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发明授权
CN104395004B 涂覆基材的金属表面的方法和根据所述方法涂覆的物体 有权

涂覆基材的金属表面的方法和根据所述方法涂覆的物体
摘要：
本发明涉及涂覆表面的方法、相应的涂层和根据该方法涂覆的物体的用途。根据本发明，通过用于涂覆基材的金属表面的方法解决了所述问题，所述方法包括如下步骤或由如下步骤组成：I.提供具有清洁过的金属表面的基材，II.使金属表面与分散体形式或/和悬浮体形式的含水组合物接触和进行涂覆，IX.任选地冲洗所述有机涂层和X.干燥或/和烘焙所述有机涂层或XI.任选地干燥所述有机涂层并在干燥或/和烘焙之前用类似的或另外的涂料组合物进行涂覆，其特征在于：在步骤II中，用分散体或/和悬浮体形式的含水组合物进行涂覆，其中将至少一种阴离子聚电解质以基于所得混合物的总质量计0.01‑5.0重量%的量加入到成膜聚合物分散体和/或成膜无机颗粒悬浮体中，其中所述分散体或悬浮体的固体含量为2‑40重量%和平均粒度为10‑1000nm，其中所述含水组合物具有4‑11范围的pH值和形成基于潜离子化凝胶的涂层，该凝胶结合由金属表面溶解出的阳离子并且所述阳离子源自预处理阶段或/和源自步骤II中的接触。
摘要（英）：

A method and composition for coating surfaces, a corresponding coating and the use of objects coated according to said method. A cleaned, metallic surface is contacted with an aqueous composition that is a dispersion or suspension, and drying and/or baking the organic coating or optionally, drying the organic coating and coating with an equivalent or additional coating composition prior to a drying and/or baking. The aqueous composition has a pH of 4 to 11 and contains an anionic polyelectrolyte in a quantity of 0.01 to 5.0 wt. % relative to the total mass of the composition, which may have a solids content of from 2 to 40 wt. %. The solids have an average particle size from 10 to 1000 nm. A coating forms on the basis of an ionogenic gel which binds cations released from the metallic surface that originate from a pretreatment stage or from the contacting.

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