Improvement of light fastness of colored polyester with an o-hydroxyphenyl-s-triazine compound

In order to improve the light fastness of colored polyester fabrics,2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-s-triazine(simply named as UV-Abs in this paper) with an o-hydroxyphenyl-s-triazine group in the molecule was prepared,which has the performance of a UV-absorber.The UV-Abs was dyed onto polyester fabric with high temperature and high pressure process.The effects of the UV-Abs on the dyeing property and improvement of light fastness of the polyester fabrics were investigated.The results showed that the UV-absorber has a relative high uptake rate on polyester under high temperature and high pressure conditions.The ultraviolet protections of the polyester fabrics dyed either with UV-Abs alone or together with disperse dyes were obviously improved.The yellowing of the polyester fabrics dyed with UV-Abs alone declined.The dyeing of UV-Abs with disperse dyes in one bath could improve the light fastness of polyester fabrics in a certain extent.