Cobalt Octoate

Cobalt 2-EthylHexanoate

  • Cobalt octoate is a primary/active drier
  • Cobalt drier is the most widely used drier in coating
  • It is primarily an oxidation catalyst that acts on top of the coated film (Surface Drier)
  • Cobalt octoate has a deep blue color, and if used at higher concentrations may affect the color of the paint
  • Cobalt octoate prevents water vapor present in atmosphere from penetrating the paint film
  • It is generally used in combination with other auxiliary and through driers
  • Cobalt drier is usually added at 0.05 to 0.4 % based on vehicle solids
  • It preferably should be added as near as possible to the end of the manufacturing process
  • To prevent a very quick initial drying which would result in surface wrinkling, the dosage of cobalt drier should be chosen precisely
  • It accelerates the catalytic effect of Methyl ethyl ketone (M.E.K.) Peroxide in polymerizing unsaturated polyester (UPR) resins.



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