The dyeing of polypropylene fibers in supercritical fluid.pdf
The dyeing of polypropylene fibers in supercritical fluid
YU Li-qiu, ZHANG Shu-fen∗, HE Liang, MA Wei, YANG Jin-zong
(State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116012, China)
Abstract:
Many attempts to use water dyeing polypropylene (PP) fibers have not resolved the undyeability of the fibers very successfully. Because of the success of dyeing polyester with disperser dyes in supercritical fluid many attempts to apply this technique to dyeing PP fibers have been made. This paper discusses the advantages and feasibility of dyeing PP in supercritical fluid instead of water. Approaches of dyeing PP fibers in supercritical fluid and the dyes used in supercritical fluids are also reviewed.