Patent · US Active

Nitrogenous polymers for metal surface treatment

US7879158B2 · kind B2 · utility

4Cited by

6References

7Claims

0Family size

Assignee

BASF SE

Inventors

Frank Dietsche · Schriesheim, DE
Helmut Witteler · Monsheim, DE
Matthias Kluglein · Ludwigshafen, DE
Frank Klippel · Ludwigshafen, DE

Key dates

Filing date	Mar 12, 2004
Grant date	Feb 1, 2011
Priority date	—
Expiry date	Jul 28, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05D7/54
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to a passivating layer on a metal surface, obtainable by contacting the metal surface with a composition comprising a water-soluble nitrogenous polymer, to a surface composed of a metal surface and the passivating layer of the invention, to a process for forming a passivating layer on a metal surface, to the use of a composition comprising a water-soluble nitrogenous polymer to passivate a metal surface, and to a system on a metal surface that comprises a passivating layer of the invention and further coating films.

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