Patent ID: 6821304
Filing Date: 2004-11-23
Classification: D01F,Y10S,Y10T

Abstract:
Colored cellulose products which are obtained by the steps ofadding and mixing 0.5-3.0% by weight of a grounding agent of naphthol dye into a polynosic viscose solution said weight of grounding agent based on the weight of cellulose in the polynosic viscose solution; said grounding agent of naphthol dye being selected from the group having a medium to high level of affinity to the regenerated cellulose fiber; extruding the polynosic viscose solution into a spinning bath to produce a modified regenerated cellulose fiber containing the grounder of naphthol dye therein; mixing or knitting/weaving the modified regenerated cellulose fiber containing a grounder of naphthol dye with other cellulose-based fiber, and then dyeing the mixture of the cellulose fibers by using a diazo component as a developer of naphthol dye.