Composition and process for treating metal surfaces
US6899770B1 · kind B1 · utility
3Cited by
25References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2000 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Mar 3, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A metal substrate is provided with a coating that (i) provides substantial corrosion resistance, (ii) makes it possible to shape the substrate by roll forming and similar light cold forming operations without the need for any oil or wax lubricant, and (iii) has good adhesion to subsequently applied paint. This is achieved by coating the metal substrate surface with an aqueous liquid composition that contains acrylate polymer resin, wax, and hexavalent chromium and then drying this coating into place on the surface to produce the desired dry coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.