Borchi Nox M2 delays the onset of drying of clear lacquers without affecting through-drying. In wrinkle-finish paints containing oil, Borchi Nox M2 exhibits very good anti-skinning action without adversely affecting wrinkle formation. In stoving paints based on binders which dry by oxidation, Borchi Nox M2 prolongs the open time of the film, thereby preventing flow problems and blistering. Borchi Nox M2 does not cause yellowing or discoloration and exhibits no undesirable reactivity in finished paint systems.