2169-C43_AQUAPASTE2169-C43_pa_pds_formulatingguidelines

The paste should be soaked for one or two hours in about its own weight of a bridging solvent, such as butyl diglycol. Dispersion is then achieved by low energy stirring, using a slow speed blade capable of moving the whole mass. Further solvent, water or medium may be added at this stage. When a smooth consistency, free of soft aggregates has been obtained, the balance of the formulation may be slowly added. High shear should be avoided as it bends and breaks the flakes, reducing their brightness. As the water stability can be system dependent, small-scale trials should be carried out to verify the required level of performance.

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