| 摘要 |
The invention relates to coating agents, containing (A) at least 50 wt. %, (in relation to the content of non-volatile substances in said coating agent), of at least one compound (A1) and/or (A1') comprising at least two reactive groups of formula (I):-X-SiR''x(OR')3-x, in which R' = hydrogen, alkyl or cycloalkyl, whereby the carbon chain can be interrupted by non-adjacent oxygen, sulphur or NRa groups, Ra = alkyl, cycloalkyl, aryl or aralkyl, X = a linear and/or branched alkene or cycloalkene group comprising between 2 and 20 carbon atoms, R'' = alkyl, cycloalkyl, aryl or aralkyl, whereby the carbon chain can be interrupted by non-adjacent oxygen, sulphur or NRa groups, and x = 0 to 2, (B) a catalyst for cross-linking the-Si(OR')3-x units, and (C) an organic solvent or a mixture of organic solvents. According to the invention, during the curing of the coating agents, the reactive groups (I) are cross-linked in such a way, that the following characteristics are noted during the nanoindentation test on the cured coating: elastic recovery of volume > 86.5 %; plastic deformation < 3.5 %; brittle deformation < 10.0 %.
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