Amivion ALA-80 is a modified aliphatic amine epoxy curing agent formulated for ambient-temperature cure of bisphenol A and bisphenol F epoxy resin systems. Based on aliphatic polyamine chemistry, Amivion ALA-80 delivers reactive amine functionality combined with the processing improvements characteristic of adduct and modified amine formulations: reduced blush susceptibility, lower vapor pressure, improved compatibility with epoxy resins, and a more controlled exotherm compared to neat aliphatic amines. Amivion ALA-80 is suited to industrial protective coatings, civil engineering applications, adhesives, and flooring systems where fast ambient cure, robust chemical resistance, and cost-effective performance are required.
Key Features
- Ambient Temperature Cure: Amivion ALA-80 provides effective curing of standard epoxy resin systems at room temperature without external heat application. This ambient cure capability supports use in on-site construction, maintenance painting, and industrial flooring applications where post-cure baking is not practical or economically viable.
- Reduced Blush and Improved Surface Quality: The modified amine chemistry of Amivion ALA-80 reduces the tendency for amine blush—surface contamination caused by migration of amine and reaction with atmospheric CO₂—which is a common issue with unmodified aliphatic amines. This results in improved inter-coat adhesion and surface appearance in multi-coat systems applied under humid conditions.
- Good Chemical Resistance: Epoxy networks cured with Amivion ALA-80 demonstrate resistance to water, salt solutions, dilute acids, dilute alkalis, and aliphatic hydrocarbon solvents. This chemical resistance profile supports application in industrial floor coatings, secondary containment linings, and protective coatings for structures in chemically aggressive environments.
- Controlled Exotherm and Processing Safety: The adduct modification in Amivion ALA-80 moderates the exothermic heat of reaction compared to unmodified aliphatic diamines, reducing the risk of overheating in thick-film applications and large mixed volumes. This improves processing safety and allows use in thicker coating films and larger encapsulation pours without significant risk of thermal degradation.
- Mechanical Strength and Hardness: Cured epoxy systems formulated with Amivion ALA-80 develop good compressive and tensile strength, hardness, and adhesion to steel and concrete substrates. These mechanical properties support use in structural adhesives, repair mortars, and industrial floor systems that require load-bearing performance in service.
Typical Applications
Amivion ALA-80 is used as the hardener component in two-part epoxy systems for industrial coatings, civil engineering applications, and adhesives. Key uses include anticorrosion primers and intermediate coats for steel and concrete structures; industrial epoxy floor coatings for manufacturing facilities, warehouses, and chemical plants; solvent-free and high-solids epoxy coatings for tank linings and secondary containment; and structural epoxy adhesives for bonding metal, concrete, and composite substrates. Its ambient cure profile and good compatibility with standard liquid epoxy resins make Amivion ALA-80 a practical choice across a broad range of protective and structural applications.
Additional applications include potting and encapsulation compounds for electrical and electronic components requiring good dielectric properties and chemical resistance; civil engineering repair mortars and injection grouts for crack repair and substrate consolidation; adhesive anchors and fastening systems for construction hardware; and epoxy coating systems for concrete protection in water treatment facilities and food processing environments. Amivion ALA-80 is evaluated in both solvent-borne and solvent-free epoxy formulations across these application areas.
Technical Specifications
- Chemical Type: Modified aliphatic polyamine (diethylenetriamine-based adduct)
- CAS No.: Adduct mixture — no single CAS number applies; primary reactive component is diethylenetriamine (DETA), CAS 111-40-0
- Appearance: Colorless to light yellow, transparent viscous liquid
- Active Amine Content: ~80% (nominal), consistent with modified aliphatic amine adduct curing agents of this class
- Amine Value: approximately 450-550 mgKOH/g, typical for 80%-active DETA-based amine adducts (full-strength adducts of this chemistry, such as industry-standard “593”-type curing agents, report total amine values of 500-700 mgKOH/g)
- Active Hydrogen Equivalent Weight (AHEW): approximately 100-125 g/eq, calculated from the typical amine value range for this adduct class
- Viscosity at 25°C: typically 150-400 mPa·s, somewhat higher than neat low-viscosity DETA-BGE adducts such as industry-standard “593”-type curing agents (approximately 90-150 mPa·s), reflecting Amivion ALA-80’s modified composition
- Color (Gardner or APHA): ≤3 Gardner (colorless to pale yellow)
- Water Content: ≤1.0% by mass, typical for adduct-type modified amine curing agents
Thermal Stability
- Amivion ALA-80 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; maintain adequate ventilation during handling.
Storage Recommendations
- Recommended maximum storage temperature: below 40°C (104°F)
- 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 with atmospheric components.
- Avoid contact with strong acids, strong oxidizing agents, aldehydes, and reactive epoxy resins outside of intended formulation use.
Packaging & Transport
- Standard Packaging: 200 kg (44 gal) net steel drums; 20 kg pails and 1,000 kg IBC totes available upon request
- UN Number: Likely UN 2735 (Amines, liquid, corrosive, n.o.s.) — final classification depends on destination-specific SDS/TDS corrosivity data
- Transport Class: Class 8 (Corrosive), Packing Group II or III pending confirmed corrosivity classification
Amivion ALA-80: Safety & Handling
Amivion ALA-80 should be handled in accordance with applicable safety procedures for aliphatic amine epoxy curing agents. The product may cause skin sensitization, skin and eye irritation, and respiratory irritation. Personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing should be worn during handling and mixing. Adequate ventilation should be maintained to control amine vapor concentrations in enclosed workspaces. Users should review the Safety Data Sheet prior to use and implement the engineering controls and personal protective measures specified therein.
Safety Data Sheet and destination-compliant labeling information are available upon request. For related products, see also Amivion DETA and Amivion TEPA.
Amivion ALA-80 vs. Standard DETA-BGE Adduct Curing Agents
Amivion ALA-80 belongs to the same broad family of diethylenetriamine (DETA) and butyl glycidyl ether (BGE) modified aliphatic amine adducts as widely used industry-standard grades sold in the Chinese market under designations such as “593” and “DE-80” curing agents. These low-viscosity, transparent adducts are prized for their light color, fast ambient cure, and compatibility with solvent-free epoxy systems used in FRP lamination, potting and encapsulation, and general-purpose construction adhesives. Amivion ALA-80 is formulated to deliver comparable ease of processing while targeting the reactivity and film performance needed for coatings, flooring, and civil engineering repair work.
As with other AHEW-based curing agents in the Amivion range — see also Amivion CAA-35/39 for a comparable modified aliphatic amine adduct hardener — the practical mix ratio against a given epoxy resin can be estimated stoichiometrically using phr ≈ 100 × AHEW(hardener) / EEW(resin). Against a standard bisphenol-A liquid epoxy resin with an EEW of approximately 190, an AHEW of 100-125 g/eq for Amivion ALA-80 corresponds to an approximate mix ratio of 53-66 phr; actual formulations should always be confirmed against the resin’s certified EEW and the curing agent’s final QC-tested amine value.