Method for the reactive coloring of leather

The present invention relates to a process for dyeing leather with at least one dye F which has at least one alkaline-activable group of the formula A; where - - - - denotes the bond to the rest of the dye molecule; X is an electron-attracting radical, k is 1, 2 or 3, n is 0 or 1 and B is a CH-CH2 g...

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Bibliographic Details
Main Authors STREICHER ROLF, ZAMPONI ANDREA, KIESOW HARALD, SOMOGYI LASZLO, ERHARDT RAINER
Format Patent
LanguageEnglish
Published 15.02.2007
Subjects
ADHESIVES
APPARATUS THEREFOR
CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING
CHEMISTRY
COMPOSITIONS FOR TANNING
DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM
DYEING OR PRINTING TEXTILES
DYES
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
HIDES
LAKES
LAUNDERING
LEATHER
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
PELTS
POLISHES
SKINS
TEXTILES
TREATMENT OF TEXTILES OR THE LIKE
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Summary:The present invention relates to a process for dyeing leather with at least one dye F which has at least one alkaline-activable group of the formula A; where - - - - denotes the bond to the rest of the dye molecule; X is an electron-attracting radical, k is 1, 2 or 3, n is 0 or 1 and B is a CH-CH2 group or a CH2-CH2-Q group, where Q is an alkaline-detachable group, which comprises treating the leather with an aqueous float comprising at least one dye F at a pH of not less than 7.5. The present invention also relates to novel dyes which are particularly useful for reactive dyeing of leather.
Bibliography:Application Number: US20040577776