At the recent European Coatings Show BYK debuted Rheobyk-440, which has been developed for water-based epoxies and is suitable for a variety of systems. That is because, in the area of sea freight containers especially, the manufacturers of protective coatings have dealt extensively in the last two years with aqueous systems based on the latest epoxy resin dispersions. These coatings are formulated with a high pigment content and are applied in higher film thicknesses, so that a rheology control agent is needed to adjust coating properties like anti-sagging and anti-settling. However, since established rheology additives in the market are not efficient enough, are not stable, or even do not work at all in epoxy dispersions, a new technology is required.
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