BLENDED POLYPROPYLENE COMPOSITION

The invention relates to a process for making a blended composition, comprising the steps of: i) obtaining (A) a recycled polypropylene composition from a waste plastic material derived from post-consumer and/or post-industrial waste, ii) melt-mixing the recycled polypropylene composition with (B) a...

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Bibliographische Detailangaben
Hauptverfasser: VAN BEEK, Dimphna, Johanna, Maria, DONNERS, Rob, ZHANG, Junhua, MARTENS, Johannes, Peter, Antonius
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The invention relates to a process for making a blended composition, comprising the steps of: i) obtaining (A) a recycled polypropylene composition from a waste plastic material derived from post-consumer and/or post-industrial waste, ii) melt-mixing the recycled polypropylene composition with (B) a heterophasic propylene copolymer and (C) an inorganic filler, wherein the heterophasic propylene copolymer consists of (a1) a propylene-based 10 matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene copolymer consisting of at least 90 wt% of propylene monomer units and at most wt% of ethylene and/or α-olefin monomer units, based on the total weight of the propylene-based matrix and (a2) a dispersed ethylene-α-olefin copolymer, wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt%, the heterophasic propylene copolymer has a xylene soluble part as determined by ISO16152:2005 in an amount of 12 to 27 wt% and the heterophasic propylene copolymer has a melt flow index as determined by ISO1133-1:2011 at 230°C with 2.16 kg load of 5.6 to 65 dg/min, wherein the recycled composition comprises a propylene-based polymer at an amount of at least 90 wt% with respect to the recycled composition, the recycled composition has an ash content as determined by ISO 3451 of less than 10 wt% with respect to the recycled composition, the recycled composition has a melt flow index as determined by ISO1133-1:2011 at 230°C with 2.16 kg load of 15 to 100 dg/min, the recycled composition has an Izod impact strength as determined by ISO180/1A (parallel) at 23 ⁰C of 2.0 to 5.0 kJ/m2 and the recycled composition has a flexural modulus as determined by ISO178 30 (parallel) at 23 ⁰C of 1500 to 2000 MPa.