Engelhard Corporation

Basf Catalysts LLC

Victor Rosynsky

Gary A Gramiccioni

Masaki Funabiki

Tomoya Takahashi

Kenneth W Blamble

Tunehisa Kawauchi

Brent C Bibbee

Jerry D Cornelius

Ralph A Quigley

Joseph Charles Dettling

Chung-Zong Wan

John M Collins

Thomas Shimrock

Paul J Takacs

Michael G Koubek

Theodore M Caridi

Paul Grabenstetter

Douglas Min

A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath, it is rotated 180&#xb0;. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.

Method for catalyst coating of a substrate

The present invention is directed to a method of coating a substrate, such as a honeycomb having a plurality of parallel channels defined by the honeycomb walls. The honeycomb has different zones along the length of the channels. The zones are defined by their coating (or lack of coating) and extend for a length of the channel in which there is the same coating and architecture. Soluble components in coating compositions are fixed in their respective zones by forcing a heated gas stream through the channels.

Method of manufacturing monolithic catalysts

A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath it is rotated 180&#xb0;. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.

Method for applying a catalyst composition to the interior of a hollow substrate

A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath, it is rotated 180&deg;. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.

System for catalytic coating of a substrate

A method of drying a coated monolithic substrate by imposing a vacuum at one end of the substrate to draw volatilized constituents out of the channels and by delivering a gas stream through the other end of the substrate during the drying process.

Method for drying a coated substrate

A method for coating a substrate having a plurality of channels with a coating media in which the substrate is partially immersed into a vessel containing a bath of the coating media with the volume of coating media lying above the end of the immersed substrate being sufficient to coat the substrate to a desired level. A vacuum is then applied to the partially immersed substrate at an intensity and time sufficient to draw the coating media upwardly from the bath into each of the channels to form a uniform coating profile therein.

Method for coating a substrate

Method and apparatus for coating catalytic converter substrates with an exact amount of a precious metal. In the course of operation of the apparatus, a hollow substrate to be treated having opposed open ends is transferred from a starting location such that one end is lowered into a dip pan into which has been introduced a predetermined amount of slurry material containing the precious metal. With the one end immersed in the slurry, a vacuum placed on the other end of the substrate draws up the entire charge of slurry from the dip pan to coat the lower portion of the substrate. Thereafter, the substrate is raised from the dip pan. The vacuum continues to operate to cause the coating to be evenly distributed on all the interior surfaces of the substrate. Then the substrate is rotated and again lowered so that the other end is immersed in another predetermined charge of the slurry and the process is repeated. Thereupon, the substrate is again raised from the dip pan. Again, the vacuum continues to operate for a predetermined period of time to assure even distribution of the coating. Then the substrate is again rotated to its original orientation, and returned to its starting location.

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Ewing, NJ, United States of America

Victor Rosynsky