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    • 5. 发明申请
    • MULTI-LAYER COATING FILMS
    • 多层涂膜
    • WO2012113781A1
    • 2012-08-30
    • PCT/EP2012/052916
    • 2012-02-21
    • CYTEC AUSTRIA GMBHSCHIPFER, RudolfFEOLA, RolandKUTTLER, Ulrike
    • SCHIPFER, RudolfFEOLA, RolandKUTTLER, Ulrike
    • B05D7/00B05D7/14C09D5/44
    • H01B5/00B05D7/14B05D7/542C09D5/4442C25D13/22Y10T428/31554Y10T428/31565
    • The invention relates to a process for the preparation of a multi-layer coating film on an electrically conductive substrate, comprising the steps of electrodepositing on an electrically conductive substrate, a first coating composition to form an uncured electrodeposition coating film, applying an aqueous primer-surfacer coating composition to form an uncured intermediate coating film, and then simultaneously heating the substrate coated with the said coating films and curing both the uncured electrodeposition coating film and the uncured intermediate coating film to form a cured film, wherein the curing agent B is a capped isocyanate where the capping agents are selected from the group consisting of aliphatic linear or branched diols, hydroxyalkyl(meth)acrylates and >NH functional heterocyclic aliphatic or aromatic compounds, to coating films made by this process, and to substrates covered with such coating films.
    • 本发明涉及一种在导电基材上制备多层涂膜的方法,包括以下步骤:电沉积在导电基材上,第一涂料组合物形成未固化的电沉积涂膜, 表面涂料组合物以形成未固化的中间涂层膜,然后同时加热涂覆有所述涂膜的基材并固化未固化的电沉积涂膜和未固化的中间涂膜以形成固化膜,其中固化剂B为 封端的异氰酸酯,其中封端剂选自脂肪族直链或支链二醇,羟基烷基(甲基)丙烯酸酯和> NH官能杂环脂族或芳族化合物,通过该方法制备的涂膜以及用这种涂膜覆盖的基材 。