Amivion CAA-35/39 is a modified aliphatic amine adduct epoxy curing agent offered in two formulation grades—CAA-35 and CAA-39—optimized for ambient-temperature curing of bisphenol A and bisphenol F epoxy resin systems. Built on modified fatty polyamine chemistry, both grades provide reactive amine functionality with improved processing characteristics compared to unmodified aliphatic amines: reduced volatility, lower skin-sensitization potential from vapor exposure, improved compatibility with liquid epoxy resins, and better resistance to amine blush under humid conditions. The two grades differ in their active hydrogen equivalent weight and associated mixing stoichiometry, enabling formulators to select the grade that best matches their epoxy resin, application viscosity requirements, and desired open time. Amivion CAA-35/39 is suited to protective coatings, industrial floor systems, civil engineering grouts, and general-purpose adhesive applications.
Key Features
- Two Complementary Grades for Formulation Flexibility: Amivion CAA-35 and Amivion CAA-39 provide different active hydrogen equivalent weights within the same product family, giving formulators the ability to optimize stoichiometry, pot life, and cure speed for specific epoxy resin systems and application conditions. Both grades share the same chemical base, enabling easy qualification of either grade within a coating or adhesive system.
- Ambient Temperature Cure: Both grades of Amivion CAA-35/39 provide effective curing of standard liquid epoxy resins at room temperature. This ambient cure capability is critical for site-applied coatings, civil engineering repair applications, and industrial floor systems where controlled heat cure is not feasible or economically practical.
- Reduced Amine Blush Tendency: The adduct modification in Amivion CAA-35/39 reduces the tendency for amine blush under humid curing conditions compared to neat aliphatic amine hardeners. Reduced blush improves inter-coat adhesion in multi-coat systems, surface gloss development, and the appearance of cured films applied during periods of elevated relative humidity.
- Chemical and Corrosion Resistance: Epoxy coatings cured with Amivion CAA-35/39 deliver good resistance to water, salt solutions, dilute acids, dilute alkalis, and aliphatic hydrocarbon contact. This resistance profile supports use in anticorrosion primers, protective topcoats, and floor coatings applied to steel and concrete substrates in industrially aggressive environments.
- Broad Compatibility with Epoxy Systems: The modified amine adduct chemistry of Amivion CAA-35/39 is compatible with a wide range of standard and modified bisphenol A and bisphenol F epoxy resins, including those formulated with reactive diluents. This compatibility simplifies transition between epoxy resin suppliers and supports use across diverse two-component protective coating formulations.
Typical Applications
Amivion CAA-35/39 is used as the hardener component in two-part epoxy coatings and adhesives for industrial and infrastructure applications. Both grades are suitable for anticorrosion primer and topcoat systems for structural steel, bridges, storage tanks, and pipelines; industrial epoxy floor coatings for manufacturing, logistics, and food production facilities; solvent-free epoxy coatings for concrete and steel surfaces in water treatment, marine, and chemical processing environments; and general-purpose structural epoxy adhesives for bonding metal, concrete, and composite substrates.
Additional applications include civil engineering injection grouts and repair mortars for concrete crack repair and structural rehabilitation; epoxy coating systems for secondary containment and tank linings; electrical potting and encapsulation compounds requiring ambient cure and chemical resistance; and surface-tolerant maintenance coatings for infrastructure where surface preparation is limited. The availability of two grades within Amivion CAA-35/39 allows the same product family to address formulations requiring different pot life, build thickness, and film properties.
Technical Specifications
- Chemical Type: Modified aliphatic polyamine adduct; two grades (CAA-35 and CAA-39)
- CAS No.: To be confirmed based on the final specification sheet.
- Appearance: To be confirmed based on the final specification sheet.
- Active Hydrogen Equivalent Weight (AHEW) — CAA-35: To be confirmed based on the final specification sheet.
- Active Hydrogen Equivalent Weight (AHEW) — CAA-39: To be confirmed based on the final specification sheet.
- Amine Value: To be confirmed based on the final specification sheet.
- Viscosity at 25°C: To be confirmed based on the final specification sheet.
- Color (Gardner or APHA): To be confirmed based on the final specification sheet.
- Water Content: To be confirmed based on the final specification sheet.
Thermal Stability
- Amivion CAA-35/39 is thermally stable under normal storage and handling conditions.
- Avoid exposure to strong oxidizing agents, strong mineral acids, and temperatures significantly above recommended storage limits. Decomposition upon heating may release amine vapors; handle in well-ventilated areas.
Storage Recommendations
- Recommended maximum storage temperature: To be confirmed based on the final specification sheet.
- Store in a cool, dry, well-ventilated area away from heat sources, direct sunlight, and moisture.
- Keep containers tightly sealed to prevent CO₂ absorption, moisture uptake, and premature reaction.
- Avoid contact with strong acids, strong oxidizing agents, and reactive epoxy resins outside of intended use.
Packaging & Transport
- Standard Packaging: To be confirmed based on the final specification sheet.
- UN Number: To be confirmed based on the final specification sheet.
- Transport Class: To be confirmed based on the final specification sheet.
Amivion CAA-35/39: Safety & Handling
Amivion CAA-35/39 should be handled in accordance with applicable safety procedures for modified aliphatic amine epoxy curing agents. Both grades may cause skin sensitization, skin and eye irritation, and respiratory irritation upon contact or vapor exposure. Personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing should be worn during handling and mixing. Adequate ventilation or local exhaust extraction should be maintained to control amine vapor levels in the work area. Users should review the Safety Data Sheet for the specific grade prior to use and implement the engineering controls and personal protective measures specified therein.
Safety Data Sheets and destination-compliant labeling information for both grades are available upon request. For related products, see also Amivion ALA-80 and Amivion DETA.