Use of isotactic polypropylene having very high fluidity for preparing filler concentrates usable in olefin-type thermoplastics, filler concentrates and thermoplastics so obtained

The invention relates to is connected with the liquid isotactic is provided with a construct polypropylene is for preparing can be used based on comprising or produced from comprises 2 to 6 carbon atoms styrene monomer a is thermoplastics of the mixture of polymerizing, a polypropylene and polyethylene (are generally the polymer is single or mixture of) is the use of the stuffing. The invention further relates to very high fluidity isotactic outside of the polypropylene for preparing the filling the or the substrate material. The invention further relates by adding to be according to the thermoplastic filling material is invention from the polypropylene, obtained by the thermoplastic materials or a thermoplastic material manufactured product.