| abstract |
The present invention provides an acid-resistant filter that is more excellent in heat resistance, chemical resistance, durability, etc. in a harsh acidic atmosphere, and particularly suitable for a bag filter. A fiber filter material composed of a woven fabric or a nonwoven fabric is coated with a silane coating agent mainly composed of a compound represented by Formula 1, and the silane coating agent is cured and solidified by the action of a catalyst. A chemical-resistant filter characterized by (In Formula 1, R 1 , R 2 , R 3 and R 4 are the same or different, and are a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents a number of 2 to 10) [Selection figure] None |