AQUEOUS ALKALINE SOLUTION AND USE OF THE AQUEOUS SOLUTION IN PROCESS FOR DYEING CELLULOSIC FIBER MATERIAL

PROBLEM TO BE SOLVED: To provide an aqueous alkaline composition capable of being added to a solution containing fiber-reactive dyes, improving the stability of a padding solution, and not so much increasing a time for fixing the dyes to fibers. SOLUTION: This aqueous alkaline composition contains s...

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Bibliographic Details
Main Authors NEGRI DANIELE, SCHRELL ANDREAS DR
Format Patent
LanguageEnglish
Published 16.11.1999
Edition6
Subjects
DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM
DYEING OR PRINTING TEXTILES
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
LAUNDERING
TEXTILES
TREATMENT OF TEXTILES OR THE LIKE
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Summary:PROBLEM TO BE SOLVED: To provide an aqueous alkaline composition capable of being added to a solution containing fiber-reactive dyes, improving the stability of a padding solution, and not so much increasing a time for fixing the dyes to fibers. SOLUTION: This aqueous alkaline composition contains sodium hydroxide and potassium carbonate in a molar ratio of 1:1.7 to 1:0.5. The method for using the aqueous alkaline solution comprises mixing the aqueous alkaline composition with an aqueous solution containing one or more fiber-reactive dyes, impregnating cellulosic fiber materials with the obtained alkali-dye mixed dyeing solution by a conventional method, and finally fixing the above fiber- reactive dyes to the fiber materials under ordinary process conditions for the fiber-reactive dyes. Since the alkaline composition can be easily mixed and dissolved in the dye-containing solution in a small amount and even by few steps to form a padding solution, the dyeing procedures can be easily and continuously accomplished by the use of the composition.
Bibliography:Application Number: JP19990056058