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Technical Paper -
An aqueous pre-dispersed form of fumed silica is available in both acidic and alkaline forms as well as with cationic modification. These dispersions are useful in low VOC coatings, as they do not contain organic solvents or surfactants. The fumed silica dispersions provide improved sag resistance, reduced film cracking, improved film hardness, reduced dirt pick-up and reduced film tack. ...