abstract |
The invention relates to chemical compounds, immersion mixtures containing these chemical compounds and their use. The chemical compounds according to the invention belong to the ethoxylated perfluoropolyethers with terminal dialcohols or to the 2,3,3,3-tetrafluoro -2- [1,1,2,3,3,3-hexafluoro-2- (hepta fluoropropoxy) propoxyl] -1-propanols. |