Cobalt drier for water-based systems

  • Physical Characteristics

    Appearance Blue/purple liquid 
    Metal content Co: 9.90 – 10.10 % M001 
    Non-volatile content 65.00 – 80.00 % ASTM D 1644 
    Viscosity E to O ASTM D 2373 
    Specific gravity 0.990 – 1.040 g/cm3 (25°C) ASTM D 1963 
    Density NA 

  • Features

    • Shortens the surface drying of coatings, varnishes, stains and inks
    • Results in uniform through-drying of the paint film when used in combination with a secondary drier such as zirconium, barium or zinc
    • Catalyzes redox reactions which result in the dissociation of hydroperoxides from a change in valence from Co2+ to Co3+
    • Rapid surface drying
    • Calcium also promotes pigment wetting to improve film gloss

  • Applications

    • Oxidatively cured solvent-based systems, including:
      • Architectural paints
      • Industrial coatings
      • Stains
      • Oil-based inks
      • Artists’ colors

  • Dosage

    In conventional alkyd formulations, the cobalt addition is between 0.03 and 0.08 % metal based on the vehicle solids of the coating and will vary upon the composition of the binder. In printing inks, a combination of Cobalt and Manganese driers is recommended. The amount of cobalt is between 0.03 and 0.05 % based on binder solids. Cobalt driers can also be combined with Zirconium and Calcium driers for optimum surface and through dry. The specific drier blend should be experimentally determined.

  • Storage

    Protect from the effects of weathering and store at temperatures below 50 °C. Once opened, containers should be resealed immediately after each use.

  • Safety

    Please refer to our safety data sheet for information relating to product safety.