Evonik TEGOMER® DA 640 Dispersant

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Evonik TEGOMER® DA 640 Dispersant
Categories:	Other Engineering Material
Material Notes:	Product description: TEGOMER® DA 640 is an anionic modified polyether to be used for the following main application: dispersing of fillers as well as of inorganic and organic pigments in water-based systems flocculation of inorganic pigments or fillers emulsifier for the polymerization Application: TEGOMER® DA 640 is a liquid dispersing additive used for surface wetting to improve dispersion properties of: inorganic fillers e. g. talc, barium sulfate inorganic pigments e. g. titanium dioxide, Ultramarine blue, iron oxides organic pigments and carbon blacks can be dispersed as well with higher addition levels TEGOMER® DA 640 is suitable at lower addition levels to be used as flocculent for inorganic particles only, e. g. titanium dioxide, metal hydroxides TEGOMER® DA 640 is a primary or secondary emulsifier for the polymerization of acrylates or PVAc. Benefits: The use of TEGOMER® DA 640 offers several advantages in dependence on the function used: higher filling of pastes at low addition levels in combination with excellent rheological properties and no occurrence of gelling higher color strength respectively improved hiding power for titanium dioxide pastes improved water repellency which goes parallel with the flocculation ability of high density materials improved durability due to hydrophobic character when used for surface treatment less abrasion of doctor blades using filler or titanium dioxide pastes for the application of paper coatings water-based formulations which contain significant amounts of glycol or other solvents can be stabilized as well solvent- and nonylphenol ethoxylate-free emulsifier technology pure acrylates as well as those with high EHA content for adhesive formulation reach fine particle size distribution if it is used as emulsifier water pick up of emulsions and pigments/ fillers is lowered Information provided by Evonik
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Available Properties
pH Viscosity

Property Data

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Manufacturer Notes:
Evonik Corporation (Former Evonik Degussa GmbH)

Category Notes
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