Material car with excellent flow, high rigidity, excellent ductility and low coefficient of linear thermal expansion

摘要

Composition having a melt flow rate MFR2 (230 ° C) measured according to ISO 1133 located withinthe range of values ​​ranging from 10 to 50 g / 10 min., Said composition comprising a heterophasic polypropylene (H-PP1), a polypropylene heterophasic (H-PP2), plastomer (P) and a mineral filler (F), endonde (a) the heterophasic polypropylene (H-PP1) has a melt flow rate MFR2 (230 ° C) measured according to ISO1133 located within the range of values ​​of from 3.0 to 30.0 g / 10 min. and comprises (a1) a matrix (M1) is a propylene homopolymer and (a2) an elastomeric copolymer (E1) comprising units derived from - propylene and - ethylene and / or α-olefin of C4 to C20, (b) the heterophasic polypropylene (H-PP2) has a melt flow rate MFR2 (230 ° C) measured according to ISO1133 located within the range of values ​​ranging from 40.0 to 1000.0 g / 10 min. and a content of cold xylene solublesen (XCS) measured according ISO 6427 located within the range of values ​​ranging from un7,0 to 20.0% by weight and comprises (b1) a matrix (M2) which is a propylene homopolymer and (b2) an elastomeric copolymer (E2) comprising units derived from - propylene and - ethylene and / or α-olefin of C4 to C20 and (c) plastomer (P) is different from the elastomeric copolymer (E1 ) and the elastomeric copolymer (E2).