New dyeing process

Claim 1

PROCESS FOR DYEING NATURAL AND REGENERATED PROTEIN TEXTILE MATERIALS WITH A WATER-SOLUBLE DYESTUFF OF THE CLASS CONSISTING OF AZO, NITRO, ANTHRAQUINONE, AND PHTHALOCYANINE, AND WHICH CONTAIN AN ACRYLOYLAMINO GROUP ATTACHED TO A CARBON ATOM OF THE DYESTUFF, WHICH PROCESS COMPRISES TREATING THE TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING, AS ESSENTIALY INGREDIENTS, SAID DYESTUFF AND A MEMBER SELECTED FROM THE CLASS CONSISTING OF ACIDS AND ACID SALTS IN SUFFICIENT AMOUNT SO THAT THE PH OF THE SOLUTION IS LESS THAN 7, HEATING THE SOLUTION WHILE SAID TEXTILE MATERIAL IS TREATED THEREWITH, THEREAFTER ADDING A MATERIAL SELECTED FROM THE CLASS CONSISTING OF ALKALIS, ALKALINE SALTS, AND SALTS WHICH BECOME ALKALINE ON HEATING, IN SUFFICIENT QUANTITY SO THAT THE PH OF THE SOLUTION IS RAISED TO A LEVEL OF ABOUT 4.5 TO 8, AND THEN CONTINUING HEATING SAID SOLUTION UNTIL THE DYEING IS COMPLETED.