PROCESS FOR COLOURING ELEMENTS MADE OF POLYMERIC MATERIAL, IN PARTICULAR YARNS SELECTIVELY PRODUCED IN POLYETHYLENE (PE), IN ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE (UHMW-PE) ANDDERIVATIVES THEREOF SUCH AS HSHM-PE

摘要

There is described a process for colouringelements made of polymeric material, in particular yarnsproduced selectively in polyethylene (PE), in ultra highmolecular weight polyethylene (UHMW-PE) and derivativesthereof, such as HSHM-PE, comprising a step of immersingthe elements (10) in a liquid colourant (1) comprisingat least: water (2); pigments (3) chosen from anthraquinonecolorants, azo colorants and inks for the textileindustry; and additives (4) comprising at least anequalizing agent (6) and a dispersing agent (7); the immersionstep being performed at a temperature between 500Cand 2200C.