Bentone EW Elementis Rheology Modifiers / Thickeners >> Cellulosic >> Hydroxyethyl cellulose (HEC) Rheology Modifiers / Thickeners >> Organoclay >> Hectocrite SEALANT BENTONE EW rheological additive is a specially processed hectorite clay gellant. Its fine particle size makes it readily dispersible in aqueous systems using conventional high speed dispersers. ADVANTAGES Viscosity Stability and Reproducibility in Emulsion and Water Soluble Systems. Prevents Pigment Settling. Rapid Water Release. Film Reinforcement Through its Unique Gel Lattice Structure. Full Color Development of Both Organic and Inorganic Pigments. Insolubility in Water Provides Outstanding Resistance to Water Spotting. No Loss of Thixotropy Upon Heating. Very Low Water Sensitivity. Effective Over a Wide pH Range (Primarily 6.0 - 11.0 pH). CERAMICS Ceramic Slurries • Improves Plasticity of Mix. • Recommended for Both Molding and Casting Methods. OTHER Textile Finishes Backings For Carpets, Curtains And Shades Draperies Printing Inks Cleaners And Polishes Buffing Compounds INCORPORATION BENTONE® EW additive should be introduced in the initial dispersion phase. Complete hydration in water (tepid) prior to addition of the other ingredients is a prerequisite for developing its excellent rheological properties. The recommended procedure is to disperse the additive in water until the gel structure is developed. (This requires at least 15 minutes.) The remaining ingredients can then be added (vehicle, pigment etc.) in the usual order. This product does not require a minimum activating temperature in the mill and is not heat sensitive. Full development of the gel structure must be achieved through adequate shearing. The preparation of high concentrations (5-10%) of BENTONE EW in water can be achieved by including 10 to 12% of isopropyl alcohol. If neutralizing agents are required for the formulation, they should be added to the BENTONE EW dispersion followed by addition of vehicle. In latex systems, the standard mill base ingredients are added to the dispersed BENTONE EW additive according to normal procedure. The latex base is then usually added at the let-down stage. An alternate approach is to prepare a masterbatch of BENTONE EW in water, dispersing under high shear to form a smooth gel. These predispersions can be prepared with relative ease in concentrations up to 5%; a preservative is recommended. RECOMMENDED LEVELS In non-latex systems, it is suggested that BENTONE EW additive be incorporated at 0.3% to 1% based on total system weight. In latex systems, it should be evaluated at levels from one half to full replacement of the polymeric or cellulosic thickener. SYNERGISM WITH RHEOLATE® 1 RHEOLOGICAL ADDITIVE When used in combination with RHEOLATE 1 rheological additive frequently there is a thickening efficiency superior to either product used. It is recommended that BENTONE EW and RHEOLATE 1 be used in combination on a 1 to 1 ratio based on solids. Example: 2 lbs. BENTONE EW (in the dispersion phase) +6.6 lbs. (2.0 lb. solids) RHEOLATE 1 in the letdown. Refer to RHEOLATE 1 literature for guidelines in using this product. As with any new chemical substance, it's recommended that the Material Safety Data Sheet be reviewed prior to use. Hectorite clay gellant rheological additive. Readily dispersible in aqueous systems using conventional high speed dispersers. Can be used in mastics/sealants. Provides viscosity stability and reproducibility in emulsion and water soluble systems, film reinforcement, full color development of pigments, outstanding resistance to water spotting. Prevents pigment settling. Recommended level: 0.3% to 1% based on total system weight in non-latex systems, and from one half to full replacement of the polymeric or cellulosic thickener in latex systems.