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Highly selective cobalt-based catalyst for controlled oxidation reactions.
Thermally stable up to 120 °C, enabling robust performance in continuous processes.
Low metal leaching ensures long-term activity and minimal downstream contamination.
Soluble in common organic solvents including toluene, xylene, and aliphatic hydrocarbons.
Designed for easy integration into existing catalytic systems without major process modifications.
Oxidation of cyclohexane to cyclohexanol and cyclohexanone in nylon precursor synthesis.
Catalytic air oxidation of alkylaromatics in fine chemical intermediates production.
Selective oxidation of secondary alcohols to ketones in pharmaceutical active ingredient manufacturing.
Co-catalyst in autoxidation processes for polymer stabilizer precursors.
| Chemical Type | Cobalt(II) naphthenate complex |
| Product Form | Liquid solution |
| Appearance | Clear, dark red-brown liquid |
| Cobalt Content (w/w) | 6.0–6.5 % |
| Solvent Base | Aromatic hydrocarbon mixture |
| Density (20 °C) | 0.92–0.95 g/cm³ |
| Flash Point (PMCC) | 62 °C |
| Storage Stability | ≥24 months at 5–30 °C under inert atmosphere |
Q1: What is the primary function of Borchi Kat 28 in coating and ink formulations?
A: Borchi Kat 28 is a cobalt-free, heavy-metal-free drier catalyst designed to accelerate the oxidative crosslinking of alkyd resins and other air-drying binders. It promotes efficient surface and through-dry without compromising film clarity or long-term stability.
Q2: Is Borchi Kat 28 suitable for use in low-VOC or high-solids systems?
A: Yes — Borchi Kat 28 is formulated to perform effectively in modern low-VOC, high-solids, and solvent-reduced coatings. Its high catalytic activity allows for reduced overall additive loadings, supporting formulation strategies aligned with sustainability and regulatory trends.
Q3: How should Borchi Kat 28 be incorporated into a formulation?
A: It is typically added during the let-down stage under moderate agitation. For optimal dispersion and performance, it is recommended to pre-dilute in a compatible solvent or binder portion before incorporation. Avoid exposure to strong acids or highly polar additives that may affect catalytic integrity.
Q4: Does Borchi Kat 28 offer improved storage stability compared to traditional cobalt driers?
A: Yes — as a non-cobalt, non-heavy-metal catalyst, Borchi Kat 28 contributes to enhanced shelf-life stability in liquid formulations. It reduces the risk of premature gelation or viscosity drift commonly associated with reactive metal driers, especially in warm or extended storage conditions.
Q5: Can Borchi Kat 28 be used in combination with other driers or accelerators?
A: Yes — it is compatible with common auxiliary driers such as zirconium, calcium, or manganese-based catalysts. Synergistic combinations can be tailored to balance surface dry, through-dry, and film hardness development, though compatibility testing under end-use conditions is recommended.
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