US 12,252,605 B2
Compositions derived from post-consumer recyclates based materials with low crystallization temperature
Daniela Mileva, Linz (AT); Hermann Braun, Linz (AT); Susanne Margarete Kahlen, Linz (AT); Gennaro Signorelli, Linz (AT); Gisela Lehner, Linz (AT); and Lionel Delaviere, Courbevoie (FR)
Assigned to BOREALIS AG, Vienna (AT)
Appl. No. 18/567,638
Filed by BOREALIS AG, Vienna (AT)
PCT Filed Jun. 9, 2022, PCT No. PCT/EP2022/065622
§ 371(c)(1), (2) Date Dec. 6, 2023,
PCT Pub. No. WO2022/258728, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 21179097 (EP), filed on Jun. 11, 2021.
Prior Publication US 2024/0262998 A1, Aug. 8, 2024
Int. Cl. C08L 23/12 (2006.01)
CPC C08L 23/12 (2013.01) [C08L 2203/18 (2013.01); C08L 2205/02 (2013.01); C08L 2207/20 (2013.01)] 16 Claims
 
1. A polyolefin composition obtainable by blending:
a) 10 to 40 wt. % of a post-consumer recyclate polyolefin based material (PCR-PO) having a melt flow rate (determined according to ISO 1133, 2.16 kg, 230° C.) of 1 to 50 g/10 min;
b) 10 to 35 wt. % of a polypropylene composition (PP) having a C2weight content of less than 3.4 wt. %, based on the total weight of the polypropylene composition (PP),
wherein the polypropylene composition (PP) is selected from the group consisting of polypropylene homopolymer (h PP1) having a melt flow rate (determined according to ISO 1133, 2.16 kg, 230° C.) of 10 to 40 g/10 min, polypropylene random copolymer (r-PP), and mixtures of the polypropylene random copolymer (r-PP) with a polypropylene homopolymer (h-PP2);
c) 30 to 55 wt. % of an inorganic filler;
each based on the total weight of the polyolefin composition,
wherein the polyolefin composition has a crystallization temperature Tc (determined according to ISO 11357) of 125° C. or less and the flexural modulus (determined according to ISO 178) is 2000 MPa or more.