CONCENTRATED LEUCOINDIGO SOLUTIONS
Concentrated leuco indigo solutions useful for dyeing cellulosic textile material consist essentially of from 25 to 55% by weight of leuco indigo in the form of the leuco indigo salt, an amount which is essentially stoichiometrically sufficient to convert the leuco indigo into the neutral leuco indi...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
27.03.2002
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | Concentrated leuco indigo solutions useful for dyeing cellulosic textile material consist essentially of from 25 to 55% by weight of leuco indigo in the form of the leuco indigo salt, an amount which is essentially stoichiometrically sufficient to convert the leuco indigo into the neutral leuco indigo salt of a mixture of at least two alkali metal hydroxides wherein none of the alkali metal hydroxides accounts for more than 70 mol %, and water. |
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Bibliography: | Application Number: EP19990932787 |