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    ALUMINUM-CONTAINING SILICA SOL DISPERSED IN NITROGEN-CONTAINING SOLVENT, AND RESIN COMPOSITION
    2.
    发明公开
    ALUMINUM-CONTAINING SILICA SOL DISPERSED IN NITROGEN-CONTAINING SOLVENT, AND RESIN COMPOSITION 审中-公开

    公开(公告)号：EP4053077A1

    公开(公告)日：2022-09-07

    申请号：EP21889246.1

    申请日：2021-11-04

    申请人： Nissan Chemical Corporation

    发明人： KUROIWA, Kazuya ,  ONISHI, Hikaru ,  SUGAWARA, Yuki ,  SUEMURA, Naohiko

    IPC分类号： C01B33/145 ,  C01B33/146 ,  C09D5/25 ,  H01B3/00 ,  C09D7/62

    摘要： There is provided a silica sol dispersed in a nitrogen-containing solvent and a silica-containing resin composition (in particular, an insulating resin composition) containing a nitrogen atom-containing polymer.
    A silica sol comprising silica particles containing aluminum atoms and having an average primary particle diameter of 5 to 100 nm, the silica particles being dispersed in a nitrogen-containing solvent, wherein the aluminum atoms are bonded to the surfaces of the silica particles in an amount in terms of Al 2 O 3 of 800 to 10,000 ppm/SiO 2 . The silica particles are bonded to a silane compound or a hydrolysate of the silane compound. The nitrogen-containing solvent is an amide solvent. The nitrogen-containing solvent is dimethylacetamide, dimethylformamide, N-methylpyrrolidone, or N-ethylpyrrolidone. The insulating resin composition comprising the silica sol and a nitrogen-containing polymer. The nitrogen-containing polymer is polyimide, polyamide, polyamic acid, polyamideimide, polyetherimide, or polyesterimide. An insulation-coated conductor wire produced by insulation coating of a conductor wire with the insulating resin composition.

    DISPERSION CONTAINING COLLOIDAL SILICA PARTICLES AND ZINC CYANURATE PARTICLES
    3.
    发明公开
    DISPERSION CONTAINING COLLOIDAL SILICA PARTICLES AND ZINC CYANURATE PARTICLES 审中-公开

    公开(公告)号：EP3770300A1

    公开(公告)日：2021-01-27

    申请号：EP19772229.1

    申请日：2019-03-19

    申请人： Nissan Chemical Corporation

    发明人： SHIMIZU, Daisuke ,  MURAKAMI, Satoru ,  KASHIMA, Yoshiyuki ,  OOTA, Isao

    IPC分类号： C23C26/00 ,  C01B33/145 ,  C09D5/02 ,  C09D5/08 ,  C09D7/61 ,  C09D17/00 ,  C09D201/00

    摘要： There is provided a dispersion comprising colloidal silica particles and zinc cyanurate particles and a coating composition comprising the dispersion, in order to sufficiently exhibit a function such as the inhibition of corrosion of a metal surface.
    A dispersion in which dispersoid particles comprising colloidal silica particles and zinc cyanurate particles are dispersed in a liquid medium. The colloidal silica particles may have an average particle diameter of 5 to 500 nm, and the dispersion may contain 0.1 to 40% by mass of the colloidal silica particles in terms of SiO 2 concentration. Primary particles of the zinc cyanurate particles may have a major axis length of 50 to 1000 nm and a minor axis length of 10 to 300 nm as observed with a transmission electron microscope, and may have a ratio of the major axis length to the minor axis length of 2 to 25, and the dispersion may contain 0.1 to 50% by mass of the zinc cyanurate particles in terms of solids content. A ratio of the colloidal silica particles to the zinc cyanurate particles may be 1:0.01 to 100 in terms of colloidal silica : zinc cyanurate mass ratio, and a total solids content of the colloidal silica particles and the zinc cyanurate particles may be 0.1 to 50% by mass. The liquid medium may be water or an organic solvent. A method for producing a coating composition, comprising a step of mixing the dispersion and a resin emulsion using a liquid dispersion machine.

    METHOD FOR MANUFACTURING SILICA AEROGEL-CONTAINING BLANKET, AND SILICA AEROGEL-CONTAINING BLANKET MANUFACTURED THEREBY
    6.
    发明公开
    METHOD FOR MANUFACTURING SILICA AEROGEL-CONTAINING BLANKET, AND SILICA AEROGEL-CONTAINING BLANKET MANUFACTURED THEREBY 审中-公开

    公开(公告)号：EP3284719A4

    公开(公告)日：2018-05-23

    申请号：EP16780217

    申请日：2016-03-28

    申请人： LG CHEMICAL LTD

    发明人： OH KYOUNG SHIL ,  KIM MI RI ,  LEE JE KYUN

    IPC分类号： C01B33/14 ,  C01B33/141 ,  C01B33/145 ,  C01B33/155 ,  C01B33/158

    CPC分类号： C01B33/14 ,  C01B33/155 ,  C01B33/1585

    摘要： In the present invention are provided a method for preparing a silica aerogel-containing blanket, and a blanket which includes a silica aerogel and is manufactured using the same, wherein the method includes a step for preparing a reaction solution by reacting a silazane-based surface modification agent with an alcohol-based compound, a step for preparing a silica gel-base material composite by adding a silica precursor, water, and a polar organic solvent to the reaction solution to prepare a silica sol, and then immersing a base material for a blanket in the prepared silica sol to gelate the silica sol, and a step for drying the silica gel-base material composite. Through the preparing method, a silica aerogel-containing blanket may be manufactured without a separate surface modification step and by using a minimal amount of a surface modification agent, wherein the blanket has low thermal conductivity and excellent mechanical flexibility by including a silica aerogel having high hydrophobicity along with excellent physical properties, in particular, high porosity.

    AMINOSILANE-MODIFIED COLLOIDAL SILICA DISPERSION AND METHOD OF MANUFACTURING SAME
    7.
    发明公开
    AMINOSILANE-MODIFIED COLLOIDAL SILICA DISPERSION AND METHOD OF MANUFACTURING SAME 审中-公开
    氨基硅烷改性的胶态二氧化硅分散体及其制造方法

    公开(公告)号：EP3296262A1

    公开(公告)日：2018-03-21

    申请号：EP16792722.7

    申请日：2016-05-11

    申请人： Nissan Chemical Industries, Ltd. ,  Niigata University

    发明人： MURAKAMI, Natsumi ,  HIDA, Masahiro ,  TSUBOKAWA, Norio ,  YAMAUCHI, Takeshi ,  MAETA, Tomoya

    IPC分类号： C01B33/145 ,  C08F292/00

    CPC分类号： C08G81/02 ,  C01B33/14 ,  C01B33/145 ,  C08F292/00 ,  C09C1/3081

    摘要： In the present invention, a first silyl group represented by general formula (1): R 1 a Si(OR 2 ) 3-a O- (in the formula, R 1 is a substituted or unsubstituted alkyl group or phenyl group having 1 to 10 carbon atoms, R 2 is an alkyl group having 1 to 4 carbon atoms or an alkoxyalkyl group having 1 to 4 carbon atoms; and a is from 1 to 3), and a second silyl group represented by general formula (2): R 3 b Si(OR 4 ) 3-b O- (in the formula, least one of R 3 is an alkyl group having 1 to 3 carbon atoms, substituted by any of an amino group, an aminoalkyl group or an alkylamino group; R 4 is an alkyl group having 1 to 4 carbon atoms; and b is 1 or 2) are bound to the surface of colloidal silica; and the dispersion medium is a mixed solvent in which the mass ratio (S1/S2) of a polar solvent S1, having a relative permittivity at 20°C of not less than 15 but less than 60, and a non-polar solvent S2, having relative permittivity at 20°C of not less than 1 but less than 15, is 0.3-6.

    摘要翻译： 在本发明中，由通式（1）表示的第一甲硅烷基：R1aSi（OR2）3-aO-（式中，R1是取代或未取代的具有1至10个碳原子的烷基或苯基，R2是 碳原子数为1〜4的烷基或碳原子数为1〜4的烷氧基烷基，a为1〜3）和通式（2）所示的第二甲硅烷基：R 3 b Si（OR 4）3-b O- （式中，R 3中的至少一个为碳原子数1〜3的烷基，被氨基，氨基烷基或烷基氨基中的任一个取代，R 4为碳原子数1〜4的烷基，b 是1或2）结合到胶体二氧化硅的表面; 分散介质为混合溶剂，其中在20℃下具有不小于15但小于60的相对介电常数的极性溶剂S1与非极性溶剂S2的质量比（S1 / S2） 在20℃下具有不小于1但小于15的相对介电常数为0.3-6。