Method for coating metallic surfaces
US6893687B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2001 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Nov 5, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/067
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for coating metallic surfaces by wetting one such surface with an aqueous dispersion containing, in addition to water, at least one UV-cross-linkable, water-soluble and/or water-dispersible resin, at least one wax as a deforming additive, at least one photoinitiator and at least one corrosion inhibitor. The coating is dried and hardened after being formed on the metallic surface. The invention is characterised in that the coating that is formed is up to 10 μm thick when hard, and in that during a condensation water test according to DIN 50017 KFW carried out directly after over 240 hours, said coating shows no signs of corrosion >5% on a test surface having been deformed by a mandrel with a diameter of 3.2 mm to 38 mm during a mandrel bending test according to DIN ISO 6860 without cracking the test surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.