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    Process for producing polyethylene
    3.
    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.

    Adhesive polymer composition
    6.
    发明授权
    Adhesive polymer composition 有权

    公开(公告)号：US11001736B2

    公开(公告)日：2021-05-11

    申请号：US16494885

    申请日：2018-05-24

    申请人： Borealis AG

    发明人： Tua Sundholm ,  Juha Hartikainen ,  Jouni Purmonen ,  Ravindra Tupe ,  Juha Kuosa ,  Liubov Havula

    IPC分类号： C09J151/06 ,  B32B7/12 ,  C08L23/08 ,  C08L23/16

    摘要： An adhesive polymer composition comprising a non-elastomeric copolymer of ethylene and one or more comonomers having 3 to 10 carbon atoms, and an elastomer is disclosed herein. The non-elastomeric copolymer is present in an amount of 60 to 95% by weight, based on the adhesive polymer composition, has a weight average molecular weight Mw of from 50 000 to 80 000 g/mol, molecular weight distribution Mw/Mn of 2.0 to 5.5, density of from 0.925 to 0.945 g/cm3, and at most 0.1 vinyl groups/1000 carbon atoms. The non-elastomeric copolymer or the non-elastomeric copolymer and the elastomer have been grafted with an acid grafting agent.

    Process for producing polyethylene
    7.
    发明授权
    Process for producing polyethylene 有权

    公开(公告)号：US10364310B2

    公开(公告)日：2019-07-30

    申请号：US15548882

    申请日：2016-02-04

    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 ,  C08F210/14 ,  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 10 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 R1 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, CI 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.