WHITE TRIVALENT CHROMIUM PLATING BATH AND WHITE TRIVALENT CHROMIUM PLATING METHOD FOR OBJECT TO BE PLATED USING SAME
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United States of America Patent
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Issued Date -
Oct 24, 2024
app pub date -
Jul 26, 2022
filing date -
Jul 26, 2022
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Abstract
A white trivalent chromium plating bath including a trivalent chromium compound, a complexing agent, a sulfate serving as a conductive salt, a pH buffering agent, and one type or two or more types of sulfur-containing organic compounds represented by the following general formula (I) (in which R represents —H, —NH2, —OH, —CH3, —(CH2)n—CH3, or —(CH2)n—COOH, n represents an integer of 1 to 4, and X and Y each independently represent CH2, C═O, or C═S), and a white trivalent chromium plating method using the white trivalent chromium plating bath enable a high plating deposition rate in the trivalent chromium plating bath, and provide an appearance suitable for decorative applications.
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