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    Polyethylene film structures and related methods
    2.
    发明授权
    Polyethylene film structures and related methods 有权

    公开(公告)号：US11376828B2

    公开(公告)日：2022-07-05

    申请号：US16659776

    申请日：2019-10-22

    申请人： Equistar Chemicals, LP

    发明人： Lindsay E. Corcoran ,  Thomas J. Schwab

    IPC分类号： B32B27/32 ,  B32B27/30

    摘要： Film structures and related methods and uses thereof are described herein. One or more of the film structures generally include an A layer, a B layer and a C layer. The B layer is positioned between the A layer and the C layer. The A layer includes high density polyethylene. The B layer includes linear low density polyethylene and a nucleating agent. The C layer includes one or more polymers. One or more of the related methods include methods for producing film structures including an A layer, a B layer, and a C layer.

    PROCESS FOR LOWERING YELLOWNESS INDEX OF POLYOLEFIN-BASED MALEIC ANHYDRIDE GRAFT COPOLYMERS AND COMPOSITIONS MADE THEREFROM
    6.
    发明申请
    PROCESS FOR LOWERING YELLOWNESS INDEX OF POLYOLEFIN-BASED MALEIC ANHYDRIDE GRAFT COPOLYMERS AND COMPOSITIONS MADE THEREFROM 审中-公开

    公开(公告)号：US20180237570A1

    公开(公告)日：2018-08-23

    申请号：US15899039

    申请日：2018-02-19

    申请人： EQUISTAR CHEMICALS, LP

    发明人： CHUN D. LEE

    IPC分类号： C08F255/02 ,  C08F8/46 ,  C09J123/26

    CPC分类号： C08F255/02 ,  B32B27/32 ,  C08F8/12 ,  C08F8/46 ,  C08L51/06 ,  C09J123/26 ,  C09J151/06

    摘要： The disclosure provides a process for modifying a polyolefin-based composition including the steps of: (A) selecting a first polyolefin-based composition made from or containing a first polyolefin-based maleic anhydride graft having a yellowness index and an amount of covalently-bonded maleic anhydride substituents available for hydrolysis; (B) introducing the first polyolefin-based composition into a mixing chamber; (C) admixing water into the mixing chamber to form a water-containing polyolefin-based composition; (D) heating and agitating the water-containing polyolefin-based composition; (E) reacting the water with at least some of the maleic anhydride substituents to form maleic acid substituents, thereby yielding a modified polyolefin-based maleic anhydride graft having a yellowness index lower than the yellowness index of the first polyolefin-based maleic anhydride graft; and (F) collecting the modified polyolefin-based maleic anhydride graft, thereby yielding a modified polyolefin-based composition. The process is useful for making improved polyolefin-based maleic anhydride grafts, let-down products, and adhesives or tie-layers.

    LOW DENSITY POLYOLEFIN RESINS WITH HIGH DIMENSIONAL STABILITY
    9.
    发明申请
    LOW DENSITY POLYOLEFIN RESINS WITH HIGH DIMENSIONAL STABILITY 有权

    公开(公告)号：US20180016428A1

    公开(公告)日：2018-01-18

    申请号：US15648716

    申请日：2017-07-13

    申请人： EQUISTAR CHEMICALS, LP

    发明人： PETER J. GLENISTER ,  MICHAEL J. DAMMANN ,  CHANGLAI YANG

    IPC分类号： C08L23/12

    CPC分类号： C08L23/12 ,  C08K3/00 ,  C08L23/16 ,  C08L53/02 ,  C08L2205/025

    摘要： The present disclosure generally relates to low density compositions useful for making automotive components, such as molded parts, as well as other articles of manufacture; such compositions comprise (a) a polyolefin comprising polypropylene, a propylene-ethylene block copolymer, or combinations thereof, wherein the polyolefin blend is present in an amount ranging from about 53 wt. % to about 65 wt. %, based on a total weight of the composition; (b) a first elastomer, a second elastomer, and an impact-modifying compatibilizer, wherein the combined weight percent of components (b) ranges from about 27 wt. % to about 32 wt. %, based on the total weight of the composition; (c) a filler present in an amount ranging from about 5 wt. % to about 12 wt. %, based on the total weight of the composition; and (d) an additive package present in an amount ranging from about 0.5 wt. % to about 5 wt. %.