FIELD: chemistry.
SUBSTANCE: method comprises (a) depositing without depositing the intermediate pigmentiferous primer-surfacer imparting colour to the base coat composition and (b) depositing a curable unpigmented coat composition on the mentioned base coat layer, wherein the base coat layer is formed by depositing a curable aqueous composition comprising (i) a continuous phase comprising water and (ii) a dispersed phase comprising: (A) polymer particles comprising carboxyl functional group comprising ethylenically unsaturated monomers containing ethylenically multi-unsaturated monomer. Mentioned ethylenically multi-unsaturated monomer is present in an amount of 2-30 wt % based on the total weight of the ethylenically unsaturated monomers and (B) polycarbodiimide.
EFFECT: ensuring base coat composition which is cured during the dehydration stage resulting in a high degree of cure prior to depositing coating varnish, which allows to cure the coating varnish at a lower temperature.
1 dwg, 2 tbl, 4 ex
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