UTILISATION DE POLYPROPYLENES ISOTACTIQUES DE TRES GRANDE FLUIDITE POUR LA PREPARATION DE CONCENTRES DE CHARGES UTILISABLES DANS LES THERMOPLASTIQUES DE TYPE OLEFINIQUE, CONCENTRES DE CHARGES ET THERMOPLASTIQUES AINSI OBTENUS

摘要

The invention concerns the use of high fluidity isotactic polypropylenes for preparing filler concentrates for use in olefin-type thermoplastic materials such as polypropylene, polyethylene and generally: polymers used alone or in mixture, based on polymerised ethylene monomers containing 2 to 6 carbon atoms alone or in mixture. The invention also concerns filler concentrates or masterbatches prepared from very high fluidity isotactic propylenes. The invention further concerns filled thermoplastic materials obtained by addition of selected propylenes of the invention, and industrial products made from, or containing, such thermoplastic materials.