JPS57206633A - Purifying method of anthraquinone - Google Patents
Purifying method of anthraquinoneInfo
- Publication number
- JPS57206633A JPS57206633A JP8971581A JP8971581A JPS57206633A JP S57206633 A JPS57206633 A JP S57206633A JP 8971581 A JP8971581 A JP 8971581A JP 8971581 A JP8971581 A JP 8971581A JP S57206633 A JPS57206633 A JP S57206633A
- Authority
- JP
- Japan
- Prior art keywords
- anthraquinone
- chlorine dioxide
- oxidizing
- diels
- naphthoquinone
- 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 purify anthraquinone, by oxidizing a crude anthraquinone obtained by oxidizing a Diels-Alder reaction adduct of 1,4-naphthoquinone with butadiene in an aqueous medium in the presence of chlorine dioxide.
CONSTITUTION: A Diels-Alder reaction adduct of 1,4-naphthoquinone with butadiene is oxidized with molecular oxygen in an aqueous solution of a caustic alkali to give crude anthraquinone, which is then purified. In the process, the crude anthraquinone is oxidized in an aqueous medium in the presence of chlorine dioxide, and water-insoluble impurities are made soluble in water and removed to afford the anthraquinone of high purity. The color tone of the resultant anthraquinone is yellow. The amount of the oxidizing agent chlorine dioxide to be used is 0.5W30%, preferably 1W5%.
USE: A digestion assistant of pulp, intermediates for dyes, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8971581A JPS57206633A (en) | 1981-06-12 | 1981-06-12 | Purifying method of anthraquinone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8971581A JPS57206633A (en) | 1981-06-12 | 1981-06-12 | Purifying method of anthraquinone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57206633A true JPS57206633A (en) | 1982-12-18 |
Family
ID=13978459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8971581A Pending JPS57206633A (en) | 1981-06-12 | 1981-06-12 | Purifying method of anthraquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57206633A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62267362A (en) * | 1986-05-02 | 1987-11-20 | インドスペック ケミカル コーポレーション | Production of anthraquinoes |
EP0921111A1 (en) * | 1997-12-02 | 1999-06-09 | Basf Aktiengesellschaft | Process for the preparation of substituted anthraquinones |
US6127580A (en) * | 1995-09-06 | 2000-10-03 | Basf Aktiengesellschaft | Process for the preparation of substituted anthraquinones |
KR100336113B1 (en) * | 1999-06-30 | 2002-05-08 | 박찬구 | Producing method of 1,4-naphthoquinones and anthraquinones using oxidizing agent |
-
1981
- 1981-06-12 JP JP8971581A patent/JPS57206633A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62267362A (en) * | 1986-05-02 | 1987-11-20 | インドスペック ケミカル コーポレーション | Production of anthraquinoes |
US6127580A (en) * | 1995-09-06 | 2000-10-03 | Basf Aktiengesellschaft | Process for the preparation of substituted anthraquinones |
EP0921111A1 (en) * | 1997-12-02 | 1999-06-09 | Basf Aktiengesellschaft | Process for the preparation of substituted anthraquinones |
KR100336113B1 (en) * | 1999-06-30 | 2002-05-08 | 박찬구 | Producing method of 1,4-naphthoquinones and anthraquinones using oxidizing agent |
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