Surface-catalytically finished polymer fibres and/or polymeric sheets, method for surface-catalytically finishing same, and use thereof for producing an air purification filter

Abstract

The present disclosure relates to a method for surface-catalytically finishing polymer fibres and/or polymeric sheets, said method comprising the steps: a) providing a polymer fibre or a polymeric sheet; b) providing an aqueous dispersion of a catalyst support particle; and c) contacting the polymer fibre or the polymeric sheet with the aqueous dispersion of the catalyst support particle, the method being characterised in that the catalyst support particle has a particle size in a range of between at least 0.5 μm and at most 20 μm, and in that the contacting in step c) takes place at a temperature in a range of between at least 15° C. and at most 60° C. above the glass transition temperature TG of the polyester, and wherein the catalyst support particle is impregnated with a catalytically active metal or metal oxide. The disclosure also relates to: a polyester fibre or polyester sheet with a corresponding finish; and the use of same for producing a filter for particle separation in an air purification system.

Dependencies are inferred from the claim text.