Composite coating steel sheets having good corrosion resistance paintability and corrosion resistance after paint coating
US4411964A · kind A · utility
43Cited by
13References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1981 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Dec 17, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12847
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composite coating steel sheet is disclosed which has good corrosion resistance, paintability and corrosion resistance after paint coating. The steel sheet comprises a plated base steel sheet, such as a galvanized, zinc alloy plated or aluminum plated steel sheet, and a chromate film formed on the plated base steel sheet. A composite silicate resin film is formed on the chromate film. The composite silicate film is composed of a reaction product of a colloidal silica, an organic resin and a silane compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.