Part II: Formaldehyde-Curing after Amidoximation

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Abstract
By amidoximation with the aqueous hydroxylamine and subsequent formaldehyde-curing in the presence of a weak acid catalyst such as ammonium acetate or even in the absence of catalyst, the crease resistance of cyanoethylated cotton fabrics containing a low percentage of nitrogen was improved significantly without much loss in the tensile strength and elongation, but a decrease in the flex abrasion and tear strength occurred. From the results, it was deduced that the longer cross link chain might be formed to some extent between adjacent amidoxime or hydroxamic acid groups in different cellulose molecules. After curing, the amidoximates retain great affinities for acid dyes and have a wool-like hand.

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