| 摘要 |
The invention relates to a method for producing multilayer varnishes comprising (A) a first chromophore and/or effect-producing varnish, (B) a second chromophore and/or effect-producing varnish, and (C) a transparent varnish, by application of aqueous coating substances (A) and (B) and a coating substance (C) to (i) non-primed substrates, or (ii) substrates coated with an unhardened primer (G), or (iii) substrates coated with a hardened primer (G), and common hardening of the wet layers (A), (B) and (C) and optionally the unhardened primer (G). The coating substance (A) contains: (a.1) a (co)polymer or a graft copolymer that can be produced by the (co)polymerisation of a (co)polymerisable monomer (a.1.1) containing an olefinically unsaturated groups or at least two comonomers (a.1.1) in the presence of a polyurethane (a.1.2) selected from the group consisting of polyurethanes that do not contain any copolymerisable, olefinically unsaturated group, and polyurethanes containing lateral and/or copolymerisable, olefinically unsaturated groups, and optionally by partial or complete neutralisation (a.2), in addition to chromophore and/or effect-producing pigments, (a.3) pigments absorbing UV radiation, and (a.4) talc.
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