Polyvinyl Alcohol (PVA) (TekLeu® PVA)

TekLeu® PVA is water-soluble polymer and can be dissolved in water at the desired ratio, It has excellent membrane formation, surface activation, emulsion, and dispersion properties

Molecule Structure

Features & Benefits

■ PVA boasts superior membrane formation ability with transparency, luster, electric insulation, printing easiness, strength, and so is used for various kind of films.

■ Water-soluble polymer and can be dissolved in water at the desired ratio;

■ has hydroxyl groups, so it exhibits a powerful adhesive force to hydrophilic surfaces;

■ PVA has hydrophilic hydroxyl groups and hydrophobic acetate groups, so it exhibits excellent surface activation, emulsion, and dispersion properties.

■ PVA is a stable polymer that will not change or deteriorate in general environments

Incompatibility

Polyvinyl alcohol has various reactions of secondary hydroxyl compounds, such as esterification reaction. It will drop in strong acids, soften or dissolve in weak acids and alkalis. High concentrations of PVA is incompatibility with inorganic salts, especially sulphate and phosphate. Phosphate can precipitate 5% (W/V) of polyvinyl alcohol. Borax can make PVA forms a gel.

Storage & Handling

This product has strong hygroscopicity. It should be stored in a sealed, cool and dry place.

Packing: 25kg drum

Regulatory

DMF,CEP,GMP

Safety

Safety Data Sheet has been compiled for Polyvinyl Alcohol (TekLeu® PVA) that contains up-to-date information on questions relevant to safety.

Application

■ As a film-forming material in coating agent/ spray agent/ film-coated agents;

■ As thickening agents, and suspending agents in eye drops;

■ As binder in tablets and granules;

■ As base material in gel dosage forms or emplastrum;

■ As emulsifiers/emulsification stabilizers in o/w emulsions due to  its  good suspending effect;

■ As a coating material for food additives;