| abstract |
The present invention relates to an agent for coating metals for protection against corrosion, which DOLLAR A (i) a sol based on silicon compounds, DOLLAR A (ii) at least one aminoalkyl-functional alkoxysilane and / or DOLLAR A (iii) at least one reaction product of the components ( i) and (ii) contains DOLLAR A, the total content of aminoalkyl-functional silane component from (ii) and (iii) being from 0.01 to 15% by weight, calculated as the aminoalkoxysilane used in each case and based on the SiO2 ΒΆ content of the sol according to (i), a process for the preparation of such an agent and its use. |