Products

KURARAY POVAL™ 32-80 by Kuraray is a biodegradable and recyclable polyvinyl alcohol (PVOH) having varying degree of polymerization and hydrolysis. It is a water-soluble polymer manufactured by alcoholysis of polyvinyl acetate. It has good bonding strength and pigment binding capacity because PVAs have good cohesion and good adhesion to fibers, fillers as well as pigments. It possesses excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power. It is used in a similar manner as natural products such as casein as well as starch and its degraded derivatives (for example dextrin) as raw material to produce aqueous adhesive solution. For the modification of aqueous adhesives its aqueous solution can be added to polymer emulsions already stabilized with polyvinyl alcohol which affects the extension of the open time, increase of the setting speed and influence on the rheology. KURARAY POVAL™ 32-80 is used in producing silicon-based paper that are further used as release paper for PSA labels and also in remoistenable adhesives which are employed mainly in the paper processing industry and films applications.

KURARAY POVAL™ 28-99 by Kuraray is polyvinyl alcohol. It is a fully saponified, odorless, water-soluble polymer manufactured by alcoholysis of polyvinyl acetate. It shows varying degree of polymerization and hydrolysis. Its aqueous solution can be added to polymer emulsions already stabilized with polyvinyl alcohol which affects the extension of the open time, setting speed and rheology. It exhibits good penetration capacity and good adhesion properties. It offers high cohesion, toughness, low electrostatic charging and re-dissolving capacity of the dried film in water. KURARAY POVAL™ 28-99 is designed for pressure sensitive adhesive labels. Complies with EU Directive 67/548/EC.

KURARAY POVAL™ 3-85 S4 by Kuraray is a water-soluble, polyvinyl alcohol (PVOH) grade manufactured by alcoholysis of polyvinyl acetate. It exhibits high molecular weight and good cohesion. It possesses good adhesion to fibers-, fillers- and pigments. It provides extension of the open time, increase of the setting speed and influence on the rheology. KURARAY POVAL™ 3-85 S4 is recommended for the modification of emulsion adhesives.