What makes the ink in the edding permanent markers waterproof?

In addition to solvents, the permanent inks contain dyes, pigments and binders. It is the binders that are necessary to bond the ink on the respective surface. They contain different components and depending on the properties to be fulfilled, the basic recipe is extended. Which binders are used depends on various factors, but we cannot name them because the binders are part of the secret of the recipe.

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