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    ELECTROMAGNETIC WAVE TRANSMISSION REDUCING MATERIAL
    1.
    发明申请
    ELECTROMAGNETIC WAVE TRANSMISSION REDUCING MATERIAL 有权

    公开(公告)号：US20220200158A1

    公开(公告)日：2022-06-23

    申请号：US17608178

    申请日：2020-05-27

    Applicant: BASF SE

    Inventor： Erik Gubbels ,  Ingolf Hennig ,  Peter Eibeck ,  Martina Schoemer

    IPC: H01Q17/00 ,  C08L67/02 ,  C08K5/56 ,  C08K3/01 ,  C08K3/08 ,  C08K3/22

    Abstract: The present invention relates to an electromagnetic millimetre wave transmission reducing material, preferably having a volume resistivity of more than 1 Ωcm, containing particles of at least an electrically conductive, magnetic or dielectric material and an electrically non-conductive polymer, wherein the transmission reducing material is capable of reducing transmission of electromagnetic waves in a frequency region of 60 GHz or more. The invention also relates to its use and method for reducing transmission as well as an electronic device comprising said transmission reducing material.

    ELECTROMAGNETIC WAVES ABSORBING MATERIAL
    2.
    发明公开
    ELECTROMAGNETIC WAVES ABSORBING MATERIAL 审中-公开

    公开(公告)号：US20240006775A1

    公开(公告)日：2024-01-04

    申请号：US18038304

    申请日：2021-11-26

    Applicant: BASF SE

    Inventor： Erik Gubbels ,  Peter Eibeck ,  Ingolf Hennig

    IPC: H01Q17/00 ,  C08K7/06

    CPC classification number: H01Q17/004 ,  H01Q17/007 ,  C08K7/06 ,  C08K2201/001

    Abstract: The present invention relates to an electromagnetic millimetre wave absorber material, preferably having a volume resistivity of more than 1 Ωcm, containing solid particles having an aspect ratio (length:diameter) of at least 5 of a first electrically conductive material, particles having an aspect ratio (length:diameter) of less than 5 of a second electrically conductive material and an electrically non-conductive polymer, wherein the absorber material is preferably capable of absorbing electromagnetic waves in a frequency region of 60 GHz to 200 GHz and wherein the electromagnetic millimetre wave absorber material comprises based on the total amount of the absorber material from 30 wt.-% to 93 wt.-% of the electrically non-conductive polymer, from 6.5 wt.-% to 10 wt.-% of the first electrically conductive material, from 0.5 wt.-% to 0.9 wt.-% of the second electrically conductive material, and from 0 wt.-% to 59.1 wt.-% of one or more additives. The invention also relates to its use and method for absorbing as well as a sensor apparatus comprising said absorber material.

    LASER-INSCRIBED AND LASER-WELDED SHAPED BODIES AND PRODUCTION THEREOF
    5.
    发明公开
    LASER-INSCRIBED AND LASER-WELDED SHAPED BODIES AND PRODUCTION THEREOF 审中-公开

    公开(公告)号：US20240262043A1

    公开(公告)日：2024-08-08

    申请号：US18289766

    申请日：2022-05-04

    Applicant: BASF SE

    Inventor： Peter Eibeck

    IPC: B29C65/16 ,  B29K67/00

    CPC classification number: B29C65/1616 ,  B29C65/1635 ,  B29C2791/009 ,  B29C2795/007 ,  B29K2067/006 ,  B29K2995/0027

    Abstract: The present invention relates to shaped bodies comprising at least a first molded part and a second molded part, where the first molded part is at least partly transparent to NIR radiation, the second molded part absorbs NIR radiation such that the first molded part and the second molded part are at least partly joined to one another by laser transmission welding, where the first molded part has at least one subregion which is dark-colored and where at least a portion of the subregion has a light-colored laser inscription, where the first molded part consists at least partly of a molding compound comprising, based in each case on the total weight of the molding compound, A)>38.2% by weight to 99.98% by weight of a thermoplastic polymer or a mixture of thermoplastic polymers, B) 0.01% by weight to

    ELECTROMAGNETIC WAVES ABSORBING MATERIAL
    7.
    发明申请
    ELECTROMAGNETIC WAVES ABSORBING MATERIAL 有权

    公开(公告)号：US20220225551A1

    公开(公告)日：2022-07-14

    申请号：US17609435

    申请日：2020-05-27

    Applicant: BASF SE

    Inventor： Erik Gubbels ,  Ingolf Hennig ,  Martina Schoemer ,  Peter Eibeck

    IPC: H05K9/00 ,  C08K3/04 ,  C08K3/08

    Abstract: The present invention relates to an electromagnetic millimetre wave absorber material, preferably having a volume resistivity of more than 1 Ω cm, containing solid particles having an aspect ratio (length:diameter) of at least 5 of a first electrically conductive material, particles having an aspect ratio (length:diameter) of less than 5 of a second electrically conductive material and an electrically non-conductive polymer, wherein the absorber material is capable of absorbing electromagnetic waves in a frequency region of 60 GHz or more. The invention also relates to its use and method for absorbing as well as a sensor apparatus comprising said absorber material.

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