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    PROCESS FOR PRODUCING PIPE BY BIAXIAL ELONGATION
    1.
    发明申请
    PROCESS FOR PRODUCING PIPE BY BIAXIAL ELONGATION 审中-公开

    公开(公告)号：US20200086548A1

    公开(公告)日：2020-03-19

    申请号：US16494461

    申请日：2018-02-21

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ajay Kumar Taraiya ,  Maria Soliman

    IPC: B29C55/26 ,  B29C48/00 ,  B29C48/09 ,  B29C55/00

    Abstract: The invention relates to a process for producing a biaxially oriented pipe, comprising the steps of: a) forming a polyethylene composition into a tube, wherein the polyethylene composition comprises a bimodal or a multimodal high-density polyethylene (HDPE) and b) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe, wherein step b) is performed at an axial draw ratio of 1.1 to 3.2 and an average hoop draw ratio of 1.1 to 2.0 or step b) is performed at an axial draw ratio of 1.1 to 1.9 and an average hoop draw ratio of 1.1 to 2.0, and wherein step b) is performed at a drawing temperature which is 1 to 30° C. lower than the melting point of the polyethylene composition.

    BIAXIALLY ORIENTED PIPE
    2.
    发明申请
    BIAXIALLY ORIENTED PIPE 有权

    公开(公告)号：US20220396693A1

    公开(公告)日：2022-12-15

    申请号：US17777275

    申请日：2020-11-10

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ajay Kumar Taraiya ,  Peter Degenhart ,  Ralf Kleppinger

    IPC: C08L23/12 ,  C08L23/08

    Abstract: The disclosure relates to a biaxially oriented pipe made of a polymer composition comprising a propylene-based polymer, wherein the pipe is made by a process comprising the steps of: •a) forming the polymer composition having a melting temperature Tm (° C.) into a tube, •b) heating the tube such that the tube has a drawing temperature Td (° C.) and •c) stretching the tube of step a) in the axial direction and in the peripheral direction at Td to obtain the biaxially oriented pipe, wherein Td is equal to or higher than Tm, wherein •i) the propylene-based polymer comprises (A1) a heterophasic propylene copolymer, wherein the heterophasic propylene copolymer consists of (a1) a propylene-based matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene copolymer consisting of at least 70 wt % of propylene monomer units and at most 30 wt % of ethylene and/or α-olefin monomer units, based on the total weight of the propylene-based matrix and (a2) a dispersed ethylene-α-olefin copolymer, wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt %, wherein the amount of (a2) with respect to the propylene-based polymer is 2.0 to 30 wt % or ii) the propylene-based polymer comprises (B) a random copolymer of propylene and a comonomer which is ethylene and/or an α-olefin having 4 to 10 carbon atoms, wherein when the pipe has an outer diameter of less than 40 mm, the propylene-based polymer comprising (B) has a comonomer content of 0.1 to 3.8 wt % based on the propylene-based polymer.

    PROCESS FOR MODIFYING AND JOINING ORIENTED PIPES
    4.
    发明申请
    PROCESS FOR MODIFYING AND JOINING ORIENTED PIPES 审中-公开

    公开(公告)号：US20200039138A1

    公开(公告)日：2020-02-06

    申请号：US16498837

    申请日：2018-03-27

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ajay Kumar Taraiya ,  Ralf Kleppinger

    IPC: B29C61/02 ,  B29C55/26 ,  B29C65/00 ,  F16L13/00

    Abstract: The invention relates to a modification process for modifying a biaxially oriented pipe, comprising a) providing a biaxially oriented pipe made by stretching a tube made of a thermoplastic polymer composition in the axial direction and in the peripheral direction, b) placing an insert within an end portion of the pipe, wherein the outer periphery of the cross section of the insert substantially matches the inner periphery of the cross section of the pipe and c) heating the end portion such that the end portion axially shrinks while the inner periphery of the cross section of the end portion is substantially maintained, to obtain a modified biaxially oriented pipe with a thickened end portion

    Biaxially oriented pipe
    5.
    发明授权
    Biaxially oriented pipe 有权

    公开(公告)号：US12083732B2

    公开(公告)日：2024-09-10

    申请号：US17764788

    申请日：2020-10-02

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ajay Kumar Taraiya ,  Maria Soliman ,  Peter Degenhart

    IPC: B29C55/26 ,  B29C55/00 ,  B29K23/00 ,  F16L9/12

    CPC classification number: B29C55/26 ,  B29C55/005 ,  B29K2023/08 ,  B29K2023/12 ,  B29K2023/16 ,  F16L9/12

    Abstract: The invention relates to a biaxially oriented pipe made of a polymer composition comprising a propylene-based polymer, wherein the propylene-based polymer comprises A) a heterophasic propylene copolymer, wherein the heterophasic propylene copolymer consists of (a1) a propylene-based matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene copolymer consisting of at least 70 wt % of propylene monomer units and at most 30 wt % of ethylene and/or α-olefin monomer units, based on the total weight of the propylene-based matrix and (a2) a dispersed ethylene-α-olefin copolymer, wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt %, wherein the amount of (a2) with respect to the propylene-based polymer is 2.0 to 30.0 wt %.

    PROCESS FOR PRODUCING PIPE BY BIAXIAL ELONGATION
    8.
    发明申请
    PROCESS FOR PRODUCING PIPE BY BIAXIAL ELONGATION 有权

    公开(公告)号：US20210299938A1

    公开(公告)日：2021-09-30

    申请号：US16478382

    申请日：2018-01-22

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ajay Kumar Taraiya ,  Maria Soliman

    IPC: B29C55/26 ,  B29C55/00

    Abstract: The invention relates to a process for producing a biaxially oriented pipe by a) forming a polyethylene composition into a tube, wherein the polyethylene composition comprises high density polyethylene (HDPE) and a second polyethylene selected from linear low density polyethylene (LLDPE), low density polyethylene (LDPE) and a combination of LLDPE and LDPE and b) stretching the tube of step a) in the axial direction and peripheral direction to obtain the biaxially oriented pipe.

    BIAXIALLY ORIENTED PIPE
    10.
    发明申请
    BIAXIALLY ORIENTED PIPE 有权

    公开(公告)号：US20220371262A1

    公开(公告)日：2022-11-24

    申请号：US17764788

    申请日：2020-10-02

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Ajay Kumar Taraiya ,  Maria Soliman ,  Peter Degenhart

    IPC: B29C55/26 ,  B29C55/00

    Abstract: The invention relates to a biaxially oriented pipe made of a polymer composition comprising a propylene-based polymer, wherein the propylene-based polymer comprises A) a heterophasic propylene copolymer, wherein the heterophasic propylene copolymer consists of (a1) a propylene-based matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene copolymer consisting of at least 70 wt % of propylene monomer units and at most 30 wt % of ethylene and/or α-olefin monomer units, based on the total weight of the propylene-based matrix and (a2) a dispersed ethylene-α-olefin copolymer, wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt %, wherein the amount of (a2) with respect to the propylene-based polymer is 2.0 to 30.0 wt %.

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