POLYPROPYLENE COMPOSITION WITH EXCELLENT PAINT ADHESION

• Main Authors: SHUTOV PAVEL, MILEVA DANIELA, KNIESEL CLAUDIA, PRADES FLORAN, KAHLEN SUSANNE
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to a polypropylene composition (C) comprising: (i) 62 to 85 wt%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO1) with a melt flow rate MFR (230 DEG C) measured according to ISO 1133 in the range of 6.0 to 50.0g/10min; (ii) 10 to 30 wt%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO2) with a melt flow rate MFR (230 DEG C) measured according to ISO 1133 in the range of 0.1 to 5.5g/10min; (iii) 5 to 30 wt%, based on the total weight of the polypropylene composition (C), of an inorganic filler (F); wherein (a) the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO1) has a lower amount [in mol%] of C and/or C to C alpha-olefin derived comonomer units than the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO2); (b) the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO1) has a lowe