Evonik patents a method for coating substrates

April 13, 2012

U.S. 8,105,656 B2
Evonik Degussa GmbH has obtained a patent for a method of coating a substrate comprised of the steps of providing a substrate; applying a composition to at least one side of the substrate, the composition contains an inorganic compound which contains at least one metal and/or semimetal selected from the group Sc, Y, Ti, Zr, Nb, V, Cr, Mo, W, Mn, Fe, Co, B, Al, In, Tl, Si, Ge, Sn, Zn, Pb, Sb, Bi or a mixture thereof and at least one element selected from the group Te, Se, S, O, Sb, As, P, N, C, Ga or a mixture thereof; drying the composition applied in the second step; applying at least one coating to the at least one side of the substrate to which the composition was applied in the second step, the coating contains a silane of the general formula (Z1)Si(OR)3, in which Z1 is R, OR or Gly (3-glycidyloxypropyl) and R is an alkyl radical having from 1 to 18 carbon atoms, wherein all radicals R are identical or different, oxide particles selected from the oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce or a mixture thereof, a polymer, and an initiator, and drying the coating applied in step, wherein the polymer is at least one polymer selected from the group consisting of a polyamide, a polyester, an epoxy resin, a melamine-formaldehyde condensate, a urethane-polyol resin and a mixture thereof.