery of dicarboxylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5615695A true JPS5615695A (en) | 1981-02-14 |
Family
ID=14012029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9092679A Pending JPS5615695A (en) | 1979-07-19 | 1979-07-19 | Recovery of dicarboxylic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5615695A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088055C (en) * | 1999-09-29 | 2002-07-24 | 中国石油化工集团公司 | Process for extracting alpha-or omege-alkadicarboxylic acid from fermented liquid and refining it |
| WO2018010057A1 (en) * | 2016-07-11 | 2018-01-18 | Cathay R&D Center Co., Ltd. | Solid-solid separation process for long chain dicarboxylic acids |
| US11155512B2 (en) * | 2019-12-24 | 2021-10-26 | Cathay Biotech Inc. | Method and system for refining long chain dicarboxylic acid |
-
1979
- 1979-07-19 JP JP9092679A patent/JPS5615695A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088055C (en) * | 1999-09-29 | 2002-07-24 | 中国石油化工集团公司 | Process for extracting alpha-or omege-alkadicarboxylic acid from fermented liquid and refining it |
| WO2018010057A1 (en) * | 2016-07-11 | 2018-01-18 | Cathay R&D Center Co., Ltd. | Solid-solid separation process for long chain dicarboxylic acids |
| US10807937B2 (en) | 2016-07-11 | 2020-10-20 | Cathay Biotech Inc. | Solid-solid separation process for long chain dicarboxylic acids |
| US11427525B2 (en) | 2016-07-11 | 2022-08-30 | Cathay Biotech Inc. | Solid-solid separation process for long chain dicarboxylic acids |
| US12030848B2 (en) | 2016-07-11 | 2024-07-09 | Cathay Biotech Inc. | Solid-solid separation process for long chain dicarboxylic acids |
| US11155512B2 (en) * | 2019-12-24 | 2021-10-26 | Cathay Biotech Inc. | Method and system for refining long chain dicarboxylic acid |
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