FIELD: chemistry.
SUBSTANCE: invention relates to a glass or ceramic substrate whose surface is protected from organic contamination caused by mastic used as sealant and containing organosilicon material. According to the invention there is a coating on the surface of the substrate which gives a pronounced hydrophilic property and which is in form of crystalline titanium oxide. There is also a silicon migration barrier on the periphery of the substrate. The said barrier can be a projecting edge made from polymer directly in contact with the mastic or several millimetres from the said mastic. The barrier can be made in form of recesses or grooves on the same surface of the substrate opposite the mastic which is a silicon source.
EFFECT: protection of the substrate from contamination and retention of its hydrophilic property.
6 cl, 6 dwg
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