METHOD AND DEVICE FOR MAKING ANILINE-FREE LEUCOINDIGO SALT SOLUTIONS

Method of making an aqueous aniline-free or aniline-free and N-methylaniline-free leucoindigo solution from an aqueous leucoindigo solution comprising aniline or aniline and N-methylaniline, the concentration of aniline or aniline and N-methylaniline being determined according to ISO 14362-1:2017(E)...

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Bibliographische Detailangaben
Hauptverfasser:	RIJKERS, Marinus Petrus Wilhelmus Maria, BESSEMBINDER, Karin Hendrika Maria, HÜBNER, Jorg, HYETT, David, LUCIC, Erwin, JANSSEN, Michèle Catherine Christianne, WOESTENBORGHS, Pierre L
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMISTRY DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM DYEING OR PRINTING TEXTILES DYES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAKES LAUNDERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES SEPARATION TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE
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Beschreibung
Zusammenfassung:	Method of making an aqueous aniline-free or aniline-free and N-methylaniline-free leucoindigo solution from an aqueous leucoindigo solution comprising aniline or aniline and N-methylaniline, the concentration of aniline or aniline and N-methylaniline being determined according to ISO 14362-1:2017(E), wherein said leucoindigo is in the form of an alkali metal salt, the method comprising at least steps (A) to (C):(A) providing a liquid stream comprising said aqueous leucoindigo solution comprising said amine(s);(B) providing a purification stream;(C) bringing into contact said liquid stream with said purification stream.