Flame-retardant fabric having high visibility

Abstract

Provided is a flame-retardant fabric having a color that satisfies the criteria required by the international standard for high visibility ISO20471. The fabric includes polyetherimide-based fibers that contain a white pigment.

What is claimed is: 
     
         1 . A flame-retardant fabric comprising polyetherimide-based fibers containing a white pigment, the fabric having a color that satisfies the criteria required by the international standard for high visibility ISO20471. 
     
     
         2 . The flame-retardant fabric according to  claim 1 , wherein the fabric after dyeing has a color that has CIE chromaticity coordinates (x, y) within a color space delimited by (0.624, 0.374), (0.589, 0.366), (0.609, 0.343) and (0.655, 0.345), and a luminosity coefficient β equal to or greater than 0.40. 
     
     
         3 . The flame-retardant fabric according to  claim 1 , wherein the fabric after dyeing has a color that has CIE chromaticity coordinates (x, y) within a color space delimited by (0.450, 0.549), (0.420, 0.483), (0.375, 0.528) and (0.395, 0.602), and a luminosity coefficient β equal to or greater than 0.70. 
     
     
         4 . The flame-retardant fabric according to  claim 1 , wherein the fabric comprises polyetherimide-based fibers having a fiber tenacity retention rate of 65% or higher. 
     
     
         5 . The flame-retardant fabric according to  claim 1 , wherein the polyetherimide-fiber contains the white pigment at a concentration of 0.5 to 5.0% owf. 
     
     
         6 . A method for producing a polyetherimide-based fiber, the method comprising dyeing a polyetherimide-based fiber containing a white pigment at a temperature from 100° C. to 125° C. to give the fiber a color that satisfies the criteria required by the international standard for high visibility ISO20471. 
     
     
         7 . The method according to  claim 6 , wherein the given fiber satisfies a fiber tenacity retention rate of 65% or higher.