Patent · US Active

Metal pretreatment compositions comprising silanes and organophosporus acids

US10106689B2 · kind B2 · utility

1Cited by

4References

18Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Michael Wolpers · Erkrath, DE
Juergen Stodt · Neuss, DE
Uta Sundermeier · Leichlingen, DE
Qi Zhang · Beijing, CN
Junjun Wan · Shanghai, CN

Key dates

Filing date	Feb 4, 2016
Grant date	Oct 23, 2018
Priority date	—
Expiry date	Mar 1, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C2222/20
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The object of the underlying invention consists of an acidic aqueous metal pretreatment solution that comprises amino-functional organosilanes and organophosphorus acids. These types of metal pretreatment solutions effectively reduce temporary corrosion when applied to metal surfaces and in addition confer good adhesion properties for subsequently coated organic lacquers. The invention consequently also encompasses a process for the treatment of metal substrates, especially selected from zinc and zinc-coated steel substrates, wherein metal pretreatment solutions of this invention are applied.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.