JPS56131669A - Production of highly concentrated solution of metal complex dye - Google Patents
Production of highly concentrated solution of metal complex dyeInfo
- Publication number
- JPS56131669A JPS56131669A JP3539980A JP3539980A JPS56131669A JP S56131669 A JPS56131669 A JP S56131669A JP 3539980 A JP3539980 A JP 3539980A JP 3539980 A JP3539980 A JP 3539980A JP S56131669 A JPS56131669 A JP S56131669A
- Authority
- JP
- Japan
- Prior art keywords
- dye
- org
- metal complex
- group
- concentrated solution
- 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
- Coloring (AREA)
Abstract
PURPOSE: To obtain the titled highly concentrated solution of a dye, which dyes polyamide fibers at least as well as powdered products, by a method wherein an acidic a.q. soln. of a specified metal complex dye is extracted by a water-insoluble org. solvent phase contg. a specified amine, and the dye component is back-extracted from said org. solvent phase.
CONSTITUTION: An acidic aq. soln. of a metal complex dye (which is a soluble complex salt contg. 1/2 or one equivalent metal atom such as Cr, Co or Cu in the dye molecule and does not contain sulfonic group or carboxyl group) is contacted with a water-insoluble org. solvent (e.g. toluene) contg. a water-insoluble sec. or tert.-amine of the formula (wherein R1 is a 6W24C aliph. group, arom. group; R2, R3 are each H, 1W24C hydrocarbon group with the proviso that at least one of R2, R3 is always hydrocarbon group) such as dibenzyldodecylamine, to extract said dye component by said org. phase. Then said org. phase is contacted with an alkaline aq. soln. (e.g. monoethanolamine) to back-extract said dye component, whereby a highly concentrated solution of the metal complex dye is produced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3539980A JPS56131669A (en) | 1980-03-18 | 1980-03-18 | Production of highly concentrated solution of metal complex dye |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3539980A JPS56131669A (en) | 1980-03-18 | 1980-03-18 | Production of highly concentrated solution of metal complex dye |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56131669A true JPS56131669A (en) | 1981-10-15 |
Family
ID=12440830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3539980A Pending JPS56131669A (en) | 1980-03-18 | 1980-03-18 | Production of highly concentrated solution of metal complex dye |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56131669A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173203A (en) * | 1985-01-28 | 1986-08-04 | Sumitomo Chem Co Ltd | Production of color filter |
-
1980
- 1980-03-18 JP JP3539980A patent/JPS56131669A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173203A (en) * | 1985-01-28 | 1986-08-04 | Sumitomo Chem Co Ltd | Production of color filter |
JPH041322B2 (en) * | 1985-01-28 | 1992-01-10 | Sumitomo Chemical Co |
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