Coated filters
AssigneeJohnson Matthey Public Limited Company
InventorsKaneshalingam Arulraj, Thomas Hotchkiss, David Marvell, Stuart Reid
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Abstract
The present disclosure relates to a powder coated article for filtering particulate matter from exhaust gases. The powder coated article comprises a coated monolith article, and a powder coating on the coated monolith article. The coated monolith article is a monolith article coated with an on-wall washcoat, and the powder coating comprises an inorganic particle and a silicone resin in a ratio of between 50:1 to 1:9. The present disclosure also relates to a method forming said powder coated article.
Claims10
A powder coated article, said powder coated article comprising:
- a) a coated monolith article, and
- b) a powder coating on the coated monolith article,
- wherein said coated monolith article is a monolith article coated with an on-wall washcoat, and said powder coating comprising an inorganic particle and a silicone resin in a ratio, by weight, of between 50:1 to 1:9;
- wherein the coated monolith article is a coated catalytic wall-flow filter having a plurality of inlet channels and a plurality of outlet channels;
- wherein at least 50% of washcoat in the inlet channels of the coated monolith article is present on-wall;
- wherein the silicone resin has a melting point of less than 150° C. and a d90 (by volume) of between 0.1 μm and 100 μm.
Dependencies are inferred from the claim text.