Method for Manufacturing Colored Aluminum Product or Colored Aluminum Alloy Product, Pigment Composition for Coloration, and Colored Aluminum Product or Colored Aluminum Alloy Product
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United States of America Patent
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Sep 12, 2017
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Sep 29, 2011
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A method for manufacturing a colored aluminum product or a colored aluminum alloy product includes the following steps of (i) subjecting a substrate made of aluminum or aluminum alloy to an anodic oxidation in a treatment solution containing phosphoric acid to form an anodic oxidation film having a plurality of pores on a surface of the substrate, (ii) treating the substrate with warm water having a temperature between 40 and 100° C., and (iii) immersing the substrate in a pigment composition for coloration includes pigment particles, a dispersing agent and water to fill the pigment particles into a plurality of the pores in the anodic oxidation film on the surface of the substrate, thereby performing coloration.
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