Low Saponification PVOH LW Series

The product is an aqueous solution type PVOH with low saponification that has hydrophilic and alcoholphilic properties.
Low saponification PVOHs (35 to 60 mol% saponification) have been used in various applications including hot melt resins, dispersing auxiliaries for suspension polymerization of vinyl chloride, adhesives, coating agents, binders, and pressure sensitive adhesives. However, because the low saponification PVOHs above are usually water insoluble, handling of the resin and application development have been constrained. In contrast, GOHSENX™ LW can be handled in the form of an aqueous solution while maintaining the hydrophobicity characteristic of low saponification PVOHs.

・Can be handled in the form of an aqueous solution under high concentration conditions (precipitates in a low concentration aqueous solution)
・Maintains the lipophilicity (alcoholphilicity) of low saponification PVOH

Viscosity measured in 39–41% aqueous solution at 25°C

Solubility / Liquid Absorption Properties

GOHSENX™ LW products have both a hydrophilic and hydrophobic portion in their molecular structure. They dissolve in or absorb water, as well as various polar organic solvents such as methanol, ethanol, acetone, ethylene glycol, DMSO, and trichloroethylene.

◎: Completely dissolved, ○: Almost dissolved, ×: Almost no liquid absorption

(1) Measuring conditions: Measured with DSC (temp. increase/decrease rate: 10°C/min)

(1) Measuring conditions: COD (Mw) JIS K0102-17 (1998), BOD5 JIS K0102-21/32.3 (1998)
(2)Measurement: Registration No. of measurement certification business: Osaka No. 10013, KK Osaka Environmental Technology Center