Non-chromate metallic surface-treating agent, method for surface treatment, and treated steel material
US6475300B2 · kind B2 · utility
20Cited by
4References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C2222/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-chromate metallic surface treating agent comprising (a) a silane coupling agent and/or a hydrolytic condensation product thereof, (b) water-dispersible silica, and (c) a zirconium compound and/or a titanium compound, and further comprising (d) a thiocarbonyl-containing compound and/or (e) a water-soluble acrylic resin is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.