Patent · US Active

Metal pretreatment with acidic aqueous compositions comprising silanes

US10053583B2 · kind B2 · utility

0Cited by

4References

17Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

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

Key dates

Filing date	Feb 4, 2016
Grant date	Aug 21, 2018
Priority date	—
Expiry date	Aug 25, 2036

Classification

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

Abstract

The invention is directed to an acidic aqueous metal pretreatment solution that comprises amino-functional organosilanes, complex anions of the elements Zr, Ti, Hf and/or Si as well as oxyacids of phosphorus; 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 to reduce corrosion when applied to metal surfaces and in addition confer good adhesion properties for subsequently coated organic lacquers.

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