Method for treatment of electrodeposition bath
US5021135A · kind A · utility
6Cited by
7References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Oct 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D13/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a method for electrocoating an electrically conductive surface serving as an electrode, which method comprises passing an electrical current between the electrically conductive surface to be electrocoated and a counter electrode in contact with an electrodeposition bath comprising a synthetic resin ionically dispersed in an aqueous medium, wherein improvement comprises (a) adding a complexing agent, and then (b) removing at least a portion of the complexing agent along with metals coordinated therewith from the bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.