Combination of wool protein with acids in mixtures, and its relation to the acid dyeing of wool

Abstract

In order to extend previously reported analyses of the combination of acids with wool, measurements have been made over a wide range of concentrations, of the amounts of the anions of two a.cids combined by wool fibers when acios of different affinity for prot.ein are present in different proportions or in mixt.ures of their acid and salt forms . It is shown that anions compet.e with one another for combination with the fiber, so that the amounts of each combined depend not only on the amounts init ially present but also on their respective affinities for wool. The bearing of these results and their interpretation on the theory of acid dyeing is discussed, with special reference to the factors promoting the attainment of "level" or "solid" application of dye to the fibers , CONTENTS