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    HETEROPHASIC POLYPROPYLENE COMPOSITION WITH IMPROVED BALANCE OF PROPERTIES
    31.
    发明申请
    HETEROPHASIC POLYPROPYLENE COMPOSITION WITH IMPROVED BALANCE OF PROPERTIES 有权

    公开(公告)号：US20210253836A1

    公开(公告)日：2021-08-19

    申请号：US16973673

    申请日：2019-07-10

    Applicant: BOREALIS AG

    Inventor： Markus GAHLEITNER ,  Jingbo WANG ,  Klaus BERNREITNER ,  Simon SCHWARZENBERGER ,  Luigi RESCONI

    IPC: C08L23/12

    Abstract: The present invention is directed to a heterophasic polypropylene composition having an improved balance of desirable properties, i.e. high stiffness, high toughness, and high transparency. The heterophasic polypropylene composition of the present invention comprises 60.0 to 95.0 wt % of a crystalline propylene homopolymer with a melting temperature Tm1 measured by differential scanning calorimetry of higher than 155° C., 5.0 to 20.0 wt % of an elastomeric ethylene-propylene rubber, and at least one polymeric nucleating agent, wherein the crystalline propylene homopolymer (H-PP) and the elastomeric ethylene-propylene rubber (EPR) have been produced in the presence of a single-site catalyst, wherein the heterophasic polypropylene composition is characterized by a soluble fraction determined in 1,2,4-trichlorobenzene at 40° C. in the range of 5.0 to 20.0 wt %, and wherein the soluble fraction has an ethylene in content in the range of 12.0 to 40.0 wt %. The present invention is further directed to a process for the preparation of the heterophasic polypropylene composition comprising polymerizing propylene in at least three polymerization steps in the presence of a single-site catalyst, wherein the at least one polymeric nucleating agent is introduced either as a master batch by a compounding step or via a prepolymerization step prior to the first polymerization step. The present invention is further directed to an article obtained by extrusion of the heterophasic polypropylene composition, and to a packaging article comprising the extruded article. Finally, the present invention is directed to the use of the heterophasic polypropylene composition for the production of extruded articles such as films or sheets.

    HETEROPHASIC POLYPROPYLENE POLYMER
    35.
    发明申请
    HETEROPHASIC POLYPROPYLENE POLYMER 有权
    异构聚丙烯聚合物

    公开(公告)号：US20160333175A1

    公开(公告)日：2016-11-17

    申请号：US15109855

    申请日：2015-01-06

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Petar DOSHEV ,  Luigi RESCONI ,  Wilfried TOLTSCH

    IPC: C08L23/14 ,  C08J5/18

    CPC classification number: C08L23/142 ,  C08F210/06 ,  C08J5/18 ,  C08J2323/16 ,  C08J2423/16 ,  C08F110/06 ,  C08F2500/03 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/20 ,  C08F210/16 ,  C08F2/001

    Abstract: A heterophasic propylene ethylene copolymer having an MFR2 of 0.5 to 100 g/10m in and obtained using single site catalysis comprising: (i) a propylene homopolymer or propylene ethylene copolymer matrix having up to 4 wt % ethylene; and (ii) an ethylene propylene rubber (EPR) dispersed in the matrix; said heterophasic propylene ethylene copolymer having a xylene cold soluble content (XS) of 20 to 40%; wherein the ethylene content of the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer is between 70 and 90 wt.%; wherein the xylene cold soluble fraction of said heterophasic propylene ethylene copolymer has an intrinsic viscosity (IV) of 3.0 dl/g or more; and wherein the melting enthalpy (AHM) of the heterophasic propylene ethylene copolymer is between 10 and 30 J/g at a temperature of 0 to 130° C.

    Abstract translation: 使用单位点催化得到MFR 2为0.5至100g / 10m的多相丙烯乙烯共聚物，其包含：（i）具有至多4重量％乙烯的丙烯均聚物或丙烯乙烯共聚物基质; 和（ii）分散在基质中的乙丙橡胶（EPR）; 所述异相丙烯乙烯共聚物具有20至40％的二甲苯冷可溶物含量（XS）; 其中所述多相丙烯乙烯共聚物的二甲苯冷可溶部分的乙烯含量为70-90重量％; 其中所述多相丙烯乙烯共聚物的二甲苯冷可溶部分的特性粘度（IV）为3.0dl / g以上; 并且其中异相丙烯乙烯共聚物的熔融焓（AHM）在0至130℃的温度下为10至30J / g。

    BIAXIALLY ORIENTED FILM
    38.
    发明申请
    BIAXIALLY ORIENTED FILM 有权

    公开(公告)号：US20240384047A1

    公开(公告)日：2024-11-21

    申请号：US18693849

    申请日：2022-09-21

    Applicant: BOREALIS AG

    Inventor： Jingbo WANG ,  Friedrich BERGER ,  Juulia HIRVONEN ,  Arnaud ALABRUNE ,  Elisabeth POTTER ,  Tuan Anh TRAN

    IPC: C08J5/18

    Abstract: The invention provides a biaxially oriented film comprising a multimodal high density polyethylene (HDPE), wherein the multimodal HDPE has a density determined according to ISO 1183 in the range of 952 to 968 kg/m3 and an MFR2 of 0.3 to 3.0 g/10) min when measured at 190° C. with a load of 2.16 kg according to ISO 1133, and wherein the multimodal HDPE comprises at least two fractions: (C) 30 to 70 wt % relative to the total weight of the multimodal HDPE, of a lower molecular weight fraction being a polyethylene with a density in the range of 955 to 980 kg/m3 and an MFR2 of 100 to 2000 g/10 min when measured at 190° C. with a load of 2.16 kg according to ISO 1133; and (D) 30 to 70 wt % relative to the total weight of the multimodal HDPE, of a higher molecular weight fraction being a polyethylene with a density in the range of 925 to 970 kg/m3 and an MFR2 of 0.0001 to 1.0 g/10 min when measured at 190° C. with a load of 2.16 kg according to ISO 1133.

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