Particles functionalised absorbing the radiation ultra - violet and their method of preparation

摘要

The functionalized particles of ultra - violet radiation, the particles being into polyurea and being functionalized covalently with an organic compound which absorbs the radiation ultra - violet, preferably chosen from among the substituted benzotriazoles, benzophenones substituted, such as the hydroxybenzophenones, the hydroxybenzoates and their derivatives, porphyrines substituted, the phthalocyanines substituted, pyrene substituted, bis (2,2,6,6 - tetramethyl - 4 - piperidyl) sebacate, the ester hexylic acid of the acid (2 - 4 - diethylamino - 2 - hydroxybenzoyl) benzoic, and mixtures thereof.