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    Thermoplastic elastomer composition
    61.
    发明公开
    Thermoplastic elastomer composition 失效
    热塑性弹性体组合物

    公开(公告)号：EP0338860A3

    公开(公告)日：1990-09-19

    申请号：EP89304012.1

    申请日：1989-04-21

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Mitsuno, Tatsuyuki ,  Shinonaga, Hideo ,  Daimon, Akio

    IPC分类号： C08L23/16 ,  C08F255/04 ,  C08K5/34

    CPC分类号： C08L23/10 ,  C08L23/16 ,  C08L91/00 ,  C08L2666/04 ,  C08L2666/06

    摘要： A thermoplastic elastomer composition which comprises
    a mixture (F) comprising
    100 parts by weight of a mixture (C) essentially consisting of 24 - 80 parts by weight of an oil-extended olefinic copolymer rubber (A) and 20 - 76 parts by weight of an olefinic plastic (B); said oil-extended olefinic copolymer rubber (A) comprising 100 parts by weight of an olefinic copolymer rubber (a) having a Mooney viscosity (ML₁₊₄ 100°C) of 90 - 200 and a propylene content of 10 - 60 % by weight and 20 - 60 parts by weight of a mineral oil softener (b), and
    0.1 - 3 parts by weight of a bismaleimide compound (D), said mixture (F) being dynamically heat-­treated in the presence of an organic peroxide (E). The thermoplastic elastomer composition has excellent injection moldability and mat appearance. In the production of the thermoplastic elastomer composition, kneading is easy to carry out and a time required for the kneading is considerably reduced.

    MODIFICATION PROCESS FOR POLYMER RECYCLATES
    66.
    发明公开
    MODIFICATION PROCESS FOR POLYMER RECYCLATES 审中-公开

    公开(公告)号：EP4279538A1

    公开(公告)日：2023-11-22

    申请号：EP22173567.3

    申请日：2022-05-16

    申请人： Borealis AG

    发明人： TOULOUPIDIS, Vasileios ,  SOBCZAK, Lukas ,  MUSTER, Udo ,  TRAN, Tuan Anh ,  DENIFL, Peter ,  BRAUN, Hermann ,  ALBRECHT, Andreas ,  ABBASI, Mahdi ,  BARROSO, Vitor ,  KNOGLER, Bernhard ,  HOFSTADLER, Katrin ,  GAHLEITNER, Markus

    IPC分类号： C08J3/24 ,  C08L23/12 ,  C08F255/04 ,  C08J11/10

    摘要： The present invention relates to a process for modifying a post-consumer recycled polyolefin composition comprising the steps of (A) providing a post-consumer recycled polyolefin composition having a starting melt flow rate MFR 2 (1), determined according to ISO 1133 at 2.16 kg load, 230 °C, in the range of from 1.0 to 100 g/10 min, and comprising, based on the total weight of the post-consumer recycled polyolefin composition, determined by FTIR spectroscopy, (a) at least 50 wt.-% of one or more propylene (co)polymer component(s) and (b) up to 50 wt.-% of one or more ethylene (co)polymer component(s); (B) adding 0.10 to 1.50 wt.-%, based on the total weight of the post-consumer recycled polyolefin composition, of a radical initiator to the post-consumer recycled polyolefin composition and optionally mixing the components to form a mixture (1); (C) adding 0.05 to 0.50 wt.-%, based on the total weight of the post-consumer recycled polyolefin composition, of a twofold unsaturated hydrocarbon compound having the general formula (1) CH 2 =CH-(R)-CH=CH 2 , wherein R may be present or absent, and if being present, R is an aliphatic or aromatic hydrocarbon group comprising from 1 to 6 carbon atoms, and mixing the components to form a mixture (2); and (D) extruding the mixture (2) at a temperature in the range of from 180 to 300 °C to obtain a modified polyolefin composition having a final melt flow rate MFR 2 (2), determined according to ISO 1133 at 2.16 kg load, 230 °C; wherein the ratio of MFR 2 (2) : MFR 2 (1) is below 1.00. The present invention also relates to a modified polyolefin composition obtained by the process, as well as to the use of the modified polyolefin composition in the manufacture of an article, and to a respective article.