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    ONE-COMPONENT POWDER COATING COMPOSITION AND SUBSTRATE COATED WITH SUCH POWDER COATING COMPOSITION
    17.
    发明申请
    ONE-COMPONENT POWDER COATING COMPOSITION AND SUBSTRATE COATED WITH SUCH POWDER COATING COMPOSITION 审中-公开

    公开(公告)号：WO2021245045A1

    公开(公告)日：2021-12-09

    申请号：PCT/EP2021/064604

    申请日：2021-06-01

    Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.

    Inventor： KITTLE, Kevin Jeffrey ,  GONZALEZ ALVAREZ, Maria Jose

    IPC: C09D5/03 ,  C08K3/36 ,  C08K3/22 ,  C08K9/08 ,  C08K2003/2227 ,  C08K2201/014 ,  C09D5/033 ,  C09D7/62

    Abstract: The invention relates to a one-component powder coating composition comprising a curable resin and one or more curing additives for curing the curable resin, wherein the powder coating composition comprises: - one powder coating component comprising the curable resin and the one or more curing additives; and - in the range of from 1.0 to 20 wt% of a dry-blended inorganic particulate additive consisting of inorganic components i), ii), and iii), wherein component i) is non-coated aluminium oxide or non-coated silica, component ii) is aluminium hydroxide and/or aluminum oxyhydroxide, and component iii) is silica, and wherein, if component i) is non-coated silica, component iii) does not comprise non-coated silica, wherein the dry-blended inorganic particulate additive comprises in the range of from 50 to 99 wt% of inorganic component iii), wherein the wt% of the dry-blended inorganic additive is based on the weight of the one powder coating component, and wherein the powder coating component has a particle size distribution with a Dv90 of at most 50 µm and a Dv50 of at most 30 µm, wherein Dv90 and Dv50 are determined by laser diffraction according to ISO 13320 using the Mie model wherein if the powder coating component has a particle size distribution such that Dv90 is at most 25 µm and Dv50 is at most 12 µm, the powder coating composition comprises in the range of from 8.0 to 20 wt% of the dry-blended inorganic particulate additive, based on the weight of the one powder coating component, and wherein if the powder coating component has a particle size distribution such that Dv90 is in the range of from above 25 to 50 µm and Dv50 is in the range of from above 12 to 30 µm, the powder coating composition comprises in the range of from 1.0 to 8.0 wt% of the dry-blended particulate additive, based on the weight of the one powder coating component. The invention further relates to a substrate coated with such powder coating composition.

    THERMOSETTING THERMALLY CONDUCTIVE DIELECTRIC COMPOSITE
    19.
    发明申请
    THERMOSETTING THERMALLY CONDUCTIVE DIELECTRIC COMPOSITE 审中-公开

    公开(公告)号：WO2021146274A1

    公开(公告)日：2021-07-22

    申请号：PCT/US2021/013223

    申请日：2021-01-13

    Applicant: ROGERS CORPORATION

    Inventor： KOES, Thomas A.

    IPC: C08K3/36 ,  C08K3/38 ,  C08J5/24 ,  C08K5/5435 ,  C08J2363/00 ,  C08J5/249 ,  C08K2003/385 ,  C08K2201/003 ,  C08K2201/014

    Abstract: In an aspect, a dielectric composite comprises a thermoset epoxy resin; a reinforcing layer; greater than or equal 40 volume percent of a hexagonal boron nitride based on the total volume of the dielectric composite minus the reinforcing layer; 3 to 7.5 volume percent of a fused silica based on the total volume of the dielectric composite minus the reinforcing layer; an epoxy silane; an accelerator; and a de-aerator. The hexagonal boron nitride can comprise a plurality of hexagonal boron nitride platelets and a plurality of hexagonal boron nitride agglomerates. A volume ratio of the hexagonal boron nitride agglomerates to the hexagonal boron nitride platelets can be 1:1.5 to 4:1.

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