PROCESS FOR THE PREPARATION OF CONCENTRATED SOLUTIONS OF CATIONIC DYES
Concentrated solutions of cationic dyes are prepared by treating the cationic dyes, which contain as the counterions the anions customarily present during their preparation, with alkali metal salts of monocarboxylic acids and with or without complexing agents in an aqueous glycol ether medium, and s...
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Main Authors | , , |
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Format | Patent |
Language | English Korean |
Published |
05.06.1997
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | Concentrated solutions of cationic dyes are prepared by treating the cationic dyes, which contain as the counterions the anions customarily present during their preparation, with alkali metal salts of monocarboxylic acids and with or without complexing agents in an aqueous glycol ether medium, and separating off the organic phase, which contains the dyes in the form of their monocarboxylic acid salts. |
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Bibliography: | Application Number: KR19890014022 |