Compositions containing a neutraldyeing premetalized dye and process of dyeing polyamides therewith

Claim 2

A LIQUID DYEING COMPOSITION FOR COLORING NITROGENOUS AND POLYAMIDE MATERIALS, SAID COMPOSITION COMPRISING (A) A METALIZED DYE FREE OF IONOGENIC GROUPS, (B) A POLYALKYLENE GLYCOL MONOALKYL ETHER, (C) A NONIONIC SURFACTANT, AND (D) WATER, SAID METALIZED DYE CONTAINING ONE ATOM OF A METAL HAVING AN ATOMIC NUMBER GREATER THAN 23 BUT LESS THAN 29, CHELATED WITH TWO MOLECULES OF A MONOAZO DYE.

Claim 3

IN THE PROCESS OF COLORING CONTINUOUS FILAMENT POLYAMIDES STRONG, LEVEL SHADES FREE OF SKITTERY AND HEATHERY EFFECTS THE STEPS COMPRISING: (1) PREWETTING THE POLYAMIDE MATERIAL IN AN AQUEOUS BATH COMPRISING ON THE WEIGHT OF THE MATERIAL TO BE COLORED (A) 0.1 TO 4.0 WEIGHT PERCENT OF A NEUTRAL-DYEING PREMETALIZED DYE DERIVED BY CHELATING ONE ATOM OF A METAL HAVING AN ATOMIC NUMBER GREATER THAN 23 BUT LESS THAN 29 WITH TWO MOLELCULES OF A MONOAXZO DYE FREE OF IONOGENIC GROUPS, (B) 0.2 TO 5.0 WEIGHT PERCENT OF A POLYALKYLENE GLYCOL MONOALKYL ETHER, AND (C) 0.1 TO 2.0 WEIGHT PERCENT OF ANONIONIC SURFACTANT, (2) ADDING TO THE AQUEOUS BATH FROM ABOUT 20 TO 35 WEIGHT PERCENT OF AN ALKALI-METAL SALT; (3) ADJUSTING THE PH OF THE AQUEOUS BATH FROM ABOUT 6.0 TO 8.5 AT AMBIENT TEMPERATURE; (4) HEATING THE AQUEOUS BATH CONTAINING THE POLYAMIDE MATERIAL TO ABOUT 195* TO 215*F. TO TRANSFER THE NEUTRAL-DYEING PREMETALIZED DYE TO THE POLYAMIDE MATERIAL; (5) SEPARATING THE COLORED MATERIAL FROM THE AQUEOUS BATH, AND (6) THEREAFTER RINSING AND DRYING THE COLORED MATERIAL.

Claim 4

IN THE PROCESS OF COLORING CONTINUOUS FILAMENT POLYAMIDES STRONG, LEVEL SHADES FREE OF SKITTERY AND HEATHERY EFFECTS THE STEPS COMPRISING: (1) PREWETTING THE POLYAMIDE MATERIAL IN AN AQUEOUS BATH COMPRISING ON THE WEIGHT OF THE MATERIAL TO BE COLORED (A) 0.1 TO 4.0 WEIGHT PERCENT OF A NEUTRAL-DYEING PREMETALIZED DYE DERIVED BY CHELATING ONE ATOM OF A METAL HAVING AN ATOMIC NUMBER GREATER THAN 23 BUT LESS THAN 29 WITH TWO MOLELCULES OF A MONOAXZO DYE FREE OF IONOGENIC GROUPS, (B) 0.2 TO 5.0 WEIGHT PERCENT OF A POLYALKYLENE GLYCOL MONOALKYL ETHER, AND (C) 0.1 TO 2.0 WEIGHT PERCENT OF ANONIONIC SURFACTANT, (2) ADDING TO THE AQUEOUS BATH FROM ABOUT 20 TO 35 WEIGHT PERCENT OF AN ALKALI-METAL SALT; (3) ADJUSTING THE PH OF THE AQUEOUS BATH FROM ABOUT 6.0 TO 8.5 AT AMBIENT TEMPERATURE; (4) HEATING THE AQUEOUS BATH CONTAINING THE POLYAMIDE MATERIAL TO ABOUT 195* TO 215*F. TO TRANSFER THE NEUTRAL-DYEING PREMETALIZED DYE TO THE POLYAMIDE MATERIAL; (5) SEPARATING THE COLORED MATERIAL FROM THE AQUEOUS BATH, AND (6) THEREAFTER RINSING AND DRYING THE COLORED MATERIAL.