Basf Aktiengesellschaft

Bernd Diebold

Stephan H&uuml;ffer

Thilo Krebs

Axel Franke

Peter Dillmann

Ekkehard Jahns

Harald Keller

Wolfgang Loth

Klaus-Dieter Hungenberg

Bernd Rumpf

Stephan Scholl

Christian Lach

Thomas Frechen

Andreas Pfau

Ingolf K&uuml;hn

Joachim Nilges

J&uuml;rgen Sturm

Qi Zhao

Hans Mueller-Steinhagen

Juergen Korkhaus

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.

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

The present invention relates to a process for coating apparatuses and apparatus parts for chemical plant construction&mdash;which are taken to mean, for example, apparatus, tank and reactor walls, discharge devices, valves, pumps, filters, compressors, centrifuges, columns, dryers, comminution machines, internals, packing elements and mixing elements&mdash;wherein a metal layer or a metal/polymer dispersion layer is deposited in an electroless manner on the apparatus(es) or apparatus part(s) to be coated by bringing the parts into contact with a metal electrolyte solution which, in addition to the metal electrolyte, comprises a reducing agent and optionally the polymer or polymer mixture to be deposited in dispersed form, where at least one polymer is halogenated.

Method for coating apparatuses and parts of apparatuses used in chemical manufacturing

The invention relates to a process for the production of a heat transfer device, which comprises electroless chemical deposition of a metal/polymer dispersion layer, in which the polymer is halogenated, on a heat transfer surface. The invention furthermore relates to a process for the production of a heat transfer device, wherein a metal/phosphorus layer with a thickness of from 1 to 15 &mgr;m is applied by electroless chemical deposition before application of the metal/polymer dispersion layer. The invention furthermore relates to a heat transfer device which can be produced by a process according to the invention, and to the use of a coating, produced by electroless chemical deposition of a metal/polymer dispersion layer, in which the polymer is halogenated, for reducing the tendency of the coated surfaces to accumulate solids from fluids, causing fouling.

Heat exchanger with a reduced tendency to produce deposits and method for producing same

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Fussgönheim, Germany

Bernd Diebold