METHOD FOR THE MANUFACTURE OF ALUMINIUM ZINC PHOSPHATE HYDRATES OR BASIC ALUMINIUM ZINC PHOSPHATE HYDRATES AND THEIR USE IN PAINTS

摘要

ABSTRACT OF DISCLOSUREAluminium zinc phosphate hydrates or basic aluminium zincphosphate hydrates are manufactured by reacting 1 mole Oraluminium hydrogen phosphate with from 2.4 to 4 moles of zincoxide, if necessary with the addition Or up to 0.4 moles ofOr alkali aluminate or the equivalent quantity Or alkalihydroxide. A 50 % by weight acidic aluminium hydrogen phosphatesolution is preferably used for the reaction which is carriedout at an elevated temperature in the range from 30 to 80 C..The aluminium zinc phosphate hydrates produced by the methodare useful anti-corrosion pigments for use in paints.