| 摘要 |
1. Coating agent for delustering coatings on transparent surfaces made from glass and plastics, in particular for delustering coatings on viewing screens, made from a thermally curable lacquer and a finely divided pigment based on silicic acid, characterised in that a polysiloxane lacquer, consisting of hydrolysis products of trialkoxysilanes and/or partial condensates of trisilanols, dissolved in lower aliphatic alcohols is used as the lacquer, and a mixture of a silicic acid, prepared thermally in an arc at approximately 3,500 degrees C or by flame hydrolysis at 550 to 1,250 degrees C, and a hydrophobic silicic acid prepared thermally by reacting the silanol groups, is used as the pigment, wherein the silicic acids in total are present in the lacquer in amounts of 0.5 to 15 wt%, and the hydrophobic silicic acid accounts for 5 to 40 wt% of the total silicic acid. |
