Process for preparation of inorganic fluorine-containing protective coatings using a coating composition obtained by hydrolysis and polycondensation silanes useful for coating metal substrates, e.g. in steel, Cu, Cr, Al or Mg

摘要

Process for preparation of inorganic fluorine-containing protective coatings using a coating composition obtained (sic) by hydrolysis and polycondensation of one or more silanes is new. A process for preparation of inorganic fluorine-containing protective coatings using a coating composition obtained (sic) by hydrolysis and polycondensation of one or more silanes of formula (I) or an oligomer derived from the silane and one or more fluorsilanes of formula (II) or an oligomer derived from it. HnSiX4-n (I) FnSiX4-m (II) X = hydrolysable groups, n = 0, 1, or 2, m = 1 or 2.