Kuraray POVAL PVA-205 Partially Hydrolyzed Polyvinyl Alcohol 88% Hydrolysis Low Viscosity High-Solids Cold-Water Dispersible Adhesive Coating Grade

Full Name & Product Positioning Full Product Name:  Kuraray POVAL™ PVA-205 Partially Hydrolyzed Polyvinyl Alcohol PVA-205 is a general-grade polyvinyl alcohol in the Kuraray POVAL™ series, featuring partial hydrolysis (86.5-89.0 mol%) and low viscosity (4.6-5.4 mPa·s). Its partially hydrolyzed structure provides cold-water dispersibility and fast hot-water dissolution; its low degree of polymerization results in low aqueous solution viscosity, allowing preparation of higher-solids solutions. It is widely used in coatings, adhesives, emulsion polymerization protective colloids, and emulsifier applications requiring high solids, low viscosity, and fast dissolution. The difference from PVA-205MB is that this product does not contain a defoaming component. Core Technical Parameters Parameter Typical Value Product Type Partially hydrolyzed polyvinyl alcohol Viscosity (4% aqueous soln., 20°C) 4.6 - 5.4 mPa·s Degree of Hydrolysis 86.5 - 89.0 mol% Volatile Matter ≤5.0 wt% pH (4% aqueous soln.) 5.0 - 7.0 Appearance White granular solid CAS Number 9002-89-5 Standard Packaging 20kg/bag Key Advantages (Performance based on measured conditions from original manufacturer TDS. Actual results vary with formulations and do not guarantee end-use performance.) 1.  Partially hydrolyzed structure provides cold-water dispersibility and fast hot-water dissolution, supporting operational efficiency; 2.  Low viscosity grade allows preparation of higher-solids aqueous solutions (up to 20%+), offering convenient coating and application; 3.  Offers corresponding adhesive strength to cellulosic and porous substrates, with good film flatness; 4.  Can be used as a protective colloid in vinyl acetate emulsion polymerization; low viscosity characteristics help control emulsion particle size and system rheology; 5.  Uniform granules reduce agglomeration during dissolution, and the aqueous solution exhibits high clarity; contains no defoaming component, making it suitable for formulation systems sensitive to defoaming agents. Main Application Areas Core Applications:  High-solids coatings, low-viscosity adhesives, emulsion polymerization protective colloids, emulsifiers Compatible Applications:  Paper surface sizing, inkjet printing media coatings, film surface treatment, paper converting adhesives, construction additives Not Recommended For:  Food or oral-ingestion articles, high-speed stirring scenarios requiring low-foam characteristics (PVA-205MB is recommended), high-adhesive-strength structural adhesives