Cellosize QP-300 Hydroxyethyl cellulose Dow Chemical Rheology Modifier/ Thickener >> Cellulosic, non associative >> Hydroxyethyl cellulose (HEC) Acrylic/Acrylate Resins Vinyl Coatings >> Waterborne Architectural / Decorative General Industrial /Maintenance Soluble in hot or cold water CELLOSIZE™ QP 300 hydroxyethyl cellulose (HEC) is a medium-low molecular weight cellulosic polymer used as both a protective colloid and a latex paint thickener. In the emulsion polymerization of vinyl and acrylic monomers to produce latexes for architectural coatings, the typical use level of CELLOSIZE QP 300 HEC in latex synthesis is 2% by weight (based on total monomers) in vinyl and vinyl-acrylic latex formulations (usually less in all-acrylic formulations). The nearly Newtonian behavior of aqueous solutions of CELLOSIZE QP 300 HEC make it an ideal thickener in premium quality latex paints, giving paints with good flow and leveling characteristics. The typical use levels of CELLOSIZE QP 300 HEC in latex paints are between 5 and 8 pounds per 100 gallons. CELLOSIZE QP 300 HEC is also used in cement as a fluid loss additive. paints and coatings Medium-low molecular weight cellulosic polymer. Used as a protective colloid and a latex paint thickener. Can be used in the emulsion polymerization of vinyl and acrylic monomers to produce latexes for architectural coatings. Provides good flow and leveling characteristics.