COMPOSITION OF REINFORCED POLYPROPYLENE (PP) WITH IMPROVED THERMOMECHANICAL PROPERTIES

摘要

FIELD: car industry.;SUBSTANCE: invention relates to a composition of polypropylene (PP) intended for the manufacture of products for the car industry and containing: a) from 50.0 to 95.0 wt. % of polypropylene (PP) homopolymer polymerized in the presence of a catalyst with a single polymerization center on metal, from the total mass of the polypropylene (PP) composition, characterized by a melt flow rate MFR2 (230°C), as measured according to ISO 1133, in the range from 1 to 200 g/10 minutes, a melting temperature, as measured using differential scanning calorimetry (DSC), which is higher than or equal to 153°C, the content of erythro-regiodefects, as determined using 13C-NMR spectroscopy, ranging from 0.10 to 1.00 mol.; and b) from 5.0 to 50.0 wt. % of a mineral filler from the total mass of the polypropylene (PP) composition, as well as to a product containing the polypropylene (PP) composition, and to the use of the polypropylene (PP) composition for the manufacture of parts for the car industry. ;EFFECT: products made from the composition according to the invention are characterized by increased rigidity and high thermal stability.;13 cl, 4 tbl