Zinc being an auxiliary drier, used in conjunction with redox metals.
The primary function of zinc is to keep the
film "Open" by retarding Surface dry, thus permitting
hardening through out & preventing surface wrinkling, particularly
in Cobalt containing films & enamels.
Zinc is a powerful wetting & dispersing agent, & when
incorporated early in formulation, it greatly reduces the time of
mixing & grinding. Because of the extremely light colour, Zinc can
be added without discoloring the film.
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