Method for coating apparatuses and parts of apparatuses for the construction of chemical installations

US6783807B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stephan Huffer · Birkenfeld, DE
• Thilo Krebs · Mannheim, DE
• Klaus-Dieter Hungenberg · Birkenau, DE
• Ingolf Kühn · Schmerbach, DE
• Ekkehard Jahns · Weinheim, DE
• Christian Lach · Bad Dürkheim, DE
• Harald Keller · Ludwigshafen, DE
• Andreas Pfau · Ludwigshafen, DE
• Thomas Frechen · Heidelberg, DE
• Bernd Diebold · Wemding, DE
• Peter Dillmann · Insheim, DE

Key dates

• Filing date: Sep 26, 2002
• Grant date: Aug 31, 2004
• Expiry date: Oct 11, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12944
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The surfaces of apparatuses and apparatus parts for chemical plant construction, including, for example, apparatus, container and reactor walls, discharge apparatuses, fittings, pumps, filters, compressors, centrifuges, columns, heat exchangers, dryers, comminuting machines, internals, packings and mixing elements, are coated by a process wherein protuberances having a mean height of from 100 nm to 50 &mgr;m with a mean spacing of from 100 nm to 100 &mgr;m are produced on the surface to be coated and the coating is applied thereon by currentless deposition of a metal layer or of a metal-polymer dispersion layer with the aid of a plating bath which contains a metal electrolyte, a reducing agent and optionally a polymer or polymer blend to be deposited, in dispersed form.