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EP0033457A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for preparing metallic pigments having a metallic gloss

Assignee: BASF SE
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Filing: 1981-01-17
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Granted: —
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Expires: 2001-01-17
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Abstract

Abstract Translated from German Zur Herstellung von metallisch glänzenden Farbpigmenten, die aus einem metallischen Kern, dessen Oberfläche zumindest teilweise mit Oxiden des Eisens belegt ist, oxidiert man Eisententacarbonyl mit Sauerstoff in einer Wirbelschicht aus den metallischen Kernen bei Temperaturen oberhalb 100°C. Die Menge des dampfförmig in die Wirbelschicht eingeführten Eisenpentacarbonyls soll, bezogen auf die insgesamt in der gleichen Zeiteinheit in die Wirbelschicht eingeführten Gase 5 Vol. % nicht übersteigen. To produce shiny metallic color pigments, which consist of a metallic core, the surface of which is at least partially covered with oxides of iron, iron tentacarbonyl is oxidized with oxygen in a fluidized bed from the metallic cores at temperatures above 100 ° C. The amount of iron pentacarbonyl introduced in vapor form into the fluidized bed should not exceed 5% by volume, based on the total amount of gases introduced into the fluidized bed in the same time unit.

Inventors

  • 👤 Werner Dr. Ostertag
  • 👤 Knut Dr. Bittler
  • 👤 Gustav Dr. Bock

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 02:18
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/62; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/80; C01P2004/82; C01P2004/84

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