An object of the present invention is to find a primer coating composition for aluminum wheels, the composition having excellent stability and being capable of forming a coating film having excellent corrosion resistance, edge corrosion resistance, and filiform corrosion resistance. The invention provides (1) a primer coating composition for aluminum wheels comprising a copolymer resin (A), and 1 to 30 parts by mass of fumed silica (B) and 0.1 to 10 parts by mass of a magnesium-containing phosphoric acid-based compound (C), per 100 parts by mass of the total solids content of the copolymer resin (A). The invention also provides (2) the primer coating composition for aluminum wheels according to Item (1), further comprising 0.1 to 10 parts by mass of metal-ion exchanged silica (D), per 100 parts by mass of the total solids content of the copolymer resin (A).


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    Titel :

    Primer coating composition for aluminum wheels


    Beteiligte:
    MATSUDA HIDEKI (Autor:in) / HOMMA HIROE (Autor:in)

    Erscheinungsdatum :

    2018-12-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    C09D Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke , COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS / B60B VEHICLE WHEELS , Räder für Fahrzeuge / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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