Swf ci

Claim 1

IN A PROCESS FOR OBTAINING NOVEL MULTICOLOR EFFECTS IN WOOL IN A SINGLE DYEBATH WHICH COMPRISES THE STEP OF DYEING A MIXTURE OF WOOL, CONSISTING ESSENTIALLY OF A MIXTURE OF NORMAL WOOL HAVING NORMAL DYEING PROPERTIES AND OF WOOL PRETREATED TO ENHANCE ITS RECEPTIVITY TO DYESTUFFS, IN AN AQUEOUS DYEBATH CONTAINING (A) A DYESTUFF CONTAINING A TOTAL OF AT LEAST 3 SULFONIC AICD AND REACTIVE GROUPS, (B) A DYESTUFF CONTAINING A TOTAL OF LESS THAN 2 SULFONIC ACID AND REACTIVE GROUPS, AND (C) AN AMOUNT, GREATER THAN 0.5 PERCENT CALCULATED ON THE WEIGHT OF THE WOOL, WHICH IS INSUFFICIENT TO RESERVE THE DYESTUFF, OF A WATER-SOLUBLE CONDENSATION PRODUCT OF AN ARYL SULFONIC ACID AND AN ALDONE, AT AN INITIAL DYEBATH PH IN THE PRESENCE OF THE WOOL OF LESS THAN 5, THE IMPROVEMENT WHICH COMPRISES USING AS THE WOOL HAVING ENCHANCED RECEPTIVITY TO DYESTUFFS, WOOL TREATED WITH AN AQUEOUS DISPERSION OF CALCIUM HYDROXIDE AT A PH ABOVE 9.5 BUT BELOW 12 AT A TEMPERATURE FROM 110* TO 180*F. FOR LESS THAN 15 MINUTES, UNDER CONDITIONS WHEREBY THE SCALE STRUCTURE OF THE FIBERS IS RETAINED IN A SUBSTANTIALLY UNDAMAGED CONDITION AND THE FIBERS HAVE A DRY TENSILE STRENGTH AND AN ELONGATION WHICH ARE AT LEAST ABOUT AS HIGH AS CORRESPONDING UNTREATED WOOL.