PROCESS FOR THE PREPARATION OF A MULTI-LAYER COATING, WATER COATING COMPOSITES, DILUIVABLE POLYACRYLATE RESIN IN WATER AND PROCESS FOR THE PREPARATION OF DILUTABLE POLYACRYLATE RESINS IN WATER

摘要

The invention relates to a process for producing a multi-layer coating in which the aqueous coating compound contains water-dilutable polyacrylate resin having a hydroxyl count from 40 to 200, an acid count of 20 to 100 and a glass transition temperature (TG) of -40 to +60 DEG C, which can be made by adding a mixture (I) of a (meth)acrylic acid ester and a copolymerisable monomer containing hydroxyl groups to an organic solvent and radically polymerising it and, at the end of the addition process, adding a monomer containing carboxyl groups to the mixture (I) and further polymerising it.