Compounds of the series of n - ammonium - alcoylanaphtalimide and their use as optical lightening

摘要

P & these compounds are represented by the general formula (i c - after and they are prepared by quaternization of the compounds of formula ii ci - after with the compounds of formula iii ci -. & / p & & p & these compounds are remarkable lightening to the optical fibers modified anionically, in particular polymers, acrylonitrile, to which they give the degree of whiteness. / p