JPS568455A - Production of vat dye - Google Patents
Production of vat dyeInfo
- Publication number
- JPS568455A JPS568455A JP8392479A JP8392479A JPS568455A JP S568455 A JPS568455 A JP S568455A JP 8392479 A JP8392479 A JP 8392479A JP 8392479 A JP8392479 A JP 8392479A JP S568455 A JPS568455 A JP S568455A
- Authority
- JP
- Japan
- Prior art keywords
- aminoanthraquinone
- sulfuric acid
- vat dye
- reaction product
- product
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To produce a vat dye of good quality in high yield, by a method wherein 1-aminoanthraquinone is condensed with an alkaline condensation agent to obtain a reaction product which is then chlorinated directly in a sulfuric acid solvent, and then impurities are removed from the resulting product.
CONSTITUTION: 1-Aminoanthraquinone is condensed in the presence of dimethylformamide and an oxidizing agent by the action of an alkaline condensation agent. The reaction mixt. is diluted with water or an org. solvent and filtered to obtain a reaction product which is then dissolved in a sulfuric acid solvent. Chlorine gas is passed through the resulting soln. to chlorinate the reaction product. Impurities are removed by adjusting the concentration of sulfuric acid to obtain the desired vat dye of the formula (wherein n is 1, 2). By this process, an after-treatment stage can be deleted in which indanthrone is derived from the condensation product obtd. from 1-aminoanthraquinone by using the alkaline condensation agent.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8392479A JPS568455A (en) | 1979-07-04 | 1979-07-04 | Production of vat dye |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8392479A JPS568455A (en) | 1979-07-04 | 1979-07-04 | Production of vat dye |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS568455A true JPS568455A (en) | 1981-01-28 |
JPS629142B2 JPS629142B2 (en) | 1987-02-26 |
Family
ID=13816141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8392479A Granted JPS568455A (en) | 1979-07-04 | 1979-07-04 | Production of vat dye |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS568455A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5873547U (en) * | 1981-11-12 | 1983-05-18 | 日本電子機器株式会社 | Temperature sensitive switch |
CN104497618A (en) * | 2014-11-29 | 2015-04-08 | 萧县凯奇化工科技有限公司 | Vat blue BCDN dye and preparation method thereof |
-
1979
- 1979-07-04 JP JP8392479A patent/JPS568455A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5873547U (en) * | 1981-11-12 | 1983-05-18 | 日本電子機器株式会社 | Temperature sensitive switch |
CN104497618A (en) * | 2014-11-29 | 2015-04-08 | 萧县凯奇化工科技有限公司 | Vat blue BCDN dye and preparation method thereof |
CN104497618B (en) * | 2014-11-29 | 2016-08-24 | 萧县凯奇化工科技有限公司 | A kind of Vat Blue BC DN dyestuff and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS629142B2 (en) | 1987-02-26 |
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