Sol-gel coating for single-layer or multi-layer coatings
1999
The invention relates to a sol-gel coating material, containing (A) an acrylate copolymer solution, consisting of at least one acrylate copolymer (A1); (B) a parent lacquer which can be produced by the hydrolysis and condensation of at least one hydrolysable silane (B1) of the general formula (I): SiR4; wherein the variable R has the following meaning: R = hydrolysable groups, hydroxy groups and non-hydrolysable groups, with the proviso that there should be at least one, preferably at least two hydrolysable groups; and (C) a sol which can be produced by the hydrolysis, condensation and complexing of (C1) at least one hydrolysable metal compound of the general formula (II): MRn; wherein the variables and the index have the following meanings: M = aluminium, titanium or zirconium, R = the aforementioned given groups and n = 3 or 4; of (C2) at least one organic thio compound of the general formula (III): S(R X)2, wherein R represents a two-bond organic radical and X represents hydroxyl, thiol and/or primary and/or secondary amino groups; and of (C3) a hydrolysable silane of the general formula (I).
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