How can solid sulfonated polyester (pellets) be dispersed?
Polyester that is highly sulfonated is water-dispersible. These products are sold under the name, Eastman AQ&trade polymers. A dispersion is prepared by mixing the solid material (pellets) in hot water at 71°C (160°F) or higher with agitation for about 30 minutes for most Eastman AQ&trade products. After cooling, the dispersion will remain stable as long as the concentration does not go above 30% weight for most Eastman AQ&trade water-dispersible polyesters. An exception to this is Eastman AQ&trade 48 polymer which should be dispersed at a maximum temperature of 50°C. When using Eastman AQ&trade 48 polymer in formulations that are intended to remain clear, the Eastman AQ&trade 48 polymer dispersion should be used as soon as possible to make the final formulation.
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