The qualitative composition of two grades of titanium dioxide from Kronos International (Germany) was investigated by emission spectral analysis. The expediency of replacing Kronos 1074 TiO
2by Kronos 1077 for more uniform matting and higher fibre spinning stability is demonstrated. The possibility of increasing the thermal stability and light fastness of textile fibre matted with Kronos 1077 TiO
2 by additional incorporation of the antioxidant Irganox 1098 in the PA 6 melt in the spinning stage is established.