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    Process for applying a lead-free coating to untreated metal substrates via electrodeposition
    5.
    发明授权
    Process for applying a lead-free coating to untreated metal substrates via electrodeposition 失效
    通过电沉积将未经处理的金属基材施加无铅涂层的方法

    公开(公告)号：US06168868A

    公开(公告)日：2001-01-02

    申请号：US09309850

    申请日：1999-05-11

    申请人： Brian T. Hauser ,  Richard F. Karabin ,  Thor G. Lingenfelter

    发明人： Brian T. Hauser ,  Richard F. Karabin ,  Thor G. Lingenfelter

    IPC分类号： C23C2800

    CPC分类号： C23C22/34 ,  C25D13/20 ,  Y10T428/31678

    摘要： An improved process for applying a lead-free coating by electrodeposition to an untreated ferrous metal substrate is provided. The substrate need not be phosphated prior to treatment. The process includes the following steps: a) contacting the substrate surface with a group IIIB or IVB metal compound in a medium that is essentially free of accelerators needed to form phosphate conversion coatings; followed by b) electrocoating the substrate with a substantially lead-free, curable electrodepositable composition; and c) curing the electrodepositable composition. The group IIIB or IVB metal compound is preferably a zirconium compound and is typically in an aqueous medium. The process may further include initial steps of cleaning the substrate with an alkaline cleaner and rinsing with an acidic rinse. Substrates treated by the process of the present invention demonstrate excellent corrosion resistance.

    摘要翻译： 提供了一种通过电沉积施加到未处理的黑色金属基底上的无铅涂层的改进方法。 在处理之前，基板不需要磷化。 该方法包括以下步骤：a）在基本上不含形成磷酸盐转化涂层所需的促进剂的介质中使基材表面与IIIB或IVB族金属化合物接触; 随后b）用基本上无铅的可固化的可电沉积组合物电镀基材; 并且c）固化可电沉积组合物。组IIIB或IVB金属化合物优选是锆化合物，并且通常在水性介质中。该方法还可以包括用碱性清洁剂清洁基底并用酸性漂洗物冲洗的初始步骤。 通过本发明的方法处理显示出优异的耐腐蚀性。

    Electrocoating compositions containing polyvinylpyrrolidone crater control agents
    6.
    发明授权
    Electrocoating compositions containing polyvinylpyrrolidone crater control agents 失效
    含有聚乙烯吡咯烷酮火山口控制剂的电涂组合物

    公开(公告)号：US6132581A

    公开(公告)日：2000-10-17

    申请号：US298101

    申请日：1999-04-22

    申请人： Alan J. Kaylo ,  Thor G. Lingenfelter

    发明人： Alan J. Kaylo ,  Thor G. Lingenfelter

    IPC分类号： C09D5/44 ,  C25D13/00

    CPC分类号： C09D5/4492

    摘要： Disclosed are electrodepositable coating compositions containing a polymer prepared from the polymerization of an ethylenically unsaturated monomer having a heterocyclic ring containing at least one ring nitrogen atom bonded to a vinyl group or a mixture of monomers comprised of such a monomer, the compositions further including contaminants capable of forming defects in the electrodeposited coating surface. The polymer is present in an amount effective to abate formation of the surface defects caused by the contaminants. A method of electrocoating a conductive substrate using the electrodepositable coating compositions of the invention is also disclosed.

    摘要翻译： 公开了一种电沉积涂料组合物，其含有由烯键式不饱和单体的聚合制备的聚合物，该烯属不饱和单体具有含有至少一个与乙烯基键合的环氮原子的杂环或由该单体构成的单体混合物，该组合物还包括能够 在电沉积涂层表面形成缺陷。 聚合物以有效减少由污染物引起的表面缺陷形成的量存在。 还公开了使用本发明的可电沉积涂料组合物对导电基材进行电涂覆的方法。