Patent · US Active

Method for treating metallic surfaces with an acidic aqueous composition to improve corrosion resistance

US12043758B2 · kind B2 · utility

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16Claims

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Assignee

SPECIALTY OPERATIONS FRANCE · FR

Inventors

Stefan Birkenheuer · Shanghai, CN
Carina Hecker · Frankfurt am Main, DE
Oliver Sauer · Frankfurt am Main, DE
Daniel Schatz · Stuttgart, DE
Nawel Souad Khelfallah · Frankfurt am Main, DE
Marie-Pierre Labeau · Sèvres, FR
Guillaume Gody · Rueil-Malmaison, FR

Key dates

Filing date	Jul 3, 2019
Grant date	Jul 23, 2024
Priority date	—
Expiry date	Jul 21, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D13/22
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Described herein is a method for treatment of a metallic surface, including the step of contacting the metallic surface with an acidic aqueous composition. Also described herein is an acidic aqueous composition used in the method for treatment, a master batch to produce such acidic aqueous composition, a method of using the acidic aqueous composition to treat metallic surfaces and substrates including the thus treated metallic surfaces.

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