Process for dyeing fiber material made of natural polyamides with anionic wool dyes at pH 4.5 to 5.5 in the presence of a dyeing assistant

US4444564A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Heinz Salathe · Bretzwil, CH
• Hermann Flensberg · Weil am Rhein, DE
• Harry Schaetzer · Wehr, DE

Key dates

• Filing date: Mar 11, 1983
• Grant date: Apr 24, 1984
• Expiry date: Mar 11, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/917
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for the non-skittery and level dyeing of fibre material made of natural polyamides, with dyes or mixtures of dyes in the presence of a mixture of dyeing assistants, which comprises using for dyeing these materials an aqueous liquor which contains at least one anionic wool dye which, under the defined dyeing conditions at 1/1 standard depth, exhausts to at least 95%, and a dyeing assistant mixture containing an anionic compound of the formula ##STR1## in which R is an alkyl or alkenyl radical having 12 to 22 carbon atoms, M is hydrogen, an alkali metal or ammonium, and m and n are integers such that the sum of m and n is 2 to 14, a quaternary compound of the formula ##STR2## in which R', independently of R, is what R has been defined as, A is an anion, Q is a substituted or unsubstituted alkyl radical, and p and q are integers such that the sum of p and q is 20 to 50 , and a non-ionic compound of the formula ##STR3## in which R", independently of R, is what R has been defined as, and x and y are integers such that the sum of x and y is 80 to 140, and which liquor can, if desired, also contain an ammonium or alkali metal salt, and finishing the dyei…