PROCESS FOR PRODUCING A COMPOSITE MATERIAL FOR DECORATIVE ARTICLES AND COMPOSITE MATERIAL OBTAINED BY MEANS OF SUCH PROCESS

摘要

Process for producing a composite material for decorative articles, which comprises: - a step for arranging a polymer material having a transmission of the light radiation in the visible spectrum equal to at least 70%; - at least one step for synthesizing a metal powder of a precious metal from a solution comprising at least one compound of the precious metal, at least one reducing agent and at least one selector agent for the crystallographic growth, wherein the solution is an at least 0.01 molar solution of the precious metal and the metal powder is formed for at least 60% by weight by plate-like metal particles having preferred extension on a two-dimensional surface with at least one dimension comprised between 0.8 and 75 μπι and having thickness equal to at least 500 nm; - a step for adding a dose of metal powder in a percentage by weight comprised in the interval between 2 and 90% to a dose of the polymer material in a percentage by weight comprised in the interval between 10 and 92%; - a step for closely mixing the dose of polymer material and the dose of metal powder at the end of which the metal powder is dispersed in the polymer material in a substantially uniform manner; and - a step for cross-linking the dose of polymer material with the dose of metal powder distributed substantially uniformly therein. Also forming the object of the present invention is a composite material, in particular obtained by means of the above-reported process.