Obtains restoration undercoat formation or the resistance crushed stone intermediate undercoat formation in manner and automobile painting which do multilayer paint the manner

摘要

The invention relates to a process for producing multicoat lacquering the base lacquer of which contains crosslinked polymer microparticles. To obtain this lacquering, (A) a polyester polyol or a mixture of polyester polyols is reacted with a polyisocyanate or a mixture of polyisocyanates and (B) at least 25 % of the NCO groups are reacted and the reaction mixture obtained is dispersed in water.