PHOTONIC PARTICLES; COMPOSITIONS CONTAINING THEM; METHODS OF PHOTOPROTECTING VARIOUS MATERIALS

摘要

The present invention provides photonic particles (1) with a mean size in the range 1 µm to 500 µm, in particular in the range 1 µm to 300 µm, comprising a diffracting arrangement of hollow nanoparticles (10), as well as compositions containing a dispersion of said particles. The present invention also provides a method of photo protecting human keratins material against solar UV radiation. The present invention also provides methods of photo protecting industrial materials such as paints, inks, coatings, materials manufactured from polymers, or fibrous materials such as textiles, papers, or organic or mineral glasses.