Chromium-free coating composition with anti-corrosive effect for metallic substrates

US11186730B2 · kind B2 · utility

Inventors

• Hubert Theil · Shanghai, CN
• Andre Brosseit · Hamm, DE
• Hendrik Narjes · Ascheberg, DE
• Thorsten Gelbrich · Munster, DE
• Justina Muehlmeyer · Bad Iburg, DE
• Andrea Hoene · Warendorf, DE

Key dates

• Filing date: Nov 29, 2017
• Grant date: Nov 30, 2021
• Expiry date: Aug 17, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/39
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present disclosure relates to a chromium-free coating composition including at least one binder and at least one iron(III)-tris(N,N-dithiocarbamate) complex, where the binder includes at least one synthetic resin and at least one crosslinker. The present disclosure also relates to the use of such a coating composition for the protection against corrosion of metallic substrates, a process for at least partially coating a metallic substrate with such a priming coat, a substrate at least partially coated therewith and an article or a component made of such a substrate.