Masterbatches or concentrates of mineral fiiler, method their preparation and their use

摘要

It is described isotactic polypropylenes with high fluidity for preparing filler concentrates for use in olefin-type thermoplastic such as polypropylene, polyethylene and generally polymers used alone or in mixture, based on polymerised ethylene monomers containing 2 to 6 carbon atoms. It is also described filler mixtures containing filler concentrates or masterbatches prepared from very high fluidity isotactic popypropylenes.