| US 7,597,935 B2 | ||
| Process for preparing chrome surface for coating | ||
| Qihua Xu, Grand Rapids, Mich. (US); Ling Hao, Grand Rapids, Mich. (US); Lawrence P. Donovan, III, Lowell, Mich. (US); Roger J. Timmer, Lowell, Mich. (US); Lee A. Chase, East Grand Rapids, Mich. (US); Trevor R. Nicholas, Grand Rapids, Mich. (US); and David P. Hartrick, Lowell, Mich. (US) | ||
| Assigned to Lacks Enterprises, Inc., Grand Rapids, Mich. (US) | ||
| Filed on May 06, 2002, as Appl. No. 10/140,230. | ||
| Prior Publication US 2003/0205481 A1, Nov. 06, 2003 | ||
| Int. Cl. B05D 7/00 (2006.01); B05D 3/02 (2006.01) | ||
| U.S. Cl. 427—409 [427/327; 427/388.1; 427/407.1; 427/421.1; 427/435] | 50 Claims |
| 1. A process for depositing a polymer coating on a chrome substrate, comprising:
immersing the chrome substrate in an acid solution;
applying a DC current to the chrome substrate while the chrome substrate is immersed in the acid solution, and selecting an
electrical potential whereby the chrome substrate is made anodic while immersed in the acid solution, the application of the
DC current being conducted under conditions sufficient to prevent formation of chromium oxide or chromium hydroxide at the
surface of the substrate and to cause dissolution of chromium ions from the surface;
removing the chrome substrate from the acid solution, and rinsing the chrome substrate with water;
contacting the rinsed chrome substrate with a silane solution;
drying the chrome substrate after contacting the chrome substrate with the silane solution; and
applying a polymer coating to the dried chrome substrate.
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