ASE-60 Rheology Modifier can be added to the mill-base, to the letdown, or as a post addition without affecting performance properties, as long as the medium is sufficiently alkaline during the incorporation and sufficient mixing is available.Supplied as a low viscosity emulsion, ASE-60 Rheology Modifier is easy to pump or pour and therefore very suitable for bulk handling and/or automatic metering equipment. ASE-60 Rheology Modifier can be incorporated at different stages of formulation, provided that enough base is available to neutralise the thickener and additional base is used to adjust pH. In all cases it is recommended to add ASE60 Rheology Modifier diluted 1:1 with water.Adding ASE-60 Rheology Modifier as one of the final ingredients in the letdown is convenient in the laboratory to determine the approximate amount of thickener that will be needed to achieve the desired viscosity, or in the plant to make final viscosity adjustments. Addition of ASE-60 Rheology Modifier in this manner assumes reasonably good agitation in the vessel. Less than ideal mixing can be compensated for, in many cases, by adding the thickener emulsion more slowly. In any case the addition of the appropriate amount of base prior to the ASE-60 Rheology Modifier is essential in order to avoid reduction in pH and subsequent pigment flocculation.
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