Paints and coatings:
ZINC IS AN AUXILIARY DRIER. IT FUNCTIONS SYNERGISTICALLY IN THE PRESENCE OF A DRIER SUCH AS COBALT. PRIMARY FUNCTION OF ZINC IS TO KEEP THE FILM OPEN BY RETARDING SURFACE DRY, THUS PERMITTING HARDENING THROUGHOUT & PREVENTING SURFACE WRINKLING, PARTICULARLY IN COBALT CONTAINING FILMS & ENAMELS. It greatly improves the drying performance of other dryers. Zinc possesses profound dispersing and wetting properties, & WHEN INCORPORATED EARLY IN FORMULATION, IT GREATLY REDUCES THE TIME OF MIXING & GRINDING. BECAUSE OF THE EXTREMELY LIGHT COLOUR, ZINC CAN BE ADDED WITHOUT DISCOLOURING THE FILM.