LEUCOINDIGO SALT SOLUTION WITH VERY LOW CONTENT OF ANILINE AND METHOD OF MAKING SAME

Aqueous leucoindigo solution comprising an aromatic amine, in particular aniline or aniline and N-methylaniline, wherein the concentration of the aromatic amine is below 200 ppm, wherein the leucoindigo salt in the solution is in the form of a mixed sodium and potassium salt, wherein the molar ratio...

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Hauptverfasser: RIJKERS, Marinus Petrus Wilhelmus Maria, BESSEMBINDER, Karin Hendrika Maria, HYETT, David, LUCIC, Erwin, JANSSEN, Michèle Catherine Christianne, WOESTENBORGHS, Pierre L, HÜBNER, Jörg
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Sprache:eng
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Zusammenfassung:Aqueous leucoindigo solution comprising an aromatic amine, in particular aniline or aniline and N-methylaniline, wherein the concentration of the aromatic amine is below 200 ppm, wherein the leucoindigo salt in the solution is in the form of a mixed sodium and potassium salt, wherein the molar ratio of sodium to potassium is in the range of from above 3:1 to 10:1, preferably wherein the concentration of the salt is in the range of from above 25 to 45% by weight, based on the total weight of the solution.