Polyvinyl Alcohol PVA 2488 (CAS 9002‑89‑5) is a partially hydrolyzed polymer with a degree of hydrolysis of 87‑89 mol % and a viscosity of 35‑45 mPa·s at 20 °C. The water‑soluble resin forms clear, flexible films, making it an excellent thickener and protective colloid in water‑based paint systems. Its low acidity (≤0.7 %) and high molecular weight provide superior emulsion stability, improve substrate adhesion and increase the mechanical durability of coatings. The polymer contains abundant hydroxyl groups that form hydrogen bonds with water and with other polar components such as acrylic, epoxy or urethane resins, which enhances its role as a binder in pigment dispersions and as a co‑binder in high‑performance coatings. When blended with acrylic or epoxy resins, PVA 2488 reduces film shrinkage, increases flexibility, and promotes rapid drying while maintaining high tensile strength. In the paint industry it is used in emulsion paints, primers, clear coats and specialty coatings where fast cure and good film integrity are required. In the paper sector PVA 2488 serves as a binder for surface coatings, laminating films and specialty paper grades, improving tear resistance, moisture barrier properties and dimensional stability. In construction mortars it acts as an additive that enhances cement paste adhesion to reinforcement, improves workability and raises water resistance of the cured product. The polymer is also a key component of PVA adhesives for wood, ceramics and textiles, delivering strong bonds even under high humidity conditions. For optimal performance the material should be stored in a dry, cool environment between 5 °C and 25 °C, protected from direct sunlight and moisture. Handling requires protective gloves, safety glasses and adequate ventilation. The product is packed in airtight 25 kg polypropylene bags to preserve its properties during transport. In paint formulations it is often combined with acrylic resins to achieve high‑elasticity finishes, while in the paper industry it enhances tensile strength and moisture resistance. The polymer remains chemically stable up to 180 °C, allowing use in high‑temperature processes without degradation.
| Степень гидролиза | 87–89 мол.% |
| Вязкость (4%, 20°C) | 35–45 мПа·с |
| Зольность | ≤0.7% |
Bags 25 kg
To maintain the performance of PVA 2488, store the material in a dry, well‑ventilated area at ambient temperatures (approximately 15 °C–30 °C) away from direct sunlight and heat sources. The typical shelf life is 12–24 months provided the packaging remains intact; moisture ingress can degrade viscosity and film‑forming properties. Handle with protective gloves and safety glasses, avoid premature exposure to water, and reseal containers tightly after each use to preserve product integrity.
