Modification of cotton to improve its dyeability. Part 1 — pretreating cotton with reactive polyamide‐epichlorohydrin resin

Pretreatment of cotton with the polyamide‐epichlorohydrin resin Hercosett 125 produces a fibre that may be dyed with selected reactive dyes under neutral pH conditions in the absence of salt and with high fixation efficiency. The physical and mechanical properties of the modified cotton, the colour fastness of the reactive dyeings and mechanistic implications are also discussed.