POLYOLEFIN COMPOSITION COMPRISING POLYPROPYLENE HOMOPOLYMER AND RECYCLED PLASTIC MATERIAL

    公开(公告)号:EP4119611A1

    公开(公告)日:2023-01-18

    申请号:EP21185234.8

    申请日:2021-07-13

    申请人: Borealis AG

    IPC分类号: C08L23/16

    摘要: The present invention relates to a polyolefin composition comprising a) 20-30 wt% (based on the overall weight of the polymer composition) of at least one polypropylene homopolymer, b) 10-45 wt% (based on the overall weight of the polymer composition) of a blend of recycled plastic material comprising polypropylene and polyethylene in a ratio between 3 : 7 and 49.5:1, which is recovered from a waste plastic material derived from post-consumer and/or post-industrial waste; c) 7-15 wt% (based on the overall weight of the polymer composition) of at least one heterophasic propylene copolymer; d) 1-4 wt% (based on the overall weight of the polymer composition) of at least one elastomer; e) 15-25 wt% (based on the overall weight of the polymer composition) of glass fibers; and f) 0.5-2.5 wt% (based on the overall weight of the polymer composition) of at least one coupling agent, and optionally further additives, wherein the sum of all ingredients add always up to 100 wt%; wherein the polyolefin composition has a fogging value of 1.00 - 2.00 (measured gravimetrically according to ISO 75201, method B).

    POLYOLEFIN COMPOSITION COMPRISING POLYPROPYLENE HOMOPOLYMER, POLYPROPYLENE BLOCK COPOLYMER AND RECYCLED PLASTIC MATERIAL

    公开(公告)号:EP4345135A1

    公开(公告)日:2024-04-03

    申请号:EP22199023.7

    申请日:2022-09-30

    申请人: Borealis AG

    IPC分类号: C08L23/14

    摘要: The present invention relates to a polyolefin composition comprising a) 5-30 wt% (based on the overall weight of the polyolefin composition) of at least one polypropylene homopolymer, b) 1-15 wt% (based on the overall weight of the polyolefin composition) of at least one polypropylene block copolymer, c) 20-50 wt% (based on the overall weight of the polyolefin composition) of a mixed-plastics polypropylene blend of recycled material, d) 35-55 wt% (based on the overall weight of the polyolefin composition) of glass fibers; and optionally further additives, wherein the sum of all ingredients adds always up to 100 wt%, wherein the polyolefin composition has a tensile modulus at 23°C of at least 7000 MPa (ISO 527-2), a tensile stress at yield at 23°C of at least 90 MPa (ISO 527-2), and an impact strength (ISO179-1, Charpy 1eA +23°C) of at least 8.5 kJ/m 2 .