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    PROCESS FOR PRODUCING A COATED PIPE
    1.
    发明申请
    PROCESS FOR PRODUCING A COATED PIPE 审中-公开

    公开(公告)号：US20200032095A1

    公开(公告)日：2020-01-30

    申请号：US16337630

    申请日：2017-09-20

    申请人： BOREALIS AG

    发明人： Jari Äärilä ,  Jarmo Kela ,  Jouni Purmonen

    IPC分类号： C09D123/08 ,  C08F210/16 ,  B05D1/26 ,  B05D7/00 ,  B05D7/14 ,  F16L58/10

    摘要： The present invention deals with a process for producing a coated pipe. The process comprises (i) homopolymerising ethylene or copolymerising ethylene and an α-olefin comonomer in a first polymerisation step in the presence of a polymerisation catalyst to produce a first ethylene homo- or copolymer having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 1 to 2000 g/10 min; (ii) homopolymerising ethylene or copolymerising ethylene and an α-olefin comonomer in a second polymerisation step in the presence of a first ethylene homo- or copolymer to produce a first ethylene polymer mixture comprising the first ethylene homo- or copolymer and a second ethylene homo- or copolymer, said first ethylene polymer mixture having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 10 to 2000 g/10 min; (iii) copolymerising ethylene and an α-olefin comonomer in a third polymerisation step in the presence of the first ethylene polymer mixture to produce a second ethylene polymer mixture comprising the first ethylene polymer mixture and a third ethylene copolymer, said second ethylene polymer mixture having a density of from 915 to 965 kg/m3, preferably from 930 to 955 kg/m3 and a melt flow rate MFR5 of from 0.2 to 10 g/10 min; (iv) providing a pipe having an outer surface layer; (v) applying a coating composition onto the pipe outer surface layer to form a top coat layer, wherein the coating composition comprises the second ethylene polymer mixture.

    A PROCESS FOR PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS PREPARED THEREOF
    2.
    发明申请
    A PROCESS FOR PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS PREPARED THEREOF 审中-公开

    公开(公告)号：US20200010655A1

    公开(公告)日：2020-01-09

    申请号：US16348204

    申请日：2017-11-16

    申请人： Borealis AG

    发明人： Jari Äärilä ,  Auli Nummila-Pakarinen ,  Jarmo Kela ,  Anh Tuan Tran

    IPC分类号： C08L23/08 ,  C08J5/18 ,  B29C48/00

    摘要： The present invention deals with a process for producing a multimodal ethylene polymer composition suitable for producing films by blow moulding. The process comprises (i) copolymerising ethylene and an alpha-olefin comonomer in a first polymerisation step in the presence of a silica supported Ziegler-Natta polymerisation catalyst to produce a first ethylene homo- or copolymer (PE1) having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 400 to 1000 g/10 min; (ii) copolymerising ethylene and an alpha-olefin comonomer in a second polymerisation step in the presence of the first ethylene copolymer to produce a first ethylene polymer mixture (PEM1) comprising the first ethylene copolymer and a second ethylene copolymer, said first ethylene polymer mixture having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 150 to 800 g/10 min, and wherein the MFR2 of the first ethylene copolymer (PEI) is higher than first ethylene polymer mixture (PEM1) and (iii) copolymerising ethylene and an alpha-olefin comonomer in a third polymerisation step in the presence of the first ethylene polymer mixture to produce a second ethylene polymer mixture (PEM2) comprising the first ethylene polymer mixture and a third ethylene copolymer, said second ethylene polymer mixture having a density of from 915 to 925 kg/m3 and a melt flow rate MFR5 of from 0.3 to 5 g/10 min.

    Process for producing polyethylene
    4.
    发明授权
    Process for producing polyethylene 有权

    公开(公告)号：US10800864B2

    公开(公告)日：2020-10-13

    申请号：US16438690

    申请日：2019-06-12

    申请人： BOREALIS AG

    发明人： Victor Sumerin ,  Joseph Thorman ,  Jani Aho ,  Markku Vahteri ,  Ravindra Tupe ,  Jarmo Kela

    IPC分类号： C08F210/16 ,  C08L23/16

    摘要： The present invention relates to a process for producing ethylene copolymers in a multistage process comprising at least one slurry phase polymerization stage and at least one gas phase polymerization stage in the presence of Ziegler Natta catalyst comprising a solid catalyst component, a cocatalyst of a compound of group 13 metal and an external additive selected from alkoxysilanes of formula (I) R1nSi(OR2)4-n, (I) where n is an integer 0 to 3, each R1 are equal or different and are selected among H, halogen, alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the R′groups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, provided that all R1 are not hydrogen, R2 are equal or different and are selected among alkyl groups of 1 to 6 carbon atoms optionally substituted with one or more halogen atoms, alkenyl groups of 2 to 6 carbon atoms optionally substituted with one or more halogen atoms, and aryl groups of 6 to 12 carbon atoms optionally substituted with one or more halogen atoms, or the OR2 groups can form with the Si atom they are linked to a ring of 3 to 8 ring atoms, halogen is Br, Cl or F. The invention further relates to the catalysts and use thereof in said multistage process r for producing ethylene copolymers having melt flow rate ratio FRR21/5 at least 40 and/or polydispersity index PDI of at least 27.

    POLYMER COMPOSITION AND A PROCESS FOR PRODUCTION OF THE POLYMER COMPOSITION
    5.
    发明申请
    POLYMER COMPOSITION AND A PROCESS FOR PRODUCTION OF THE POLYMER COMPOSITION 审中-公开

    公开(公告)号：US20190256695A1

    公开(公告)日：2019-08-22

    申请号：US16307593

    申请日：2017-06-20

    申请人： BOREALIS AG

    发明人： Yi Liu ,  Qizheng Dou ,  Victor Sumerin ,  Jani Aho ,  Jarmo Kela ,  Thomas Hjertberg ,  Anna Hjärtfors

    IPC分类号： C08L23/08 ,  C08L23/06

    摘要： A polymer composition comprising a base resin is disclosed herein. The base resin includes a first high molecular weight component, a low molecular weight component and a second high molecular weight component. The weight average molecular weight of the second high molecular weight component differs from the first high molecular weight component. The ratio of the weight and number average molecular weight of the first high molecular weight component is greater than 5. The first high molecular weight component has a density of equal or less than 930 kg/m3, and an intrinsic viscosity of equal or less than 15 dl/g, The base resin has a melt flow rate MFR5 of equal or less than 0.40 g/10 min and the composition has a viscosity at a shear stress of 747 Pa (eta747) of more than 700 kPas. Also a process for the production of a polymer composition is disclosed herein.

    Process for producing polyolefin film composition and films prepared thereof
    8.
    发明授权
    Process for producing polyolefin film composition and films prepared thereof 有权

    公开(公告)号：US11180586B2

    公开(公告)日：2021-11-23

    申请号：US16348066

    申请日：2017-11-16

    申请人： Borealis AG

    发明人： Jari Äärilä ,  Auli Nummila-Pakarinen ,  Jarmo Kela ,  Anh Tuan Tran

    IPC分类号： C08F110/02 ,  C08F2/01 ,  C08F2/34 ,  C08F210/16 ,  C08J5/18 ,  C08L23/06 ,  C08L23/08 ,  C08F2/00 ,  B29C49/00 ,  B01J19/18 ,  B29C48/00 ,  B29K23/00 ,  B29L7/00

    摘要： The present invention deals with a process for producing a multimodal ethylene polymer composition suitable for producing films by blow moulding and comprising the steps of (i) homopolymerising ethylene or copolymerising ethylene and an alpha-olefin comonomer in a first polymerisation step in the presence of a silica supported Ziegler-Natta catalyst to produce a first ethylene homo- or copolymer (PEI) having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 2 to 1000 g/10 min, provided that if the first ethylene homo- or copolymer (PE1) is a copolymer, MFR2 thereof is in the range of 2 to 100 g/10 min; (ii) homopolymerising ethylene or copolymerising ethylene and an alpha-olefin comonomer in a second polymerisation step in the presence of the first ethylene homo- or copolymer to produce a first ethylene polymer mixture (PEM1) comprising the first ethylene homo- or copolymer and a second ethylene homo- or copolymer (PE2), said first ethylene polymer mixture having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 10 to 1000 g/10 min; (iii) copolymerising ethylene and an alpha-olefin comonomer in a third polymerisation step in the presence of the first ethylene polymer mixture (PEM1) to produce a second ethylene polymer mixture (PEM2) comprising the first ethylene polymer mixture (PEM1) and a third ethylene copolymer (PE3), said second ethylene polymer mixture (PEM2) having a density of from 915 to 940 kg/m3 and a melt flow rate MFR5 of from 0.3 to 5 g/10 min, and wherein the second ethylene polymer mixture comprises from 10 to 35% by weight of the first ethylene homo- or copolymer, from 10 to 35% by weight of the second ethylene homo- or copolymer and from 45 to 70% by weight of the third ethylene copolymer.

    A PROCESS FOR PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS PREPARED THEREOF
    10.
    发明申请
    A PROCESS FOR PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS PREPARED THEREOF 审中-公开

    公开(公告)号：US20190300630A1

    公开(公告)日：2019-10-03

    申请号：US16348066

    申请日：2017-11-16

    申请人： Borealis AG

    发明人： Jari Äärilä ,  Auli Nummila-Pakarinen ,  Jarmo Kela ,  Anh Tuan Tran

    IPC分类号： C08F110/02 ,  C08F210/16 ,  C08F2/01 ,  C08J5/18 ,  C08F2/34 ,  C08L23/08 ,  C08L23/06

    摘要： The present invention deals with a process for producing a multimodal ethylene polymer composition suitable for producing films by blow moulding and comprising the steps of (i) homopolymerising ethylene or copolymerising ethylene and an alpha-olefin comonomer in a first polymerisation step in the presence of a silica supported Ziegler-Natta catalyst to produce a first ethylene homo- or copolymer (PEI) having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 2 to 1000 g/10 min, provided that if the first ethylene homo- or copolymer (PE1) is a copolymer, MFR2 thereof is in the range of 2 to 100 g/10 min; (ii) homopolymerising ethylene or copolymerising ethylene and an alpha-olefin comonomer in a second polymerisation step in the presence of the first ethylene homo- or copolymer to produce a first ethylene polymer mixture (PEM1) comprising the first ethylene homo- or copolymer and a second ethylene homo- or copolymer (PE2), said first ethylene polymer mixture having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 10 to 1000 g/10 min; (iii) copolymerising ethylene and an alpha-olefin comonomer in a third polymerisation step in the presence of the first ethylene polymer mixture (PEM1) to produce a second ethylene polymer mixture (PEM2) comprising the first ethylene polymer mixture (PEM1) and a third ethylene copolymer (PE3), said second ethylene polymer mixture (PEM2) having a density of from 915 to 940 kg/m3 and a melt flow rate MFR5 of from 0.3 to 5 g/10 min, and wherein the second ethylene polymer mixture comprises from 10 to 35% by weight of the first ethylene homo- or copolymer, from 10 to 35% by weight of the second ethylene homo- or copolymer and from 45 to 70% by weight of the third ethylene copolymer.