Wetting and dispersing additive

  BYK USA Inc. (Wallingford, Conn.) has developed DISPERBYK-2009, a high-molecular-weight wetting and dispersing additive formulated to stabilize silica-based matting agents in high-solids and solvent-free coatings. The company notes that high- and full-solids systems (e.g., UV-curing systems) are difficult to mat

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 BYK USA Inc. (Wallingford, Conn.) has developed DISPERBYK-2009, a high-molecular-weight wetting and dispersing additive formulated to stabilize silica-based matting agents in high-solids and solvent-free coatings. The company notes that high- and full-solids systems (e.g., UV-curing systems) are difficult to mat due to their high solids content and resulting low shrinkage, so they represent a challenge for coating development. Compatible with a variety of binder systems, the additive reportedly improves the matting effect, helps reduce viscosity and can be used with all types of matting agents due to its polar and neutral pigment affinic groups. Beside the good results with matting agents, this additive also is suitable for dispersing and stabilizing pigments and extenders.