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    • 38. 发明授权
    • Two-part aqueous metal protection treatment
    • 两部分水性金属保护处理
    • US06902766B1
    • 2005-06-07
    • US09627312
    • 2000-07-27
    • Helmut W. Kucera
    • Helmut W. Kucera
    • C23C22/07C09D7/12C09D161/06C09J5/02C23C22/00C23C22/08C23C22/34C23C22/48C23C22/83B05D3/02
    • C23C28/00C08K5/16C09D7/63C09D161/06C09J5/02C23C22/08
    • A two-part metal protection composition includes: an aqueous metal treatment conversion coating component that includes an admixture of an acid and a coating forming component; and an aqueous protective coating component that is applied over metal treated with the aqueous metal treatment conversion coating component and includes an admixture of a blister suppressing agent and an organic film forming protective component. The aqueous metal treatment conversion coating component may contain an accelerator, such as hydroxylamine. In a preferred embodiment, the blister suppressing agent is an organic oxidizing agent that includes one or more of nitroguanidine; aromatic nitrosulfonates, Naphthol Yellow S; and picric acid (trinitrophenol). A method for treating a metallic surface includes: (a) applying an aqueous metal treatment conversion coating component described above; and (b) applying an aqueous protective coating component, described above, to the surface that has at least been partially treated with the aqueous metal treatment conversion coating component. A method for bonding an elastomeric substrate surface to a metallic substrate surface includes: (a) applying an aqueous metal treatment conversion coating component, described above, to the surface; (b) applying an aqueous coating or primer composition, described above, to the surface that has at least been partially treated with the aqueous metal treatment conversion coating component; and (c) applying an adhesive overcoat to effect bonding of the metallic substrate to the elastomeric substrate.
    • 两部分金属保护组合物包括:含水金属处理转化涂层组分,其包含酸和涂层形成组分的混合物; 以及水处理保护涂层组分,其被施加在用金属处理转化涂层组分处理的金属上,并且包括起泡抑制剂和有机膜形成保护组分的混合物。 含水金属处理转化涂层组分可含有促进剂如羟胺。 在优选的实施方案中,泡罩抑制剂是包含硝基胍中的一种或多种的有机氧化剂; 芳香族亚磺酸盐,萘酚黄S; 和苦味酸(三硝基苯酚)。 处理金属表面的方法包括:(a)施加上述金属处理转化涂层组分; 和(b)将如上所述的水性保护涂层组分施加到至少已经用含水金属处理转化涂层组分部分处理的表面。 将弹性体基材表面粘合到金属基材表面的方法包括:(a)将上述水性金属处理转化涂层组分涂覆到表面; (b)将上述水性涂料或底漆组合物施加到至少已经用含水金属处理转化涂层组分部分处理的表面; 和(c)施加粘合剂外涂层以实现金属基材与弹性体基材的结合。