Chang Chun CCP BP-20H Polyvinyl Alcohol PVA Intermediate Hydrolysis 90-93% Medium-High Viscosity Adhesive Water-Resistant Coating Grade

Full Name & Product Positioning Full Product Name:  Chang Chun Petrochemical (CCP) BP-20H Intermediate Hydrolysis Polyvinyl Alcohol BP-20H is a polyvinyl alcohol in the Chang Chun BP series with an intermediate degree of hydrolysis (90-93 mol%, between partial and full hydrolysis) and a viscosity of 27-33 mPa·s. Its higher hydrolysis degree provides film water resistance and tensile strength superior to standard partially hydrolyzed grades, while retaining some cold-water dispersibility. It is suitable for adhesives, paper coatings, and textile treatment applications requiring a certain level of water resistance. Core Technical Parameters Parameter Typical Value Product Type Intermediate hydrolysis polyvinyl alcohol Viscosity (4% aqueous soln., 20°C) 27 - 33 mPa·s Degree of Hydrolysis 90 - 93 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.  Intermediate hydrolysis degree (90-93 mol%) provides film water resistance superior to 88% partially hydrolyzed grades, while retaining some cold-water dispersibility; 2.  Medium-high viscosity grade delivers high aqueous adhesive strength and corresponding film toughness and tensile strength; 3.  Suitable for paper coatings, textile sizing, and adhesive applications requiring a certain level of water resistance; 4.  When used in combination with crosslinking agents (e.g., urea-formaldehyde resin, melamine resin), coating water resistance can be further enhanced; 5.  Uniform granules provide good dissolution processability, and the hot-water-dissolved solution exhibits relatively good clarity. Main Application Areas Core Applications:  Water-resistant paper coating adhesives, textile sizing agents, water-resistant adhesives Compatible Applications:  Woodworking adhesives, fiberboard binders, construction additives, coating systems requiring moderate water resistance Not Recommended For:  Food or oral-ingestion articles, scenarios requiring rapid complete dissolution in cold water at room temperature