0 2 wt wetaid nrw b f goodrich and 1 wt nacl padded and dried for 15 min at 180 u00b0 c even after multiple home launderings the color of this fabric remained black and dark while that of the control only the dye application in the first step lost its color rapidly 1 weight direct black 19 used as received from dintex dyechem ltd india and 0 2 wt wetaid nrw b f goodrich were padded onto cotton twill and then dried for 10 min at 180 u00b0 c the fabric was then dipped in an aqueous solution of 5 wt diglycidyl peg 1000 mw 0 2 wt wetaid nrw b f goodrich and 1 wt nacl padded and dried for 15 min at 180 u00b0 c even after multiple home launderings the color of this fabric remained black and dark while that of the control only the dye application in the first step lost its color rapidly 1 weight direct black 19 used as received from dintex dyechem ltd india and 0 2 wt wetaid nrw b f goodrich were padded onto cotton twill and then dried for 10 min at 180 u00b0 c the fabric was then dipped in an aqueous solution of 5 wt diglycidyl peg 1000 mw 0 2 wt wetaid nrw b f goodrich and 3 wt nacl padded and dried for 15 min at 180 u00b0 c even after multiple home launderings the color of this.