Luminescent cellulose synthetic fiber and method for the production thereof

Abstract

The invention relates to a high-strength luminescent cellulose synthetic fiber, which is produced by means of spin dyeing with a luminescent pigment and a dulling pigment.

1 . A luminescent regenerated cellulose fiber containing at least one pigment incorporated during spinning, characterized in that the pigment incorporated during spinning is a luminescent pigment, in particular an organic luminescent pigment, and that the fiber contains additionally a dulling pigment incorporated during spinning 
     
     
         2 . The luminescent regenerated cellulose fiber according to  claim 1 , characterized in that the luminescent pigment is a fluorescent pigment. 
     
     
         3 . The luminescent regenerated cellulose fiber according to  claim 1 , characterized in that the fiber contains a flame-retardant incorporated during spinning 
     
     
         4 . The luminescent regenerated cellulose fiber according to  claim 3 , characterized in that the flame-retardant is a dulling pigment. 
     
     
         5 . The luminescent regenerated cellulose fiber according to  claim 3 , characterized in that its LOI value is at least 24. 
     
     
         6 . The luminescent regenerated cellulose fiber according to  claim 3 , characterized in that the dulling pigment is an organophosphoric compound, in particular with a phosphorus oxidation number from +III to +V. 
     
     
         7 . The luminescent regenerated cellulose fiber according to  claim 1 , characterized in that the total pigment content is no more than 28%. 
     
     
         8 . The luminescent regenerated cellulose fiber according to  claim 1 , characterized in that the fiber is equipped with hydrophobizing. 
     
     
         9 . The luminescent regenerated cellulose fiber according to  claim 1 , characterized in that its breaking strength at least 3 cN/tex. 
     
     
         10 . A process for producing a luminescent regenerated cellulose fiber, comprising:
 admixing at least one pigment to a spinning mass, and   spinning a fiber from a mixture comprising the admixed pigment and the spinning mass, characterized in that the admixed pigment is a luminescent pigment and wherein the process further includes additionally admixing a dulling pigment.   
     
     
         11 . The process according to  claim 10 , characterized in that the viscose content of the spinning mass is in the range of 3% to 9%. 
     
     
         12 . The process according to  claim 10 , characterized in that the mean particle size of the pigments is no more than 10 μm. 
     
     
         13 . The process according to  claim 10 , characterized in that the α-cellulose content of the spinning mass is at least 90%. 
     
     
         14 . The process according to  claim 10 , characterized in that the pigment content in the fiber is no more than 28%. 
     
     
         15 . The luminescent regenerated cellulose fiber of  claim 1 , wherein the regenerated fiber is included in a textile yarn. 
     
     
         16 . The luminescent regenerated cellulose fiber of claim wherein the fiber is included in a textile fabric. 
     
     
         17 . The luminescent regenerated cellulose fiber of  claim 16 , wherein the textile fabric complies with standard EN 471. 
     
     
         18 . The luminescent regenerated cellulose fiber of  claim 16 , wherein the textile fabric is characterized in that its abrasion resistance according to Martindale is at least 20,000 cycles (a 9 kPa). 
     
     
         19 . The luminescent regenerated cellulose fiber of  claim 16 , wherein the textile fabric is used for manufacturing a warning garment or warning textile.