JPS56127665A - Preparation of highly concentrated solution of anionic dye - Google Patents

Preparation of highly concentrated solution of anionic dye

Info

Publication number
JPS56127665A
JPS56127665A JP3207580A JP3207580A JPS56127665A JP S56127665 A JPS56127665 A JP S56127665A JP 3207580 A JP3207580 A JP 3207580A JP 3207580 A JP3207580 A JP 3207580A JP S56127665 A JPS56127665 A JP S56127665A
Authority
JP
Japan
Prior art keywords
aqueous solution
solution
highly concentrated
dye
acid group
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
Application number
JP3207580A
Other languages
Japanese (ja)
Inventor
Yoshirou Izutsuya
Sadaji Abeta
Suketsugu Kofumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP3207580A priority Critical patent/JPS56127665A/en
Publication of JPS56127665A publication Critical patent/JPS56127665A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To prepare the titled highly concentrated solution having high purity and excellent storage stability, by extracting an anionic dye having sulfonic acid group, etc. in an acidic aqueous solution with a specific amine-organic solvent solution, followed by the back-extraction of the organic phase with an alkaline aqueous solution.
CONSTITUTION: An acidic aqueous solution of an anionic dye having sulfonic acid group and/or carboxylic acid group (e.g. the compound of formula I) is brought into contact with a water-insoluble organic solvent (e.g. benzene) containing a water-immiscible secondary or tertiary amine [e.g. the amines of formula II [R1 is 6W24C (aro)aliphatic group; R2 and R3 are H or 1W24C hydrocarbon provided that at least one of them is not H], e.g. laurylmethylamine]. The dye extracted to the organic phase is transferred to the aqueous phase by the back-extraction by contacting the organic phase with an alkaline aqueous solution to obtain the objective highly concentrated dye solution having high coloring power.
EFFECT: The pollution of the working environment with dust, and the problem of dissolution operation are improved.
COPYRIGHT: (C)1981,JPO&Japio
JP3207580A 1980-03-12 1980-03-12 Preparation of highly concentrated solution of anionic dye Pending JPS56127665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3207580A JPS56127665A (en) 1980-03-12 1980-03-12 Preparation of highly concentrated solution of anionic dye

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3207580A JPS56127665A (en) 1980-03-12 1980-03-12 Preparation of highly concentrated solution of anionic dye

Publications (1)

Publication Number Publication Date
JPS56127665A true JPS56127665A (en) 1981-10-06

Family

ID=12348752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3207580A Pending JPS56127665A (en) 1980-03-12 1980-03-12 Preparation of highly concentrated solution of anionic dye

Country Status (1)

Country Link
JP (1) JPS56127665A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61173203A (en) * 1985-01-28 1986-08-04 Sumitomo Chem Co Ltd Production of color filter

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
FI802123A (en) FOERFARANDE FOER BEHANDLING AV OXIDER AV SAELLSYNTA JORDMETALLER OCH GALLIUM
JPS5378230A (en) Production of anthraquinone dye
KR960017654A (en) Method for preparing 3-0-substituted ascorbic acid
JPS56127665A (en) Preparation of highly concentrated solution of anionic dye
GB1402063A (en) Polyesters containing sulphonic acid groups
JPS5681557A (en) Preparation of optically active alpha-methyl-beta- mercaptopropionic acid derivative
JPS5792511A (en) Solvent extraction of phosphoric acid
JPS53111393A (en) Preparation of alkyd resin for water dispersion
JPS55108848A (en) Preparation of sulfuric half ester compound
JPS5756451A (en) Preparation of beta-naphthalenesulfonic acid
JPS52116438A (en) Preparation of styrene sulfonic acid salts
JPS5422305A (en) Isolation of glycols
ES8106750A1 (en) Process for the preparation of concentrated solutions of metal complex dyestuffs free from sulfonic groups.
JPS5344528A (en) Separation of dihalogenobenzenes
JPS52106819A (en) Sulfonation
JPS52138527A (en) Preparation of quinophthalones
JPS5412369A (en) Preparation of thienylacetic acid
JPS5326823A (en) Preparation of 6,13-dihydroquinacridone
JPS5258796A (en) Process for preparing an aromatic polyamide
JPS5777663A (en) Preparation of 1-amino-4-bromoanthraquinone-2-sulfonic acid
GB1497812A (en) Dyestuff solutions
JPS5550473A (en) Production of ketones
JPS559013A (en) Alkylation of aromatic amine
JPS5682845A (en) Preparation of fluoran compound
JPS57139058A (en) Preparation of sulfuric half ester compound