Phosphatized and painted metal articles
US4143205A · kind A · utility
8Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/273
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Metal substrates, and particularly ferrous metal substrates, are now protected by having on their surface composite coatings wherein the base coating comprises a water-insoluble phosphatized coating from an organic phosphatizing composition. Over the phosphatized base coating there is then deposited a topcoating that is typically a paint topcoating. However, a rinse coating, such as a chromic acid solution, may be used on the base coating prior to a paint coating. A highly desirable adherent, corrosion-resistant and water-insoluble composite coating thereby protects the substrate metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.