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    COATING MATERIAL COMPOSITION
    22.
    发明公开
    COATING MATERIAL COMPOSITION 审中-公开

    公开(公告)号：EP4269061A1

    公开(公告)日：2023-11-01

    申请号：EP21910594.7

    申请日：2021-12-16

    Applicant: Kansai Paint Co., Ltd

    Inventor： KOMURA, Katsuto ,  FUJIWARA, Mizuki

    IPC: B29C45/14 ,  B32B27/18 ,  B32B27/30 ,  B32B27/32 ,  C09D4/02 ,  C09D5/24 ,  C09D125/02 ,  C09D133/06 ,  C09D201/00 ,  B29C33/12 ,  B29C70/00 ,  C09D7/61 ,  B32B7/027 ,  C08J7/04

    Abstract: A coating composition containing: (A) a polymerizable unsaturated compound having one polymerizable unsaturated group per molecule and having a hydrocarbon group having from 4 to 24 carbons; (B) a polymerizable unsaturated compound having one polymerizable unsaturated group per molecule and having a hydroxyl group; (C) a polymerizable unsaturated compound having two polymerizable unsaturated groups per molecule, a homopolymer of the compound having a glass transition temperature in a range from 100 to 250°C; (D) a polymerizable unsaturated compound having from 3 to 9 polymerizable unsaturated groups per molecule and containing a linear alkylene group that has a total of 6 to 14 carbons and may contain an ester bond; and (E) a polymerization initiator.

    PRIMING COMPOSITION FOR CREATING A LIGHT ELECTRICALLY CONDUCTIVE PRIMING COATING
    25.
    发明公开
    PRIMING COMPOSITION FOR CREATING A LIGHT ELECTRICALLY CONDUCTIVE PRIMING COATING 审中-公开

    公开(公告)号：EP4253486A1

    公开(公告)日：2023-10-04

    申请号：EP21898796.4

    申请日：2021-11-19

    Applicant: MCD Technologies S.a.r.l

    Inventor： PREDTECHENSKIY, Mikhail Rudolfovich ,  CHEBOCHAKOV, Dmitry Semenovich ,  SHILYAEV, Gleb Evgenievich

    IPC: C09D5/24 ,  C09D5/44 ,  C01B32/158 ,  C09D7/40 ,  C09D7/80 ,  C09D201/00 ,  B82Y30/00

    Abstract: The invention relates to electrically conductive coatings, in particular to electrically conductive priming coatings of parts before they undergo electrostatic painting, as well as to priming compositions for creating such coatings (priming coatings). The present invention proposes a priming composition for creating a light, electrically conductive priming coating on a part prior to electrostatic painting, said priming composition comprising single-wall and/or double-wall carbon nanotubes at a concentration of greater than 0.005 wt.% and less than 0.1 wt.%, and having a degree of grinding of the priming composition of not more than 20 microns. The technical result of applying such a priming composition is a light, electrically conductive priming coating with a specific surface resistance of less than 10 9 Ω/sq and a light reflection coefficient (LRV) of at least 60%. The present invention also proposes a method for preparing a priming composition and a light, electrically conducting priming coating.

    STEEL SHEET AND METHOD FOR PRODUCING SAME
    28.
    发明公开
    STEEL SHEET AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：EP4238764A1

    公开(公告)日：2023-09-06

    申请号：EP21903034.3

    申请日：2021-10-22

    Applicant: JFE Steel Corporation

    Inventor： FURUYA Shinichi ,  AOYAMA Tomohiro ,  KOIBUCHI Shun ,  MATSUDA Takeshi

    IPC: B32B27/30 ,  B32B27/38 ,  B32B27/40 ,  B32B27/42 ,  C09D191/06 ,  C09D201/00 ,  B32B15/08 ,  C23C26/00

    Abstract: An object of the present invention is to provide a steel sheet that has a lubrication film, the steel sheet having low sliding resistance in a portion at risk of cracking when press forming is performed, excellent press formability in a portion in which die galling is considered to occur due to high surface pressure, and excellent press formability, in particular, when the surface roughness of the steel sheet varies over a wide range, and is to provide a method for manufacturing the steel sheet and the like.
    A steel sheet having a film containing an organic resin and a wax on at least one surface of the steel sheet, in which the organic resin is at least one of an acryl-based resin, an epoxy-based resin, a urethane-based resin, a phenol-based resin, a vinyl acetate-based resin, and a polyester-based resin, in which the wax is a polyolefin wax having a melting temperature of 120°C or higher and 140°C or lower and an average particle size of 3.0 um or less, in which a proportion of the wax in the film is 10 mass% or more, and in which a coating weight per side W (g/m 2 ) of the film and an arithmetic average roughness Ra (um) of the steel sheet satisfy relational expression (1) below. W ≥ 0.12 × Ra 2 + 0.2

    MULTILAYERED COATING FILM AND COATED ARTICLE
    29.
    发明公开
    MULTILAYERED COATING FILM AND COATED ARTICLE 审中-公开

    公开(公告)号：EP4227087A1

    公开(公告)日：2023-08-16

    申请号：EP21891627.8

    申请日：2021-10-22

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： YAMANE Takakazu ,  OKAMOTO Keiichi ,  TERAMOTO Kouji ,  NONAKA Ryuji ,  TAMAI Kazuteru ,  KAWASE Eiichi ,  FUJIMOTO Tomohiro ,  NAKAMOTO Takayoshi

    IPC: B32B27/20 ,  B05D1/36 ,  B05D5/06 ,  C09D7/41 ,  C09D7/61 ,  C09D201/00

    Abstract: A multilayer coating film includes a lustrous layer directly or indirectly formed on a surface of a coating target and containing a luster material, and a colored layer stacked on the lustrous layer, containing a reddish coloring agent, and having translucency. For the lustrous layer, when a light incident angle (an angle with respect to a line perpendicular to the surface of the lustrous layer) is 45° and L ∗ (θ) represents the L* value of the lightness index of reflected light measured at a light receiving angle (the angle of inclination toward a light source side from a specular reflection direction) θ, L ∗ (θ) at 45° ≤ θ ≤ 80° and 100° ≤ θ ≤ 110° is 10 or less, and when the luster material is projected onto the bottom surface of the lustrous layer, the percentage of the projected area of the luster material on the bottom surface is 3% or more to 70% or less per unit area.

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