Method of coating honeycomb bodies with finely divided solid matter

US5165970A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Felix Schmidt · Baldegg, CH
• Wilfried Baumgartner · Rheinfelden (Baden), DE
• Reinhard Manner · Maintal, DE
• Gerhard Birtigh · Nidderau, DE
• Ewald Dittrich · Großkrotzenburg, DE

Key dates

• Filing date: Feb 27, 1991
• Grant date: Nov 24, 1992
• Expiry date: Feb 27, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B41/5031
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for the uniform coating of honeycomb bodies with finely divided solid matter from a dispersion in an amount which is below that which arises during customary immersion. To this end, the honeycomb is flooded from below with dispersion, emptied after a dwell time and blown out. Filling time, filling amount, dwell time emptying time as well as the time between emptying and blowing out are measured in such a manner that in order to increase the separated amount of solid matter, filling time, dwell time, pumping-out time and the time between emptying and blowing out are increased but the filling amount is reduced.