JPS5575455A - Preparation of thick aqueous dispersion of vat dye - Google Patents
Preparation of thick aqueous dispersion of vat dyeInfo
- Publication number
- JPS5575455A JPS5575455A JP14776578A JP14776578A JPS5575455A JP S5575455 A JPS5575455 A JP S5575455A JP 14776578 A JP14776578 A JP 14776578A JP 14776578 A JP14776578 A JP 14776578A JP S5575455 A JPS5575455 A JP S5575455A
- Authority
- JP
- Japan
- Prior art keywords
- dye
- vat dye
- vat
- solvent
- aqueous
- 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)
- Coloring (AREA)
Abstract
PURPOSE: To prepare an aqueous dispersion of vat dye having high dye content and excellent dispersion property, fluidity and storage stability, by heat-treating vat. dye in a water-immiscible inactive organic solvent and finely grinding the vat dye in the presence of a surfactant.
CONSTITUTION: Vat dye of formula wherein n is 1W3, is suspended in a water- immiscible inactive organic solvent selected from the group consisiting of halogenated arom. hydrocarbons and nitroso arom. hydrocarbons. The solvent is used in an amount ranging from 5W20 times the amount of the vat dye. The suspension is heat-treated at a boiling temperature of the solvent or at a temperature below 200°C under pressure for from 30min to 24hrs. Then the solvent is removed. If necessary, the vat dye is converted into aqueous wetted cake or aqueous suspension, to which an anion surfactant such as sodium naphthalenesulfonate-formalin condensate, sodium ligninsulfonate is added. The mixt. is finely ground mechanically by grinder.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14776578A JPS5575455A (en) | 1978-12-01 | 1978-12-01 | Preparation of thick aqueous dispersion of vat dye |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14776578A JPS5575455A (en) | 1978-12-01 | 1978-12-01 | Preparation of thick aqueous dispersion of vat dye |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5575455A true JPS5575455A (en) | 1980-06-06 |
JPS6160873B2 JPS6160873B2 (en) | 1986-12-23 |
Family
ID=15437659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14776578A Granted JPS5575455A (en) | 1978-12-01 | 1978-12-01 | Preparation of thick aqueous dispersion of vat dye |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5575455A (en) |
-
1978
- 1978-12-01 JP JP14776578A patent/JPS5575455A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6160873B2 (en) | 1986-12-23 |
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