Kuraray POVAL PVA-124 Fully Hydrolyzed Polyvinyl Alcohol 98-99% Hydrolysis Medium-High Viscosity Water-Resistant Coating Fiber Grade

Full Name & Product Positioning Full Product Name: Kuraray POVAL  PVA-124 Fully Hydrolyzed Polyvinyl Alcohol PVA-124 is a fully hydrolyzed (98-99 mol%), medium-high viscosity (54-66 mPa·s) polyvinyl alcohol in the Kuraray POVAL™ series. Its fully hydrolyzed structure results in strong intermolecular hydrogen bonding, producing films with relatively high tensile strength, oil resistance, and organic solvent resistance. It is suitable for fiber, paper coating, and adhesive applications requiring high film strength and solvent resistance. Fully hydrolyzed PVA requires hot water for dissolution and is insoluble in cold water. Core Technical Parameters Parameter Typical Value Product Type Fully hydrolyzed polyvinyl alcohol Viscosity (4% aqueous soln., 20°C) 54 - 66 mPa·s Degree of Hydrolysis 98.0 - 99.0 mol% Volatile Matter ≤5.0 wt% Ash (as Na₂O) ≤0.4 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.  Fully hydrolyzed structure with strong intermolecular hydrogen bonding provides film tensile strength, oil resistance, and organic solvent resistance superior to partially hydrolyzed grades; 2.  Medium-high viscosity grade delivers high aqueous adhesive strength and good film toughness; 3.  Offers corresponding adhesive strength and sizing performance for fiber substrates (cotton, polyester, vinylon); 4.  Fully hydrolyzed PVA films exhibit relatively good oxygen barrier properties and can be used as intermediate layers in barrier packaging materials; 5.  When combined with crosslinking agents such as borax, water-resistant gels can be formed, suitable for special coatings requiring water resistance. Main Application Areas Core Applications:  Textile sizing (high-tenacity yarns), water-resistant paper coatings, PVA fiber raw material Compatible Applications:  Barrier packaging films, woodworking adhesives, ceramic binders, adhesives requiring solvent resistance Not Recommended For:  Food or oral-ingestion articles, scenarios requiring cold-water instant dissolution, formulations without heating conditions for room-temperature application