Process for the demulsifying cleaning of metallic surfaces

US9731331B2 · kind B2 · utility

Assignee

• CHEMETALL GMBH · DE

Inventors

• Stella Bauerochse · Pforzheim, DE
• Carola Komp · Mörfelden, DE
• Ralph Van Den Berg · Achim, DE
• Peter Claude · Bad Vilbel, DE
• Franz Dressler · Wiesbaden, DE
• Joachim Geldner · Friedrichsdorf, DE
• Zafer Yuksel · Remchingen, DE
• Eckart Schonfelder · Idstein, DE

Key dates

• Filing date: Jul 2, 2014
• Grant date: Aug 15, 2017
• Expiry date: May 1, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/16
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The demulsifying cleaning of metallic surfaces which may be contaminated with oil(s) with at least one further nonpolar organic compound, with fat(s), with soap(s), with particulate dirt or with at least one anionic organic compound using an aqueous, alkaline, surfactant-containing bath solutions.