METHOD OF COATING SUBSTRATES Russian patent published in 2011 - IPC C09D5/00 B05D7/00 C09D5/02 C09D183/05 C09D7/12 

FIELD: chemistry.

SUBSTANCE: substrate is nonwoven material and the method involves steps for applying a composition in form of an aqueous suspension onto at least one side of the substrate. The composition contains silane, an initiator and an inorganic compound and the initiator is an aqueous acid or base, and the inorganic compound contains at least one metal and/or semimetal. The composition is then dried first at room temperature and then at 200°C after 10 seconds. Further, at least one coating composition is applied onto at least one side of the substrate on which the composition was already applied during the previous step. The coating composition contains silane of general formula (Z¹)Si(OR)₃, where Z¹ denotes R, OR or Gly (Gly=3- glycidyloxypropyl) and R denotes an alkyl having 1-18 carbon atoms and all R can be identical or different, oxide particles selected from oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce or mixtures thereof, epoxy resins and an aqueous acid or base as the initiator. The coating composition is dried for 30 minutes at 120°C.

EFFECT: very high flexibility of coated substrates without destroying or cracking the applied coating.

15 cl, 2 ex