Rheolate 420 Elementis Rheology Modifiers / Thickeners >> Alkali-Swellable Acrylic polymers (ASE/ HASE) SEALANT ADHESIVE >> Water-based RHEOLATE 420 rheological additive is an economical and versatile alkali swellable thickener in an easy-touse liquid emulsion form designed to fully or partially replace cellulosic thickeners in a variety of water-borne systems. RHEOLATE 420 rheological additive provides a high thickening efficiency in the medium shear rate range and also provides an excellent balance between sag resistance and leveling properties. RHEOLATE 420 contributes to high shear rate viscosity and provides greater brush drag properties compared to cellulosic thickeners. Other water-borne systems: adhesives sealants RHEOLATE 420 rheological additive features and benefits are: Excellent Pseudoplastic Rheology develops package viscosity efficiently imparts antisettling properties reduces syneresis yields excellent spray properties provides easy brushability provides tight roller pattern Excellent Paint Performance reduces spattering during roller application provides excellent sag resistance provides good leveling performance Excellent Film Properties maintains gloss levels provides good block resistance provides good scrub resistance improves corrosion resistance reduces early blistering in acrylic systems Enzyme Resistance resists viscosity loss re-thickens enzyme-spoiled paint Incorporation low viscosity liquid - easily incorporated pH activated reduces paint preparation time avoids handling viscous liquids or dry powders Compatibility compatible with clay-based, cellulosic and associative thickeners Incorporation Proper pH Adjustment RHEOLATE 420 is an alkali swellable thickener and requires proper pH adjustment with ammonia or AMP- 95 for complete activation. In a typical latex paint, a pH of at least 8.0 is recommended. In certain vinyl acrylic paints where pH has a tendency to drift downward, the use of Calcium Carbonate or Wollastonite extenders will help maintain pH during aging. Levels of Use The typical levels of use for RHEOLATE 420 are 0.1% to 2.0% by weight, in paints or inks and up to 9% in adhesives and sealants. Alkali swellable thickener designed to replace cellulosic thickeners in water-borne adhesives and sealants. Provides a high thickening efficiency in the medium shear rate range and a good balance between sag resistance and leveling properties. Provides good pseudoplastic rheology, good film properties, enzyme resistance. Compatible with clay-based, cellulosic and associative thickeners.