Water-wettable silylated metal oxides

摘要

A method for the production of part of a hydrophobic metal oxide, characterized in that the metal oxide with I) organosilane of the formula # # str1 # # R¹_nSix_{4 - n} where n = 1, 2 or 3 means or mixtures of these organosilanes, where r¹ a singly or multiply unsaturated, monovalent, optionally halogenated hydrocarbon radical having 1 to 24 c - atoms and in this case can be the same or different and x = halogen, nitrogen radical, or², Ocor², O (ch₂)_xOr², where r² Hydrogen or a monovalent hydrocarbon radical having 1 to 12 c - atoms means and x = 1, 2, 3 means or Ii) organosiloxane built up from units of the formula (R¹₃Sio_1/2) and / or (R¹₂Sio_2/2) and / or where r¹ has the above meaning, wherein the number of these units in an organosiloxane at least 2, and i and ii alone or in any desired mixtures in a total amount of 0,015 mmol / g to 0,15 mmol / g per of an inserted metal oxide - surface area of 100 m²/g bet - surface (measured according to the bet method according to din 66131 and 66132) is silylated.