FILLED POLYOLEFIN COMPOSITIONS

摘要

Filled polyolefin compositions comprising: A) from 15% to 55% by weight of a polypropylene component; B) from 20% to 80% by weight of a filler; C) from 4% to 25% of an elastomeric polymer or polymer composition; wherein the percentages of A), B) and C) are referred to the sum of A) B) and C), and A) is selected from the following compositions: a) a polypropylene composition containing from 20% to 80% by weight of a polypropylene fraction A<SUP>I</SUP>) having a Melt Flow Rate L (MFR<SUP>I</SUP>) value of 500 g/ 10 min. or more, and from 20% to 80% by weight of a polypropylene fraction A<SUP>II</SUP>) having a Melt Flow Rate L (MFR<SUP>II</SUP>) value of from 0.1 to 30 g/10 min., the said percentages of A<SUP>I</SUP>) and A<SUP>II</SUP>) being referred to the sum of A<SUP>I</SUP>) and A<SUP>II</SUP>); or b) a polypropylene composition containing from 15% to 72% by weight of a polypropylene fraction A<SUP>I</SUP>) having a Melt Flow Rate L (MFR<SUP>I</SUP>) value of 500 g/10 min. or more, from 15% to 70% by weight of a polypropylene fraction A<SUP>II</SUP>) having a Melt Flow Rate L (MFR<SUP>II</SUP>) value of from 0.1 to 30 g/10 min. and from 0.5% to 15% by weight of a compatibilizer Q), the said percentages of A<SUP>I</SUP>), A<SUP>II</SUP>) and Q) being referred to the sum of A<SUP>I</SUP>), A<SUP>II</SUP>) and Q).