C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 29/30 (2006.01) C09B 29/01 (2006.01) C09B 67/22 (2006.01) D06P 3/04 (2006.01) D06P 3/16 (2006.01) D06P 3/24 (2006.01)
Patent
CA 2138085
A process for dyeing or printing natural or synthetic polyamide fibre material by the trichromatic technique which comprises using a dye mixture of at least two yellow- or orange-dyeing dyes of formula (1) Image (1), wherein R1 is hydrogen, C1-C4alkyl, C1-C4alkoxy or halogen, and X is hydrogen or C1-C4alkyl; together with at least one red-dyeing dye of formulae (2) and (3) Image (2), Image (3), wherein R2 is C1-C6alkyl, phenyl or cyclohexyl and R3 is C1-C6alkyl, or wherein R2 and R3, together with the linking nitrogen atom, form an azepinyl ring, and R4 is hydrogen, C2-C4alkanoylamino or halogen; and together with at least one of the blue-dyeing dyes of formulae (4) and (5) Image (4), Image (5), wherein R5 is hydrogen or C1-C4alkyl, R6 is C1-C4alkyl or amino, R7 is hydrogen or methyl, and R8 is a C2-4hydroxyalkylsulfamoyl radical. The process of this invention is suitable for dyeing natural or synthetic polyamide fibre materials from an aqueous liquor or for printing with printing pastes.
Adam Jean-Marie
Jordine Guido
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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