Cobalt-Free Drier / Sustainable Solution for Improved Dry Time in Alkyd Paint

Borchi® OXY-Coat is a metal-based high-performance cobalt-free drier catalyst for improved drying time in paints containing alkyd resins. It demonstrates excellent drying performance at low use levels in solvent-based short, medium, and long oil alkyd paint. This solution does not require the use of an auxiliary drier. Cobalt-free driers are more sustainable drying solutions as they do not contain metals like cobalt that may face regulatory concerns in coating applications. Borchi® OXY-Coat is particularly efficient in coatings using propylene glycol.



Comparison of Borchi® OXY-Coat in Medium Oil Alkyd Paint

cobalt-free drier in medium oil alkyd


Borchi® OXY-Coat provides improved drying time compared to a cobalt drier in medium oil alkyd paint. This oxidative curing catalyst also works well in short and long oil alkyd systems


How does alkyd paint dry?

Coatings typically need a metal catalyst to achieve the best dry times. As a high-performance metal-based catalyst, Borchi® OXY-Coat is applicable in a wide range of alkyd coating systems that dry oxidatively.



Benefits of High-Performance Cobalt-Free Driers

Cobalt-free paint driers are ideal long-term solutions for formulators looking to meet potential regulations surrounding cobalt in coating applications. For example, in June 2022, the U.S. EPA prioritized Cobalt and Cobalt Compounds for risk assessment and possible regulatory reclassification. 

Performance benefits of Borchi® OXY-Coat include improved drying time, gloss, and haze in alkyd-based paint. This solution also provides brighter whites and reduces yellowing in coatings. Adhesion is improved in direct-to-metal applications with the use of this product. Borchi® OXY-Coat also eliminates or reduces the need for anti-skinning agents.

Borchi® OXY-Coat works well for exterior coatings used in adverse weather conditions. This extends the coatings season window for paint applications. It provides wrinkle-free drying in hot weather and faster drying in cold weather.


Non-Yellowing of Alkyds Over Time

non yellowing of alkyds with cobalt free drier

       Cobalt Drier                           Borchi® OXY-Coat


Color advantages include brighter whites in coatings compared to cobalt and other metal carboxylates


cobalt free catalyst provides warmer wood tones in alkyd paints and coatings

          Manganese Drier                           Borchi® OXY-Coat   

    Yellower Wood Tones                    Warmer Wood Tones


Borchi® OXY-Coat provides warmer wood tones compared to traditional manganese driers


Borchi® OXY-Coat Advantage Under Adverse
(10ºC / 80% RH) Conditions in Different Systems

faster dry times in adverse conditions with high performance catalysts

Compared to cobalt carboxylate driers, cobalt-free paint driers allow for the use of exterior coatings in adverse conditions. They provide improved dry times in low temperature, high humidity weather


Wrinkling Prevention on Substrates

wrinkling prevention from over-application due to cobalt-free water-based alkyd drier

       Cobalt Drier                       Borchi® OXY-Coat


Unlike cobalt alternatives, Borchi® OXY-Coat prevents wrinkling, creating a smooth appearance


Through Dry Time of SB Pigmented Direct to Metal Applications

improved dry times in solvent borne direct to metal alkyds with sustainable drier


Cobalt replacement driers are better than cobalt driers in direct to metal applications when used in standard and adverse conditions


eliminate potential use of anti-skinning agents

        Control                                             Borchi® OXY-Coat


 Borchi® OXY-Coat reduces or eliminates the need for anti-skinning agents in coatings


Similar Cobalt-Free Driers

While Borchi® OXY-Coat can work in water- and solvent-based systems, it tends to work best in solvent-based alkyd systems. Borchi® OXY-Coat 1101 is ideal for water-based alkyd coatings. Borchi® Dragon is designed for use in high solids alkyds. Please contact our technical service team for more information.



Ideal applications for Borchi® OXY-Coat include wood, industrial, and architectural coatings, as well as printing inks.




Click here for sales tool.

Click here for sales tool on using Borchi® OXY-Coat in adverse conditions.


Starting Point Formulations

High Gloss, High Solid Decorative Formulation with Arkema Synolac 4060 WP 90

Cobalt- and Oxime-free High Solid Decorative Formulation with Arkema Synolac 6883

High Gloss, High Solid Decorative Formulation with Arkema Synolac 4060 WDA 90

Interior & Exterior High Gloss Paint Formulation with Urakyd AD 130

Cobalt- and Oxime-free Interior and Exterior High Gloss Decorative Formulation with Vilkyd 212LA70

  • Physical Characteristics

    Appearance Clear brown to yellow liquid 
    Viscosity Max. 200 mPa·s (informative) ISO 3219 (A) (20 °C) 
    Density Approx. 1.04 g/cm3 (informativeDIN 51757 (20 °C) 
    Solvent 1,2-propylene glycol (informative) 

  • Features

    • Improves drying activity, color performance, gloss and haze compared to cobalt-based driers in alkyd paints
    • Brighter whites and non-yellowing in coatings
    • Based on a unique, patented, highly active iron complex
    • Primarily recommended for use in solvent-based systems
    • Can be used in all coatings which dry by oxidation

  • Applications

    • Coatings with resins that that dry by oxidation 
      • Alkyds 
      • Vegetable oils
      • Epoxy esters
      • Polybutadiene 
      • Others 

  • Dosage

    All resin systems are unique and will require the level of Borchi® OXY - Coat to be optimized for the best cost and dry. We recommend using a ladder study of 0.5 -3 % Borchi® OXY - Coat as supplied on resin solids. Please keep in mind that too much Borchi® OXY – Coat might inhibit through dry. Borchi® OXY - Coat should be added as one of the last ingredients before the Anti-Skinning agent. 

  • Storage

    Protect from the effects of weathering and store at temperatures between 5 and 30 °C. Once opened, containers should be resealed immediately after each removal of the product.

  • Safety

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

Registration :

For chemical inventory status, please review section 15 of the current SDS.

Click here to access the SDS portal.

For additional regulatory information, please contact [email protected].

High-Performance Catalysts Products