Polyvinyl Alcohol PVA 2699

Product Overview:

PVA 2699 is a white yellow granule or powder in appearance. It is a water-soluble and environmentally friendly polymer with a wide range of usage. Its performance is between plastic and rubbe with good properties:

1.Solubility: Strong hydrophilicity, easily soluble in water (usually dissolved in hot water above 90°C), insoluble in almost all organic solvents.

2. Film-forming: easy to form a film, and its film has excellent mechanical properties. Except for H2O, the PVA film has excellent barrier properties to H2, N2, O2 and other gases.

3. Adhesion: It has good adhesion with hydrophilic cellulose, paper, etc.

4. Thermal stability: When the PVA is heated to above 130°C, the appearance changes gradually. Complete alcoholysis of PVA begins to melt at around 230°C, and begins to decompose above 200°C.

5. Solvent resistance: PVA has strong resistance to weak acid and weak alkali, and has good oil resistance.

6. Reactivity: It has excellent cross-linking reactivity, can cross-link with boric acid, etc., and undergo acetal reaction with formaldehyde, acetaldehyde, etc., and the product has water resistance.

Specification

Application:

PVA 2699 is widely used in below industry:

1. Adhesive industry: paper and paper tube bonding.

2. Construction industry: acetalized products are used in construction glue, interior and exterior wall coatings, and adhesives.

3. Ceramic industry: aluminum ball binder, ceramic binder, etc.

4. Stabilizer industry: vinyl acetate emulsion polymerization and urea-formaldehyde adhesive viscosity stabilization and other fields.

Packing and Storage:

Polyvinyl alcohol is packed in paper-plastic composite bag, net weight 25kg/bag, 18MT/20GP without pallets. Other packing 500kg/bag or 800kg/bag is as per customer’s requirements. PVA should be stored in a dry and well-ventilated room, away from heat sources, and avoid sunlight exposure. After opening the inner bag, it should be used up as soon as possible to prevent moisture and caking. In fact, as long as PVA is not in contact with water, it can be stored for a long time.