Cobalt Octoate
Metal Carboxylate Paint Drier & Oxidation Catalyst
The most reactive and commonly used paint drier in the coatings industry. Cobalt octoate acts as an oxidation catalyst that accelerates polymerization of alkyd resins, promotes rapid surface film formation, and enhances overall paint performance.
Product Information
Download detailed technical specifications, application guidelines, and performance data for Cobalt Octoate.
Key Benefits
- • Most reactive paint drier available
- • Accelerates oxygen uptake
- • Rapid surface film formation
- • Improves film gloss
- • Increases water resistance
- • Compatible with all coating media
Product Overview
Cobalt Octoate is a metal carboxylate catalyst that accelerates chemical reactions without being consumed in the process. In paint formulations, it speeds up the formation of polymers from resins, making it an essential component in gloss paints and surface coatings.
As the most reactive and commonly used paint drier, Cobalt Octoate catalyzes oxygen uptake and accelerates peroxide formation, causing rapid surface film formation. This makes it particularly effective as an oxidation catalyst for alkyd resin polymerization and linseed oil drying processes.
The catalyst promotes polymerization of coating media, hardens paint films, improves film gloss, eliminates frosting tendency, and significantly increases water resistance. Its unique properties allow it to perform individually while providing reasonable properties to paint films, and it prevents atmospheric humidity from penetrating the paint film.
Primary Applications
- • Gloss paints and coatings
- • Alkyd resin systems
- • Linseed oil formulations
- • Surface coating media
- • Unsaturated polyester resins
- • Industrial coatings
- • Automotive paints
- • Marine coatings
Technical Specifications
Product Characteristics
| Property | Value |
|---|---|
| Chemical Name | Cobalt(II) 2-ethylhexanoate |
| Appearance | Dark red-violet liquid |
| Cobalt Content | 6.0% ± 0.5% |
| Specific Gravity | 0.95 - 1.05 |
| Viscosity (25°C) | 50-200 cP |
| Flash Point | ≥ 61°C |
Performance Data
| Parameter | Performance |
|---|---|
| Dosage Range | 0.05 - 0.4% by solid content |
| Drying Time Reduction | 50-70% |
| Film Hardness | Significantly improved |
| Gloss Enhancement | Excellent |
| Water Resistance | Enhanced |
| Compatibility | All coating media |
Mechanism of Action
Cobalt Octoate functions as an oxidation catalyst by promoting the autoxidation of unsaturated fatty acids and alkyd resins. The cobalt ions facilitate the decomposition of hydroperoxides, which are intermediate products in the oxidative polymerization process.
Catalytic Process:
- Oxygen Activation: Cobalt ions accelerate oxygen uptake from air
- Peroxide Formation: Promotes formation of peroxide intermediates
- Radical Generation: Catalyzes decomposition to form free radicals
- Cross-linking: Enables polymer chain cross-linking
- Film Formation: Results in hard, durable surface film
This process prevents atmospheric humidity penetration and creates a protective barrier with enhanced gloss and durability properties.
Applications & Benefits
Gloss Paints
Primary catalyst for alkyd resin polymerization in high-gloss paint formulations, providing excellent surface finish and durability.
Rapid Drying
Accelerates drying time by 50-70%, enabling faster production cycles and reduced waiting periods between coats.
Film Hardness
Promotes cross-linking that significantly improves film hardness and scratch resistance in paint applications.
Water Resistance
Enhances water resistance by preventing atmospheric humidity penetration through the paint film barrier.
Enhanced Gloss
Improves film gloss and eliminates frosting tendency, providing superior aesthetic properties in coating applications.
Universal Compatibility
Compatible with all surface coating media, making it versatile for various paint and coating formulations.
Usage Guidelines
Dosage & Application
Recommended Dosage: 0.05-0.4% based on solid content ratio
- Add during paint formulation stage for optimal dispersion
- Ensure thorough mixing to achieve uniform distribution
- Can be used individually or in combination with other driers
- Monitor ambient conditions affecting drying rate
- Adjust dosage based on specific coating requirements
- Compatible with methyl ethyl ketone (MEK) peroxide systems
Storage & Handling
Storage: Store in cool, dry place away from heat sources and direct sunlight
- Store in original sealed containers
- Protect from moisture and contamination
- Shelf life: 24 months under proper storage conditions
- Avoid storage near strong oxidizing agents
- Use appropriate PPE including gloves and eye protection
- Ensure adequate ventilation during handling
Safety Information
Handling Precautions
- • Avoid skin and eye contact
- • Use in well-ventilated areas
- • Wear appropriate protective equipment
- • Avoid inhalation of vapors
- • Keep away from heat sources and flames
- • Do not eat, drink, or smoke during handling
- • Wash hands thoroughly after use
Environmental Considerations
- • Follow local environmental regulations
- • Dispose of waste according to regulations
- • Prevent release to waterways
- • Use spill containment measures
- • Consider recycling empty containers
- • Monitor workplace exposure levels
- • Implement proper waste management
Need Technical Support?
Our technical team can help you optimize cobalt octoate usage for your specific paint and coating formulations.