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    PBT-Carbon Fiber Composites for Microwave Shielding
    183.
    发明公开
    PBT-Carbon Fiber Composites for Microwave Shielding 审中-公开

    公开(公告)号：US20240093004A1

    公开(公告)日：2024-03-21

    申请号：US18269643

    申请日：2021-12-31

    Applicant: SHPP GLOBAL TECHNOLOGIES B.V.

    Inventor： Norberto SILVI

    IPC: C08K7/06 ,  C08K3/04 ,  C08L67/02 ,  H05K9/00

    CPC classification number: C08K7/06 ,  C08K3/04 ,  C08L67/02 ,  H05K9/009 ,  C08K2201/004 ,  C08K2201/016 ,  C08K2201/019 ,  G01S7/027

    Abstract: Disclosed is a composite comprising: from about 50 wt. % to about 99 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 0.1 wt. % to 15 wt. % of a carbon fiber filler, wherein the carbon fiber has a bulk density of at least 500 g/l and a volume electrical resistivity of less than 2,000 μΩ#cm, with individual filaments that have a length-to-diameter ratio of at least 300, wherein a 3.175 mm thick molded sample of the composite exhibits a Transmission of less than 15% of incident microwave radiation when observed according to a Free Space method, measured at frequencies of 75 to 110 GHz, wherein the combined weight percent value of all components does not exceed 100 wt. %, and all weight percent values are based on the total weight of the composite.

    Antimony Trioxide Free Flame Retardant Polymer Composition
    187.
    发明公开
    Antimony Trioxide Free Flame Retardant Polymer Composition 审中-公开

    公开(公告)号：US20230323087A1

    公开(公告)日：2023-10-12

    申请号：US18010263

    申请日：2021-06-16

    Applicant: LANXESS Corporation

    Inventor： Qingliang He ,  Jochen Endtner

    IPC: C08K5/5333 ,  C08K5/03 ,  C08K5/136

    CPC classification number: C08K5/5333 ,  C08K5/03 ,  C08K5/136 ,  C08K2201/019

    Abstract: The combination of one or more phosphorus-containing flame retardant compounds as described herein with at least one brominated flame retardant compound provides an effective flame retardant additive for thermoplastic polymers without requiring the use of antimony trioxide. Flame retardant thermoplastic compositions are therefore provided containing at least one thermoplastic polymer, at least one brominated flame retardant, and at least one phosphorus-containing flame retardant as described herein. The compositions are useful for a wide range of applications, such as for electrical and electronic applications.

    Polyethylene Pipe Resin with High Resistance to Slow Crack Growth
    189.
    发明公开
    Polyethylene Pipe Resin with High Resistance to Slow Crack Growth 审中-公开

    公开(公告)号：US20230257489A1

    公开(公告)日：2023-08-17

    申请号：US18014219

    申请日：2021-07-07

    Applicant: Borealis AG

    Inventor： Andrey Buryak ,  Victor Sumerin ,  Franz Ruemer ,  Jari Aarila ,  Joy Jie Cheng

    IPC: C08F10/02 ,  C08F210/14 ,  C08L23/08 ,  C08F2/00 ,  C08K3/04

    CPC classification number: C08F10/02 ,  C08F210/14 ,  C08L23/0815 ,  C08F2/001 ,  C08K3/04 ,  C08L2203/18 ,  C08L2314/02 ,  C08K2201/019

    Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene-hexene-1 copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B) and wherein fraction (B) is present in an amount of from 51.0 to 58.5 wt. %, preferably 52.0 to 57.5 wt. %, more preferably 53.0 to 57.0 wt. % based on the total weight of the base resin, wherein fraction (B) of the base resin has a content of units derived from hexene-1 from 0.80 to 1.45 mol %, preferably of from 0.82 to 1.35 mol % and more preferably of from 0.85 to 1.30 mol %, wherein the base resin has a number average molecular weight Mn of 8,500 g/mol or higher, and wherein the polyethylene composition has a melt flow rate MFRs from 0.10 to 0.30 g/10 min, preferably from 0.15 to 0.28, and still more preferably from 0.16 to 0.25 g/10 min, to a process for producing the polyethylene composition, to an article, especially a pipe comprising the polyethylene composition and to the use of the polyethylene composition for the production of an article, especially a pipe.

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