Dispersion and Matting Agents Using Hyperdispersants in UV Wood Coatings

清泥

Abstract
The ability to create a matt effect in traditional water and solvent based coatings using available matting
agents is well understood. In contrast, when the coating is UV (100% solid), more matting agent is
required to compensate for the lack of film shrinkage (solvent evaporation). This can lead to problems
such as:
• Adverse rheological effects e.g. increasing viscosity with time.
• Inconsistent gloss levels.
With the aid of a Hyperdispersant to stabilise the matting agents, these negative effects, generated by
insufficient wetting can be overcome to give a coating with consistent: gloss, surface finish, cure and
resistance properties.