Patent · US Active

Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes

US7905964B2 · kind B2 · utility

2Cited by

1References

13Claims

0Family size

Assignee

BASF SE

Inventors

Helmut Witteler · Monsheim, DE
Walter Bertkau · Ludwigshafen, DE
Thomas Heidenfelder · Münstermaifeld, DE
Alexander Gothlich · Mannheim, DE

Key dates

Filing date	Jun 13, 2006
Grant date	Mar 15, 2011
Priority date	—
Expiry date	Sep 24, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/12007
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Process for the passivation of metallic surfaces, in particular of strip metals, by treatment of the surface with an acidic, aqueous preparation which comprises at least one water-soluble acid group-containing polymer and at least one wax.

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