Amivion PEA-40 is a trifunctional polypropylene oxide-based polyetheramine supplied as a low-viscosity liquid for use as an epoxy resin curing agent and as a reactive amine component in polyurethane systems. Unlike difunctional polyetheramine grades, Amivion PEA-40 carries three primary amine groups distributed across a branched polypropylene oxide backbone derived from a trimethylolpropane-initiated polyether triol structure. This trifunctionality produces a higher crosslink density in cured epoxy networks compared with difunctional polyetheramine curatives of similar molecular weight, while the polyether backbone retains the characteristic flexibility and water miscibility of the polyetheramine product class. Amivion PEA-40 is used in epoxy floor coatings, structural casting compounds, composite matrix resins, and polyurethane formulations where an anti-sag reactive amine component is required.
Amivion PEA-40 Overview
Amivion PEA-40 belongs to the trifunctional branch of the polyoxypropylenediamine product family, with a molecular architecture based on a propylene oxide chain initiated from a trifunctional core, resulting in three polyether arms each terminating in a primary amine group on a secondary carbon atom. The three primary amine groups per molecule give Amivion PEA-40 six active amine hydrogens available for reaction with epoxide groups, enabling a tighter crosslinked network structure relative to difunctional analogs at equivalent molecular weight. This increased crosslink density translates into improved chemical resistance, higher hardness, and greater dimensional stability in the cured thermoset compared with longer-chain difunctional polyetheramine-cured systems, while the polypropylene oxide segments preserve toughness and impact resistance. Amivion PEA-40 is a clear to pale yellow liquid at ambient temperature, fully miscible with water and compatible with polar organic solvents, reactive diluents, and standard liquid epoxy resins including bisphenol A, bisphenol F, and aliphatic types.
Key Features
- Trifunctionality for Higher Crosslink Density: Amivion PEA-40 provides three primary amine groups per molecule, each capable of reacting with up to two epoxide equivalents, yielding a total of six reactive amine hydrogens. This trifunctionality produces a more tightly crosslinked epoxy network compared with difunctional polyetheramine curatives at equivalent molecular weight, resulting in improved solvent and chemical resistance, higher surface hardness, and reduced tendency for swelling in aggressive chemical environments. The branched crosslinked architecture of Amivion PEA-40 cured systems is advantageous in industrial floor coatings, chemical containment linings, and composite matrix applications where a balance of toughness and chemical resistance is required.
- Polyether Backbone for Toughness and Impact Resistance: Despite the higher crosslink density conferred by trifunctionality, Amivion PEA-40 retains the polypropylene oxide soft segment character of the polyetheramine product class. The flexible polyether chain segments between crosslink junctions absorb energy under impact loading and accommodate substrate deformation, reducing crack initiation and propagation in the cured film or casting. This combination of moderate flexibility and adequate crosslink density makes Amivion PEA-40 suitable for applications requiring both chemical resistance and resistance to mechanical damage, such as heavy-duty floor coatings subject to wheeled traffic and impact.
- Anti-Sag Performance in Polyurethane Systems: In polyurethane formulations, Amivion PEA-40 functions as a reactive amine component that contributes anti-sag and thixotropic characteristics to the mixed system. The primary amine groups react rapidly with isocyanate groups to form urea linkages, building molecular weight quickly after mixing and reducing the tendency of applied coatings or adhesive beads to flow on vertical surfaces before cure is complete. This anti-sag behavior is valuable in two-component polyurethane coating and sealant applications where vertical or overhead application is required and sag resistance must be maintained during the open time window.
- Low Viscosity for Processing Convenience: Amivion PEA-40 is a low-viscosity liquid at ambient temperature, which facilitates accurate metering, homogeneous mixing with liquid epoxy or isocyanate components, and application by standard methods including spray, roll, brush, and pour. The low viscosity supports formulation of solvent-free and low-VOC coating and casting systems without the need for viscosity-reducing diluents or heating. Automated two-component dispensing equipment handling Amivion PEA-40 can operate at standard pressure and temperature conditions without special modifications.
- Water Miscibility and Broad Solvent Compatibility: Amivion PEA-40 is fully miscible with water at ambient temperature and compatible with a range of polar organic solvents including alcohols, glycol ethers, and ketones. This miscibility profile supports its incorporation into waterborne epoxy hardener formulations as well as into solvent-free systems. The product is compatible with standard liquid epoxy resins of the bisphenol A and bisphenol F types, and with aliphatic epoxy resins used in UV-stable and exterior-grade formulations. It may be blended with difunctional polyetheramine grades such as Amivion PEA-22 or Amivion PEA-23 to tune the crosslink density and mechanical properties of the cured system.
Typical Applications
Amivion PEA-40 is widely used in epoxy floor coating systems for industrial environments, including food and beverage processing facilities, pharmaceutical manufacturing areas, logistics warehouses, and automotive workshops where chemical spill resistance and mechanical durability are simultaneously required. The trifunctional crosslinked network formed with Amivion PEA-40 provides better resistance to solvent-borne cleaning agents and acidic or alkaline process chemicals compared with difunctional polyetheramine-cured systems, while the polyether backbone maintains adequate impact resistance and resistance to crack propagation under point loading and wheeled traffic. Amivion PEA-40 is also evaluated in epoxy casting and encapsulation systems for electrical and electronic components, where the combination of chemical resistance, toughness, and electrical insulation properties in the cured material is required across a defined operating temperature range.
In structural adhesive applications, Amivion PEA-40 contributes to formulations where moderate flexibility combined with chemical resistance and good adhesion to metal, concrete, and composite substrates are primary performance requirements. Adhesive systems formulated with Amivion PEA-40 are evaluated in transportation, construction, and infrastructure bonding applications where environmental exposure and chemical contact are part of the service environment. In two-component polyurethane coatings and sealants, Amivion PEA-40 serves as an anti-sag reactive amine component, enabling vertical surface application without sagging during the initial cure stage. The product may also be used in fiber-reinforced composite laminates and infusion systems where a tighter network structure and improved chemical resistance are required relative to standard difunctional polyetheramine-based systems. Amivion PEA-40 is commonly combined with difunctional polyetheramine curatives such as Amivion PEA-22 or Amivion PEA-23 in blended curative packages to achieve intermediate crosslink densities and tailored mechanical property profiles.
Technical Specifications
- Chemical Type: Trifunctional polypropylene oxide-based primary amine (polyoxypropylenetriamine)
- Appearance: Colorless to pale yellow low-viscosity liquid
- AHEW (Amine Hydrogen Equivalent Weight): To be confirmed based on the final specification sheet.
- Total Amine Content: To be confirmed based on the final specification sheet.
- Density at 25°C: To be confirmed based on the final specification sheet.
- Viscosity at 25°C: To be confirmed based on the final specification sheet.
- Water Content: To be confirmed based on the final specification sheet.
Storage Recommendations
- Recommended maximum storage temperature: To be confirmed based on the final specification sheet.
- Store in a dry, well-ventilated area in tightly closed containers away from heat sources and direct sunlight.
- A nitrogen or dry-air blanket is recommended to minimize moisture absorption and carbon dioxide uptake during storage.
- Avoid contact with strong oxidizing agents, strong acids, and isocyanates during storage.
Packaging & Transport
- Standard Packaging: To be confirmed based on the final specification sheet.
- Net Weight: 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 PEA-40: Safety & Handling
Amivion PEA-40 should be handled in accordance with applicable safety procedures for primary aliphatic amine compounds. The product has an alkaline pH in aqueous solution and may cause skin and eye irritation on direct contact. Vapors generated at elevated temperatures may cause respiratory tract irritation, and the product reacts exothermically and rapidly with isocyanates, necessitating care to prevent inadvertent contact with isocyanate-containing materials during storage and handling. Personnel should use chemical-resistant gloves, eye protection, and respiratory protection appropriate for the working conditions. Users should consult the Safety Data Sheet prior to use and observe all applicable occupational health and safety regulations.
Safety Data Sheet and destination-compliant labeling documentation for Amivion PEA-40 are available upon request. For related polyetheramine products in the Amivion range, see also Amivion PEA-22 and Amivion PEA-23.