AGENT FOR DISSOLVING INSOLUBLE IRON(III) COMPOUNDS IN HIGHLY ALKALINE TEXTILE TREATMENT LIQUORS

摘要

An agent, based on reducing agents and complexing agents, for dissolving insoluble iron(III) compounds in aqueous textile treatment baths which are at a pH of 10 or more, which agent has the following composition: a) from 4 to 65% by weight of one or more watersoluble hydroxycarbonyl compound or of an N- or O-acetal thereof, as the reducing agent, b) from 10 to 80% by weight of one or more complexing agent which complexes Fe++ ions at a pH of 10 or more and c) water in an amount equal to 100% minus the amounts of a) and b).