Electrodeposition of an iridescent chromium coating
Abstract
Abstract THIS INVENTION RELATES TO NOVEL COMPOSITIONS AND TO A PROCESS OF PREPARING AN IRIDESCENT CHROMIUM PLATED ARTICLE WHICH COMPRISES PASSING CURRENT FROM AN ANODE TO A METAL CATHODE THROUGH AN AQUEOUS CHROMIUM PLATING SOLUTION WHICH CONTAINS AT LEAST ONE CHROMIUM COMPOUND PROVIDING HEXAVALENT CHROMIUM METAL IONS FOR ELECTROPLATING CHROMIUM AND: (A) AS FIRST ADDITIVE COMPOSITION AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALKYL SULFONIC ACID, A HALOALKYL SULFONIC ACID, AN AKYL PHOSPHONIC ACID, A HALOALKYL PHOSPHONIC ACID, AND SATS THEREOF; AND (B) AS SECOND ADDITIVE COMPOSITION AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC ACIDS OF FROM 1-3 CARBON ATOMS, HALOGEN SUBSTITUTED CARBOXYLIC ACIDS OF FROM 1-3 CARBON ATOMS, AND SALTS THEREOF; TO PRODUCE AN IRIDESCENT CHROMIUM SURFACE ON SAID ARTICLE.
Inventors
- 👤 H Chessin
- 👤 P Walker
Bibliographic Details
Claims Analysis
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