REACTIVE DYE MIXTURE FOR LOW-SALT DYEING METHOD

• Main Authors: REIHER UWE, KUNZ MARTIN, PEDEMONTE RONALD, SCHUMACHER CHRISTIAN DR, EICHHORN JOACHIM
• Format: Patent
• Language: English
• Published: 12.12.2000
• Edition: 7
• Subjects: ADHESIVES; CHEMISTRY; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM; DYEING OR PRINTING TEXTILES; DYES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAKES; LAUNDERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; PAINTS; POLISHES; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE

PROBLEM TO BE SOLVED: To obtain a reactive dye which gives strong dyeing while using a very small amount of a salt or without using a salt at all by mixing at least two kinds of dyes selected from specific kinds of disazo dyes. SOLUTION: At least two kinds of dyes selected from three kinds of dyes represented by formulas I, II, and III are mixed. In the formulas, D1 is a benzene or naphthalene ring having at least one sulfo group; R1 is methyl or amino; R2 is H or Cl; Hal is F or Cl; M is H or an alkali metal; D2 to D4 are each a group represented by formula IV; R3 and R4 are each H, methyl, ethyl, methoxy, ethoxy, sulfo, or carboxy; Z is CH=CH2 or CH2CH2Z1; and Z1 is an alkali-separable group, In the case of a mixture of two kinds of dyes, i.e., in the case of a mixture containing dyes of formulas I and II, or dyes of formulas II and III, or dyes of formulas I and III, at least one dye per each respective kind is incoporated, and the content of each kind of dyes in the mixture is 10-90 wt.%, preferably 30-70 wt.%.