PROCESS FOR MAKING A MODIFIED FIBER MATERIAL AND PROCESS FOR DYING THE MODIFIED FIBER MATERIAL WITH ANIONIC DYESTUFFS

摘要

The present invention particularly discloses a method of dyeing fiber materials with water-soluble anionic dyes having fiber-reactive groups. According to this method of the invention, the dyeing is carried out using a dye solution (saline solution, printing paste) containing little or no electrolyte and / or little or no alkali. At this time, the fiber may be unsubstituted or substituted with one or more hydroxy groups, and a saturated straight chain containing at least one primary, secondary or tertiary amino group or quaternary ammonium group and at least one hydrolysable ester group. Or a fibrous material modified by branched aliphatic compounds, wherein the aliphatic radicals of the saturated compounds may be interrupted by one or more hetero groups. Modification of the fibrous material is carried out by applying the above-mentioned compounds containing amino and ester groups to the fibrous material in an aqueous solution and heat treating the impregnated fibrous material. Also disclosed are some novel aliphatic compounds containing amino and ester groups that can be used to modify the fibrous material.