Abstract
AbstractThe effect of various dispersing agents on the interaction between zinc oxide and titanium dioxide in water was investigated. Addition of conventional dispersing agents to suspensions of zinc oxide and titanium dioxide reduces initial viscosities but increases the rate of interaction; however, ethylene glycol reduced interaction. Higher concentrations of dispersing agents caused foaming of the suspensions and caking of the pigments. If organic dispersing agents are replaced by inorganic phosphates, pigment interactions, foaming, and caking can be prevented in suspensions containing as much as 61% solids by weight.
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