|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B01D-053/00 F01N-003/021 B01D-053/94 B01J-023/40 B01J-023/42 B01J-037/02 F01N-003/035 B01J-021/06 B01J-035/00|
|§371/§102 date||20090220 (20090220)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 0 인용 특허 : 16|
The invention relates to the coating of a particulate filter used in the treatment of exhaust or waste gases. In the manufacturing of the coating according to the invention, there is used a liquid-based sol, where the average particle size of the contained particles is below 100 nm, preferably below 50 nm.
1. A particulate filter used in treatment of exhaust or waste gases, comprising: a coating comprisingi) a first sol, where the average particle size of the particles contained in the first sol is 50-100 nm, the dry matter content is 0.1-30% by weight and the first sol contains at least one oxide mixture selected from the group consisting of: an Al2O3 aluminum oxide and TiO2 titanium oxide mixture, where Al2O3:TiO2=3:1-10:1,an Al2O3 aluminum oxide and SiO2 silicon oxide mixture, where Al2O3:SiO2=1:1-4:1,a CeO2 cerium oxide and ZrO2 zirconium oxide mixture...