Fluorescent fiber, its use and processes for its production

Abstract

The present invention relates to a regenerated cellulosic fiber which contains an incorporated dye pigment and a fluorescent dye applied by overdying, the use of this fiber for the production of yarns and fabrics and a process for the production of these fibers. This fiber satisfies the demands of EN 471 in relation to luminance factor, the chromaticity coordinates and color fastness and possesses a light fastness (ISO 105-B02, process 2) of more than 5.

1 .- 12 . (canceled) 
     
     
         13 . A cellulosic regenerated fiber, comprising a spun-in pigment and a fluorescent dye applied by overdyeing, and having a lightfastness greater than 5, measured according to ISO 105-B02, Method 2. 
     
     
         14 . The cellulosic regenerated fiber as claimed in claim  1 , which is produced using a viscose, modal or lyocell process. 
     
     
         15 . The cellulosic regenerated fiber as claimed in claim  1 , further comprising a flame retardant. 
     
     
         16 . The cellulosic regenerated fiber as claimed in claim  3 , wherein the flame retardant is a spun-in organophosphorus compound (preferably 2,2′-oxybis[5,5-dimethyl-1,3,2-dioxaphosphorinane]2,2′disulfide). 
     
     
         17 . The cellulosic regenerated fiber as claimed in claim  1 , further comprising one or several antibacterial agents. 
     
     
         18 . A use of the fibers as claimed in claims  1  to  5  for the production of a yarn. 
     
     
         19 . A use of the fibers as claimed in claims  1  to  5  for the production of a fabric. 
     
     
         20 . A use of the fibers as claimed in claims  1  to  5  for the production of high-visibility clothing or other high-visibility articles.