Apparatus having a metallic surface protected from undesired deposition of polymer

US6461440B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Heinz Friedrich Sutoris · Bischofswerda, DE
• Gerhard Wagenblast · Wachenheim, DE
• Jürgen Schröder · Ludwigshafen, DE
• Harald Keller · Ludwigshafen, DE
• Rainer Rahm · Ludwigshafen, DE
• Jürgen Decker · Speyer, DE
• Thomas Jaworek · Kallstadt, DE
• Volker Schliephake · Schifferstadt, DE

Key dates

• Filing date: Mar 31, 2000
• Grant date: Oct 8, 2002
• Expiry date: Mar 31, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/0245
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An article having a metallic surface treated with polymeric complexing agent is described. Particularly suitable polymeric complexing agents are phosphonoalkylated polyethyleneimines and/or carboxyalkylated polyethyleneimines and/or vinylimidazole polymers. As a rule, the treated metallic surface forms the total inner surface or a part of the inner surface of a process apparatus or of a container. The surface is protected by the treatment, in particular from the adhesion of polymer.