Exceval™ is the trade mark of Kuraray’s hydrophobically modified polyvinyl alcohol especially designed for the requirements of “high water resistance”. When used as a dispersing aid / protective colloid for the manufacture of polyvinyl acetate emulsion for wood adhesives, high water resistance like DIN D3 level can be achieved. This level of performance is accomplished without the addition of any cross-linking agents thanks to the excellent water resistance of Exceval™ itself. Exceval™ contributes to the production of “formaldehyde free”, environmentally friendly wood adhesives.
- - Improved water-resistance
- - Strong gas barrier at high humidity
- - Gas barrier versus oxygen, nitrogen, carbon dioxide and organic substances