Method of applying zinc-rich primer and product
US4346143A · kind A · utility
19Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1977 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Nov 7, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved process for providing corrosion protection to ferrous metal substrates is disclosed. The improved process involves a first treating of the surface of the ferrous metal substrate with nitric acid followed by directly applying to the previously treated surface a zinc-rich coating composition. Upon curing the zinc-rich coating composition, an adherent electroconductive coating is formed. The coating provides excellent corrosion protection and since it is electroconductive, the coating is weldable and can accept a subsequent electrocoat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.