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    Multilayer polyproylene film
    103.
    发明授权
    Multilayer polyproylene film 有权

    公开(公告)号：US11440300B2

    公开(公告)日：2022-09-13

    申请号：US17253872

    申请日：2019-07-22

    Applicant: BOREALIS AG

    Inventor： Markus Gahleitner ,  Jingbo Wang ,  Friedrich Berger ,  Manfred Gruenberger

    IPC: B32B27/08 ,  B32B27/30 ,  B32B27/32 ,  C08F210/06 ,  B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29K23/00 ,  B29K105/00

    Abstract: Multilayer film comprising at least a skin layer, a core layer and an inner layer, the skin layer comprising a homo polypropylene or a random propylene ethylene copolymer including up to 2.5 wt.-% units derived from ethylene, the homopolypropylene or the random propylene ethylene copolymer having a MFR2 (ISO1 133, 230° C.) of 2.0 to 20 g/10 min and a melting temperature (Tm) of above 148° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min; the core layer comprising a mixture obtainable by melt blending 20 to 100 wt.-% of a random heterophasic copolymer and 0 to 80 wt.-% of styrene based TPE, whereby the random heterophasic copolymer has a melting temperature (Tm) of 134° C.-148° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min and includes a propylene ethylene copolymer rubber; and whereby the styrene based TPE has a styrene content of from 5 to 20 wt.-%, and the inner layer comprising a random propylene ethylene copolymer having a melting temperature (Tm) from 132° C. to 144° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min, wherein the multilayer film is free of phthalic acid esters as well as decomposition products thereof.

    Single-site catalyst based impacted copolymers with excellent mechanical and optical properties
    104.
    发明授权
    Single-site catalyst based impacted copolymers with excellent mechanical and optical properties 有权

    公开(公告)号：US11407886B2

    公开(公告)日：2022-08-09

    申请号：US16955623

    申请日：2019-01-04

    Applicant: BOREALIS AG

    Inventor： Wilfried Peter Toltsch ,  Jingbo Wang ,  Markus Gahleitner

    IPC: C08L23/14 ,  C08K5/00 ,  C08L23/12 ,  C08L23/16

    Abstract: The present invention relates to a heterophasic propylene polymer (HECO) comprising a) 65 to 90 wt. % of a matrix component (M) selected from a propylene homo- or random copolymer (PP); and b) 10 to 35 wt. % of an ethylene-propylene rubber (EPR), dispersed in the propylene homo- or random copolymer (PP), whereby the xylene cold soluble fraction (XCS) of the heterophasic propylene polymer (HECO) has—an ethylene content of 10.0 to 17.0 wt. %; —an intrinsic viscosity (IV), determined according to ISO 1628-1:2009, of at least 1.6 dl/g; and the xylene cold insoluble fraction (XCI) of the heterophasic propylene polymer (HECO) has 2, 1-erythro regiodefects in an amount of at least 0.4 mol % to a composition comprising the heterophasic propylene polymer (HECO), a process for its preparation and an article comprising the heterophasic propylene polymer (HECO) or the composition comprising the same.

    C2C3 RANDOM COPOLYMER
    105.
    发明申请
    C2C3 RANDOM COPOLYMER 有权

    公开(公告)号：US20220227901A1

    公开(公告)日：2022-07-21

    申请号：US17613328

    申请日：2020-05-20

    Applicant: BOREALIS AG

    Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Pauli Leskinen ,  Cornelia Tranninger

    IPC: C08F210/06 ,  C08L23/14

    Abstract: New C2C3 random copolymer (RACO), which shows improved sealing behaviour due to low sealing initiation temperature (SIT) and high hot tack force. In addition, the inventive C2C3 random copolymer (RACO) shows an excellent sterilization behaviour, i.e. retention of low haze level after sterilization. The present invention is furthermore related to the manufacture of said C2C3 random copolymer (RACO) and to its use.

    LONG CHAIN BRANCHED PROPYLENE POLYMER COMPOSITION
    106.
    发明申请
    LONG CHAIN BRANCHED PROPYLENE POLYMER COMPOSITION 有权

    公开(公告)号：US20220204665A1

    公开(公告)日：2022-06-30

    申请号：US17623300

    申请日：2020-06-19

    Applicant: Borealis AG

    Inventor： Jingbo Wang ,  Markus Gahleitner ,  Pauli Leskinen ,  Klaus Bernreitner ,  Katja Ellen Klimke ,  Markku Vahteri

    IPC: C08F210/06

    Abstract: The present invention relates to a propylene polymer composition comprising a long chain branched propylene polymer, wherein said propylene polymer composition has a) a crystallization temperature Tc of less than 115° C., b) a melting temperature Tm of less than 155° C. c) a F30 melt strength of from 5.0 to less than 30.0 cN, and d) a V30 melting extensibility of more than 190 mm/s, a process for producing said propylene polymer composition by reactive modification of a propylene polymer in the presence of a peroxide, an article comprising said propylene polymer composition, the use of said propylene polymer composition for producing an article.

    Polyolefin composition with improved balance of properties
    107.
    发明授权
    Polyolefin composition with improved balance of properties 有权

    公开(公告)号：US11370905B2

    公开(公告)日：2022-06-28

    申请号：US17289585

    申请日：2019-10-24

    Applicant: BOREALIS AG

    Inventor： Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner ,  Yi Liu

    IPC: C08L23/16 ,  C08L23/14 ,  B29C45/00 ,  B29K23/00 ,  B29K105/00

    Abstract: The present invention is directed to a polyolefin composition comprising a blend of a heterophasic polypropylene composition and 5.0 to 30.0 wt % of an ethylene homo- or copolymer, the ethylene homo- or copolymer having a density of at least 941 kg/m3 and a melt flow rate MFR21 of 1 to 10 g/10 min. The heterophasic polypropylene composition comprises a propylene homopolymer or a propylene ethylene random copolymer and an elastomeric ethylene propylene rubber, and is characterized by 75.0 to 95.0 wt % of a crystalline fraction having an ethylene content of up to 4.0 wt % and an MFR2 of 0.1 to 100 g/10 min, and 5.0 to 25.0 wt % of a soluble fraction having an ethylene content of 10.0 to 70.0 wt % and an intrinsic viscosity of 1.0 to 4.0 dl/kg, wherein the crystalline fraction and the soluble fraction are determined in 1,2,4-trichlorobenzene at 40° C.

    Nucleated C3C4 copolymers
    110.
    发明授权
    Nucleated C3C4 copolymers 有权

    公开(公告)号：US11236214B2

    公开(公告)日：2022-02-01

    申请号：US16753218

    申请日：2018-12-18

    Applicant: Borealis AG

    Inventor： Jingbo Wang ,  Wilfried Peter Töltsch ,  Luigi Maria Resconi ,  Friedrich Berger

    IPC: C08K5/1575 ,  A61L31/04

    Abstract: A propylene copolymer composition comprising A) a propylene butylene copolymer which is—free of phthalicacid esters as well as decomposition products thereof; —obtained by a Ziegler-Natta catalyst and B) at least one α-nucleating agent, the propylene copolymer composition having—a MFR (2.16 kg/210° C.) in the range of 2 to 100 g/10 min—a melting point Tm(1) of less than 140° C.—a melting point Tm(2) of at least 150° C., said Tm(2) being associated with more than 75% of the total melting enthalpy and whereby the propylene copolymer—has monomer units derived from a) propylene in an amount of 90.0-98.0 mol.-% b) butylene in an amount of 2.0-10.0 mol.-% with respect to the total weight of the propylene butylene copolymer—an isotacticity mm % as determined by 13C NMR spectroscopy of below 99.0%; and—a Koenig-B parameter with respect to butylene as determined by 13C NMR spectroscopy of more than 0.98.

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