Natrosol 250 GWR Hydroxyethylcellulose 9004-62-0 Hercules-Aqualon Colloidal stabilizers / Dispersing agents >> Cellulose ether Rheology Modifiers / Thickeners >> Cellulosic >> Hydroxyethyl cellulose (HEC) ADHESIVE >> Water-based NATROSOL® 250 water soluble hydroxyethylcellulose NATROSOL® 250 hydroxyethylcellulose (HEC) is a series of off-white powders that are easily dispersed and dissolved in cold or hot water, to produce solutions of varying viscosities. Chemically, it is cellulose of short to very long chain length that has been etherified to a hydroxyethyl ether to achieve an optimum balance of properties. NATROSOL 250 is used as a viscosity and rheology modifier, protective colloid, water retention agent, stabilizer, and suspending agent, particularly in those applications where a nonionic material is desired. The types of NATROSOL 250 differ in their solution viscosity, hydration behaviour, biostability, and particle size: the "R"-types have been treated to delay hydration of the particles. This treatment prevents lumping as the powder is added to water. Specified below are the viscosity ranges of these types. These ranges also apply to: NATROSOL 250 hydroxyethylcellulose is a granular powder that dissolves readily in water to give clear, smooth solutions, which exhibit a pseudoplastic flow behaviour. At neutral pH and ambient temperatures, NATROSOL R-grades disperse without lump formation and provide easy dissolution. These solutions are unaffected by high concentrations of soluble salts. Viscosity is little affected by mild acids and alkalies. Because of its nonionic character NATROSOL has wide compatibility with other materials, such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers. NATROSOL 250 is used as high efficiency nonionic thickener, water retention aid and rheology modifier in all types of water-based paints and surface coatings, in adhesives, and in a variety of other aqueous industrial products. Regular NATROSOL 250 imparts excellent flow properties to these systems. As a protective colloid and stabilizer NATROSOL performs outstandingly in the emulsion and suspension polymerization of many vinyl polymers. Its unique combination of properties explains its use in pigment dispersions and in tile adhesives. In toothpaste the lean solvent solubility and compatibility of NATROSOL contribute consistency, its dispersibility and binding power are widely appreciated by the cosmetic and pharmaceutical industry. Adhesives Wallpaper adhesives Thickening and lubricity Latex adhesives Thickening and water-binding Plywood adhesives Thickening and solids holdout Water soluble hydroxyethylcellulose. Used as a viscosity and rheology modifier, protective colloid, water retention agent, stabilizer, and suspending agent, particularly in applications where a nonionic material is desired. Treated to delay hydration of the particles. Offers compatibility with other materials, such as emulsion polymers, natural and synthetic gums, emulsifiers, defoamers. Used as nonionic thickener, water retention aid and rheology modifier in water-based adhesives. Imparts very good flow properties. Performs in the emulsion and suspension polymerization of many vinyl polymers. Applications : tile, wallpaper, latex and plywood adhesives.