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Aqueous composition for pretreatment of a metal surface before further coating or for treating said surface
Aqueous composition for pretreatment of a metal surface before further coating or for treating said surface
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机译：用于在进一步涂覆之前预处理金属表面或用于处理所述表面的水性组合物
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摘要
The present invention relates to an aqueous composition for pretreating a metallic surface before further coating or for treating said surface. The aqueous composition is obtained by adding a) at least [one] sodium, potassium, and/or ammonium water glass and b) at least one silane to water. The quantity ratio of a) to b), in each case including the resulting reaction products, is preferably in the range of 0.1:1 to 2:1.
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