METHOD OF TREATING TEXTILE PRODUCT CONTAINING HIGHLY CROSSLINKED ACRYLIC POLYMER FIBER BEFORE DYEING, METHOD OF DYEING THE TEXTILE PRODUCT, TEXTILE PRODUCT TREATED BEFORE DYEING, AND TEXTILE PRODUCT

摘要

In fiber products (e.g. yarns, woven fabrics, knit fabrics) comprising highly crosslinked polyacrylic fibers (made of acrylic fibers by partially hydrolyzing a nitrile group to generate an amido group and a carboxylic acid group), fibers blended with the highly crosslinked polyacrylic fibers can be dyed in an even hue. A pre-dyeing treatment process for such fiber products (e.g. yarns, woven fabrics, knit fabrics) comprising highly crosslinked polyacrylic fibers comprises a pretreatment step of immersing the fiber product into an acidic solution and treating it at a high temperature and an elevated pressure. A dyeing process comprises the steps of conducting this pre-dyeing treatment process, and thereafter conventionally dyeing fibers which are blended with the highly crosslinked polyacrylic fibers. A pretreated fiber product and a fiber product are obtained by the pre-dyeing treatment process and the dyeing process mentioned above.