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    METHOD FOR PRODUCING SILICON-CONTAINING OXIDE-COATED ALUMINUM NITRIDE PARTICLE
    1.
    发明公开
    METHOD FOR PRODUCING SILICON-CONTAINING OXIDE-COATED ALUMINUM NITRIDE PARTICLE 审中-公开

    公开(公告)号：US20240327646A1

    公开(公告)日：2024-10-03

    申请号：US18291038

    申请日：2023-06-29

    申请人： Resonac Corporation

    发明人： Ikue KOBAYASHI ,  Naoki MINORIKAWA ,  Hiroki SUGIMOTO

    IPC分类号： C09C3/00 ,  C09C1/40 ,  C09C3/04 ,  C09C3/12

    CPC分类号： C09C3/006 ,  C09C1/40 ,  C09C3/043 ,  C09C3/12

    摘要： A method for producing a silicon-containing oxide-coated aluminum nitride particle that maintains the high thermal conductivity of aluminum nitride particles, have excellent moisture resistance, and do not easily aggregate. A method for producing a silicon-containing oxide-coated aluminum nitride particle including an aluminum nitride particle and a silicon-containing oxide film that covers a surface of the aluminum nitride particle. The method includes a vapor-depositing an organic silicone compound including a specific structure on the surface of the aluminum nitride particle to obtain the aluminum nitride particle covered with the organic silicone compound under a nitrogen atmosphere, and a partial pressure of the organic silicone compound in the nitrogen atmosphere is 2.6×102 to 3.9×103 Pa, and heating the aluminum nitride particle covered with the organic silicone compound at a temperature of 300° C. or higher and lower than 1000° C.

    RADAR FREQUENCY TRANSPARENT EFFECT PIGMENT MIXTURE, FORMULATIONS AND COATINGS THEREOF
    2.
    发明公开
    RADAR FREQUENCY TRANSPARENT EFFECT PIGMENT MIXTURE, FORMULATIONS AND COATINGS THEREOF 审中-公开

    公开(公告)号：US20240263013A1

    公开(公告)日：2024-08-08

    申请号：US18607127

    申请日：2024-03-15

    申请人： ECKART GMBH

    发明人： Carolin Brendel ,  Klaus Greiwe ,  Robert Maul ,  Oliver Bedford ,  Günter Kaupp

    IPC分类号： C09C1/00 ,  C09C1/40

    CPC分类号： C09C1/0021 ,  C09C1/40 ,  C01P2006/62 ,  C09C2200/1004 ,  C09C2200/1058 ,  C09C2200/505

    摘要： This invention deals with effect pigment mixture comprising platelet-like aluminum effect pigments obtained by grinding of aluminum or aluminum based alloy shot and silvery pearlescent pigments, wherein the silvery pearlescent pigments are taken from the group consisting of: a) pearlescent pigments comprising a transparent substrate which is coated with a high-refractive index layer with n>1.8, which comprises or consists of an iron-oxide with Fe(II)-ions, b) pearlescent pigments comprising a transparent substrate which is coated with a high-refractive index layer with n>1.8, which comprises or consists of titanium suboxide or a pearlescent pigment comprising a substrate with a high-refractive index with n>1.8 layer, which comprises or consists of a titanium suboxide that is optionally coated with a high-refractive index layer with n>1.8, c) pearlescent pigments comprising a transparent substrate which is coated with a high-refractive index layer with n>1.8, which comprises or consists of titanium oxynitride, d) pearlescent pigments comprising a transparent substrate which is coated with a layer comprising carbon, wherein the carbon is enclosed in a particulate form in another metal oxide layer or is formed as a separate, individual layer, e) a transparent substrate coated with a first layer comprising or consisting of a mixture of the oxides of titanium, iron and at least one of cobalt and chromium and a second layer on the first layer, wherein the second layer comprises an oxide of titanium, and mixtures or combinations of the pearlescent pigments a) to e) or pearlescent pigments with mixtures or combinations of the various coating layers mentioned in the pearlescent pigments a) to e), wherein the weight ratio of the pearlescent pigment to the aluminum effect pigment is in a range of 0.4 to 5.0. The invention deals also with a coating formulation containing this effect pigment mixture.

    HEAT TRANSFER MIXTURE AND METHOD
    3.
    发明公开
    HEAT TRANSFER MIXTURE AND METHOD 审中-公开

    公开(公告)号：US20240254378A1

    公开(公告)日：2024-08-01

    申请号：US18100165

    申请日：2023-01-23

    申请人： HT MATERIALS SCIENCE (IP) LIMITED

    发明人： FRANCESCO MICALI ,  Arturo De Risi ,  Marco Milanese

    IPC分类号： C09K5/10 ,  C09C1/40 ,  C09C3/00 ,  C09C3/04 ,  C09C3/10

    CPC分类号： C09K5/10 ,  C09C1/407 ,  C09C3/006 ,  C09C3/041 ,  C09C3/10 ,  C01P2004/62 ,  C01P2006/32

    摘要： A method of forming a heat transfer fluid includes dispersing an aluminum oxide powder in water to form a slurry; combining the slurry with water to form a first combination; adding a first amount of a chelating agent to the first combination to form a second combination; adding a first amount of a surfactant to the second combination to form a third combination; adding one of the group consisting of propylene glycol and ethylene glycol to the third combination to form a fourth combination; adding a second amount of the chelating agent to the fourth combination to form a fifth combination; adding a second amount of the surfactant to the fifth combination to form a sixth combination; and mixing the sixth combination to form the heat transfer fluid.