Pretreatment compositions and methods for coating a metal substrate
US9822260B2 · kind B2 · utility
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Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Jun 30, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12806
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed are pretreatment compositions and associated methods for treating metal substrates with pretreatment compositions, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The pretreatment composition includes: (a) a group IIIB and/or IVB metal; (b) free fluorine; (c) a source of aluminum ions; and (d) water. The methods include contacting the metal substrates with the pretreatment composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.