Overview
KURARAY POVAL™ is the brand name of Kuraray’s globally produced polyvinyl alcohol (PVOH). KURARAY POVAL™ is used in a broad range of applications. The main uses are in the paper, adhesive, textile and construction industries, as well as in ceramics, packaging and electronics. The physical and chemical properties make PVOH very versatile. It features water-solubility, excellent film forming characteristics, high tensile strength and elasticity, as well as resistance against organic solvents and dispersing power.
ELVANOL™ PVOH resin can be dissolved in the continuous cooking process designed for starch in which standard polyvinyl alcohols remain undissolved. This will be a significant benefit in paper coating applications, especially where polyvinyl alcohols are used together with starch to enhance performance.
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Examples
- Abrasives
- Adhesive
- Building materials
- Ceramics
- Cosmetics
- Protective colloid in emulsion polymerization
- Food packaging
- Paper
- PVC production and compounding
- Textiles
- Thermoplastic processing
- Oil field cementing
- Glass fiber
- Solubility
KURARAY POVAL™ and ELVANOL™ dissolve in water. The higher the water temperature, the quicker the rate of dissolution. These products have extremely high oil resistance, and are insoluble in most organic solvents. However, they dissolve in certain organic solvents such as glycols, DMSO and phenol. - Acid and alkaline resistant
These materials are mostly unaffected under weak acid or alkaline conditions. - Thermal stability
The melting point and temperature at which KURARAY POVAL™ and ELVANOL™ start thermal decomposition are close together, with gradual decomposition at 180ºC or higher.
- Film-forming
Easily converted to threads or films, and the physical properties, including tensile strength, tear strength and abrasion strength, are excellent compared with other synthetic resins. - Hygroscopicity
Lower hygroscopicity than other water-soluble polymers, and any changes caused by varying humidity are relatively minor.
Poval Resin Sales Management Department
Poval Resin Division
Kuraray Co., Ltd.
Tokiwabashi Tower, 2-6-4, Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan
TEL: +81-3-6701-1451
FAX: +81-3-6701-1460