CCP Changchun BF-17 (1799) Medium-Viscosity Fully Hydrolyzed Polyvinyl Alcohol for Cotton Sizing & Paper Coating

Full Name: CCP Changchun BF-17 Medium-Viscosity Fully Hydrolyzed Polyvinyl Alcohol (Model 1799) Benchmark medium-viscosity fully hydrolyzed grade with strong adhesion to hydrophilic natural fibers such as cotton & viscose; water & abrasion resistant size film widely used for pure cotton textile and high water-resistance industrial paper making. Core Technical Parameters Viscosity (4% aqueous solution, 20℃) 25~30 mPa·s Degree of Hydrolysis  95~97 mol% (BF-17W) / 98.5~99.2 mol% (Standard BF17) Appearance   White pellets / powder (BF17E pellet type, BF17 powder type) Volatile Content ≤5.0 % Ash Content   ≤0.7 % pH Value (4% aqueous solution) 5~7 Purity ≥99.0 % Standard Package 20kg/bag CAS No. 9002-89-5   Core Advantages 1.  Fully hydrolyzed film owns far better water & abrasion resistance than BP series; less size shedding after washing of pure cotton fabric. 2.  Excellent affinity to cotton, viscose & rayon; stiff & smooth sized yarn with low breakage rate during weaving. 3.  No delamination or collapse after water contact for water-resistant paper coating & waterproof cardboard forming. 4.  High bonding strength of water-based wood waterproof adhesive without debonding under humid environment. 5.  Good barrier property of film after emulsion polymerization, oil & water resistance for packaging printing. Main Application Fields Core Applications: Pure cotton / viscose fiber warp sizing, high water-resistance industrial paper coating, waterproof cardboard adhesive Compatible Fields: Water-resistant water-based wood adhesive, casting refractory binder, economical outdoor water-based varnish Forbidden Scenarios: Oral food raw materials, ambient-temperature low-temperature dissolving production lines, pure polyester chemical fiber sizing (weak adhesion)