Aqueous coating compositions based on self-dispersing epoxy resins

A process for the production of coatings, characterized in that a composition consisting of

• A) 0.5 to 90% by weight epoxy resins which are solid at 20° C. and self-dispersing in water,
• B) 0.5 to 90% by weight (meth)acrylates of a polyol,
• C) 5.0 to 99.0% by weight water and
• D) 0 or 0.1 to 3% by weight organic solvent,
• with the following provisos:
• the (meth)acrylates B) contain at least 2 reactive (meth)acrylic groups per molecule,
• the sum of the percentages by weight of components A) to D) is 100% by weight and
• the Brookfield viscosity of the composition (as measured at 23° C.) is less than 15,000 mPas.
• is contacted with
• E) 1 to 200% by weight water-dilutable hardeners—% by weight hardeners based on the epoxy resins A) and
• F) 0 to 90% by weight other additives and/or processing aids—% by weight component F) based on the total quantity of all components,
• and the resulting mixture is brought into the required shape and allowed to cure.

The use of compositions consisting of

• A) 0.5 to 90% by weight epoxy resins which are solid at 20° C. and self-dispersing in water,
• B) 0.5 to 90% by weight (meth)acrylates of a polyol,
• C) 5.0 to 99.0% by weight water and
• D) 0 or 0.1 to 3% by weight organic solvent,
• with the following provisos:
• the (meth)acrylates B) contain at least 2 reactive (meth)acrylic groups per molecule,
• the sum of the percentages by weight of components A) to D) is 100% by weight and
• the Brookfield viscosity of the composition (as measured at 23° C.) is less than 15,000 mPas.
• for the production of coatings.