PVA 2688

Product Name: Polyvinyl Alcohol 2688

CAS NO:9002-89-5

H.S.Code:3905300000

Package: 20kg/25kg/800kg/Bags

Appearance: White Granule&owder

PVA 2688 Technical Parameters

ITEM	UNIT	SPECIFICATION
Viscosity	cps	50.0-58.0
Hydrolysis	mol %	86.0-90.0
Volatile	wt %	7.0 Max
Ash	wt %	0.7 Max
pH Value	—	5.0-7.0

PVA 2688 Application

PVA 2688 is a polyvinyl alcohol a higher degree of polymerization, thus exhibiting stronger bonding strength, denser and harder film formation, better water resistance, and tensile strength. Mainly used in high-end industrial scenarios with strict requirements for material performance, widely applied in fields such as textiles, construction, adhesives, and papermaking.

PVA 2688 Used For Textile Industry

In the textile printing and dyeing industry, PVA2688 is the core raw material for high-end warp sizing of high-end fabrics. Specially suitable for sizing ultra-high count high-density yarns (such as high count cotton, silk blended yarn), high-performance synthetic fibers (such as polyester filament, nylon filament), and heavy-duty high-end fabrics (such as high-end denim, canvas, industrial filter cloth).

PVA 2688 Used For Paper Industry

In the paper industry,it is suitable for producing specialty paper and heavy-duty packaging paper. As a surface adhesive, it can be coated on the surface of high-end office paper, copperplate paper, and high-strength kraft paper to form a dense protective film, which can improve the surface strength, water resistance, smoothness, and stiffness of the paper, reduce hair loss and powder loss during high-speed printing, and improve the clarity and aesthetics of printing.

As an internal sizing agent, it is added to the pulp of heavy-duty packaging cardboard and honeycomb cardboard, thereby enhancing the bonding force between paper fibers, making the paper tougher and more resistant to folding, and improving the load-bearing capacity and damage resistance of the cardboard.

PVA 2688 Used For Adhesive Industry

In the adhesive industry, it is the core raw material for producing high-viscosity water-based adhesives. Widely used in the modification of high-end woodworking adhesives, heavy-duty packaging adhesives, urea formaldehyde adhesives/phenolic adhesives. Adding PVA 2688 can significantly improve the adhesive strength, water resistance, and stability, making it suitable for heavy-duty wood splicing, high-strength packaging sealing, and high-demand board bonding.

PVA 2688 Used For Building Materials

In the construction and building materials industry, it is mainly used in dry-mixed mortar, including ultra-thick self-leveling mortar, adhesive for large rock slab tiles, high-end exterior wall waterproof putty, and bonding mortar for insulation integrated boards. Its high viscosity and excellent water retention performance effectively improve the bonding strength between mortar and substrate, prevent hollowing, peeling, and cracking of building materials, enhance the water resistance and weather resistance of mortar and putty, and are suitable for large industrial decoration, high-rise building exterior walls, kitchens, bathrooms, and other humid environments.

In addition, it can be used as a film-forming agent for high-end water-based building coatings (such as exterior stone-like coatings and high-end interior latex paints), improving adhesion, scrub resistance, and durability, making the paint film smoother, denser, and less prone to peeling.

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