Improved Method of Red Intense color had - - Polyamide Fibers with irregularWith a colorantte consisting of an Acid / (P - 1 - amino - 4 - hydroxy - 2 - antraquinonil) oxy / - phenyl - (CO - C2) - alkyl carboxylic acid, which is achieved through a uniform, without Stretch Marks,Irregular Polyamide Fibers

摘要

1496366 Dyeing irregular synthetic polyamides MONTEDISON SpA 3 Dec 1975 [3 Dec 1974 5 Aug 1975] 49684/75 Heading D1B Irregular synthetic polyamide fibres are coloured with dyes of formula in which n is 0, 1 or 2, preferably the dye bath is buffered with borates or phosphates to start at a pH of 8.5 to 9 followed by a reduction of pH to an acidic value. Level red shades are obtained on hanks, fabrics, skeins and yarns which have good fastness to wet treatments. For pale shades dyeing is completed at pH 6 to 6.5 and for darker shades at pH 5 to 5.5.