SUBSTRATES WITH BIOCIDAL AND/OR ANTIMICROBIAL PROPERTIES Russian patent published in 2011 - IPC A01N59/16 A01N25/34 B05D7/00 A01P3/00 A01P1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing materials which are efficient with respect to biocidal and antimicrobial properties. The following steps are performed: b) applying the composition onto at least one side of a substrate. The composition contains an inorganic compound selected from a group comprising TiO₂, Al₂O₃, SiO₂, ZrO₂, Y₂O₃, BC, SiC, Fe₂O₃, SiN, SiP, aluminium silicate, aluminium phosphate, zeolites, partially substituted zeolites or mixtures thereof, c) drying the composition applied on step b), d) applying at least one coating onto at least one side of the substrate on which the composition was applied on step b). The coating contains silane with general formula (Z¹)Si(OR)₃, where Z¹ denotes R, OR or Gly (Cly=3-glycidyloxypropyl) and R is an alkyl residue with 1-18 carbon atoms, and all R may be identical or different; oxide particles selected from a group comprising oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce or mixtures thereof, an acid or base as an initiator and, if needed, zinc, zinc salt, silver, silver salt, e) drying the coating applied on step d), f) applying at least one additional coating on at least one side of the substrate on which the coating was applied on step d), where the additional coating contains silane with general formula (Z¹)Si(OR)₃, where Z¹ denotes R, OR or Gly (Gly=3-glycidyloxypropyl), and R is an alkyl residue with 1-18 carbon atoms, and all R may be identical or different; an antimicrobial and/or biocidal substance selected from a group comprising Zn, zinc salt, Zr, Ag, silver salt, Sn, Sn compound or mixtures thereof, and an acid or base as an initiator, g) drying the additional coating applied on step f).

EFFECT: invention enables to obtain coatings with biocidal properties on flexible substrates.

33 cl