This invention relates to products of aqueous and other chemical synthetic routes for encapsulation of a core material with an inorganic shell and finished compositions of a core-shell
particulate material for application in
thermoplastic, thermoset, and coatings resins prior to compounding or application or subsequent thermal
processing steps. Disclosed is a composition of particles containing a shell of inorganic oxides or mixed-
metal inorganic oxides and a core material of complex inorganic
colored pigment,
laser direct structuring additives,
laser marking, or other beneficial
metal oxides,
metal compounds, or mixed-metal
oxide materials, wherein the shell material is comprised of any single
oxide or combination of oxides is taught. Preferred elements of composition for the shell are oxides and silicates of B, Ni, Zn, Al, Zr, Si, Sn, Bi, W, Mo, Cr, Mg, Mn, Ce, Ti, and Ba (or mixtures thereof). Applications may include, but are not limited to, coatings or plastic articles or materials for molded interconnect devices, durable goods, housings, assemblies, devices, and articles that are to be exposed to additional thermal
processing. The resulting core-shell materials function in plastic and coatings formulations by minimizing or eliminating detrimental interactions with the resins and metal containing additives resulting in loss of mechanical properties.