Biaxially oriented, single- or multilayer polyester film having an adhesion promoter coating based on a copolyester and an anchor component

摘要

The invention relates to a polyester film provided with a coating at least on one side, wherein the coating is the drying product of an aqueous dispersion, the composition of which comprises not only water but also at least one copolyester component and one silane component, wherethe copolyester component is formed to an extent of 3 to 35 mol % of a monomer unit bearing sulfonate groups, and is present in the dried coating in a proportion of 40-85% by weight, andthe silane component bears vinyl groups or methacryloyl groups, and also alkoxy groups, and is present in the dried coating to an extent of 15-60% by weight. The invention further relates to a process for production thereof and to the use thereof.