JPS643137A - Purification of 2,4-xylenol - Google Patents
Purification of 2,4-xylenolInfo
- Publication number
- JPS643137A JPS643137A JP15664187A JP15664187A JPS643137A JP S643137 A JPS643137 A JP S643137A JP 15664187 A JP15664187 A JP 15664187A JP 15664187 A JP15664187 A JP 15664187A JP S643137 A JPS643137 A JP S643137A
- Authority
- JP
- Japan
- Prior art keywords
- xylenol
- phenylenediamine
- separated
- purity
- fractional distillation
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain a high-purity 2,4-xylenol from a mixture of 2,4- and 2,5- xylenol isomers in high yield, by selectively crystallizing 2,4-xylenol as a molecular compound with p-phenylenediamine.
CONSTITUTION: A xylenol isomer mixture containing 2,4-xylenol and 2,5-xylenol which cannot be separated from each other by simple fractional distillation because of nearly equal boiling points is made to react with p-phenylenediamine usually at 0W212°C, preferably 60W180°C and a molecular compound of 2,4- xylenol and p-phenylenediamine is selectively crystallized. The crystallized compound is separated into 2,4-xylenol and p-phenylenediamine e.g. by the treatment with dilute mineral acids or fractional distillation. High-purity 2,4- xylenol useful as a raw material for synthetic polymer, etc., can separated from the above isomer mixture in an improved separation yield compared with conventional method.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15664187A JPS643137A (en) | 1987-06-25 | 1987-06-25 | Purification of 2,4-xylenol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15664187A JPS643137A (en) | 1987-06-25 | 1987-06-25 | Purification of 2,4-xylenol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH013137A JPH013137A (en) | 1989-01-06 |
| JPS643137A true JPS643137A (en) | 1989-01-06 |
Family
ID=15632105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15664187A Pending JPS643137A (en) | 1987-06-25 | 1987-06-25 | Purification of 2,4-xylenol |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643137A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056189A (en) * | 2001-08-20 | 2003-02-26 | Taisei Corp | Building |
| JP2006336232A (en) * | 2005-05-31 | 2006-12-14 | Toyo Tire & Rubber Co Ltd | Compression machine and anti-vibration rubber member for compression machine |
| CN115557825A (en) * | 2022-10-25 | 2023-01-03 | 黄河三角洲京博化工研究院有限公司 | Method for separating high-purity mesitylene from reformed carbon nine by using composite solvent |
-
1987
- 1987-06-25 JP JP15664187A patent/JPS643137A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056189A (en) * | 2001-08-20 | 2003-02-26 | Taisei Corp | Building |
| JP2006336232A (en) * | 2005-05-31 | 2006-12-14 | Toyo Tire & Rubber Co Ltd | Compression machine and anti-vibration rubber member for compression machine |
| CN115557825A (en) * | 2022-10-25 | 2023-01-03 | 黄河三角洲京博化工研究院有限公司 | Method for separating high-purity mesitylene from reformed carbon nine by using composite solvent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0137124A3 (en) | Removal of light impurities from caprolactam by distillation with water | |
| EP1002787A4 (en) | Process for the purification of (meth)acrylic acid | |
| JPS643137A (en) | Purification of 2,4-xylenol | |
| JPS5625130A (en) | Purification of high melting point compound | |
| JPS5527117A (en) | Preparation of isopropenylphenol | |
| DE60102641D1 (en) | Process for the preparation of 2,6-dimethylnaphthalene | |
| JPS55139327A (en) | Preparation of high purity para-xylene | |
| JPS5610127A (en) | Separation of cresol | |
| JPS525733A (en) | Process for separation and purification of cyclohexene | |
| JPS5781436A (en) | Purification of ethyl acetate | |
| JPS539728A (en) | Separation and purification of nuclear-substituted benzylalcohol isomers | |
| JPS6466133A (en) | Separation of 1,4-bis2(-hydroxyhexafluoro-2-propyl) benzene | |
| JPS57165333A (en) | Purification of 2,6-xylenol | |
| JPS5750984A (en) | Preparation of dibenzofuran | |
| JPS643136A (en) | Purification of 2,4-xylenol | |
| JPS5266684A (en) | Purification and separation of 2-keto-l-glonic acid | |
| JPS5795923A (en) | Preparation of beta-methylnaphthalene | |
| KR100511416B1 (en) | A method of purifying quinaldine | |
| JPS51149212A (en) | Process for separating mixture of benzen and alcohols | |
| JPS5750986A (en) | Preparation of dibenzofuran | |
| JPS549257A (en) | Preparation of highly pure 1,8-dihydroanthraquinone | |
| JPS5665836A (en) | Separating method of highly pure dimethylphenol | |
| JPS5387381A (en) | Treatment of phosphite | |
| JPS5750985A (en) | Preparation of dibenzofuran | |
| JPS6461436A (en) | Method for separating 2,6-diisopropylnaphthalene |