PARTICULES COMPOSITES POLYMERE ORGANIQUE-CARBONATE DE CALCIUM, PARTICULES CREUSES DE CARBONATE DE CALCIUM, LEURS PROCEDES DE PREPARATION, LEUR UTILISATION COMME CHARGES OU ADDITIFS DANS LES PLASTIQUES ET LES ELASTOMERES.

摘要

Composite particles comprise a core of organic polymer coated at least partially with calcium carbonate and having a mean dia. of at most 5 mu m. Also claimed are hollow particles with a mean dia. of at most 5 mu m and with a calcium carbonate shell.