Composite coated metal sheet, treatment agent and method of manufacturing composite coated metal sheet
US8475930B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Mar 29, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite coated metal sheet comprising a coated film having a low environmental impact prepared free from hexavalent chromium, and having good corrosion resistance equivalent to that provided by chromate treatment and excellent adhesiveness between the coated film and a resin layer formed on the coated film. Also, a treatment agent and a method of manufacturing the composite coated metal sheet with the treatment agent is described. The composite coated metal sheet comprises a coated film formed on a surface of a plated metal sheet or metal sheet, the coated film contains an oxide and/or a hydroxide of metal other than chromium, and an organic component comprising modified and/or unmodified functional group(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.