Amivion PEA-22 is a polypropylene oxide-based difunctional polyetheramine supplied as a low-viscosity liquid for use as an epoxy resin curing agent. The product belongs to the class of polyoxypropylenediamine compounds, in which two primary amine groups are located on secondary carbon atoms at the termini of a polypropylene glycol backbone chain. Amivion PEA-22 reacts with epoxy resins through amine-epoxide ring-opening addition, forming crosslinked polymer networks that combine mechanical toughness with flexibility and resistance to surface blushing under ambient cure conditions. The product is used in protective coatings, structural adhesives, fiber-reinforced composites, and casting systems across a range of industrial and infrastructure applications.
Amivion PEA-22 Overview
Amivion PEA-22 belongs to the polyoxyalkylenediamine family of epoxy curing agents, characterized by a polypropylene oxide backbone terminated with primary amine groups. The flexible polyether chain imparts chain mobility and segmental motion to the cured epoxy network, producing thermoset structures with lower glass transition temperatures and higher elongation at break compared with conventional aliphatic or cycloaliphatic amine curatives. The two primary amine groups in Amivion PEA-22 each react with up to two epoxide equivalents through a sequential ring-opening mechanism, enabling stoichiometric formulation based on the amine hydrogen equivalent weight of the product. Amivion PEA-22 is miscible with water and with a broad range of organic solvents including alcohols, ketones, and aromatic hydrocarbons, which supports its use in solventborne, waterborne, and solvent-free coating and adhesive formulations.
Key Features
- Flexible Epoxy Networks via Polyether Backbone: Amivion PEA-22 introduces a polypropylene oxide soft segment into the epoxy crosslinked network upon cure. This polyether architecture reduces network rigidity, lowers internal stress, and enhances the impact resistance and elongation-at-break of the cured system relative to short-chain aliphatic amine curatives. The resulting thermoset maintains structural integrity under dynamic loading conditions and demonstrates reduced brittleness at low temperatures, making Amivion PEA-22 particularly suited to applications requiring toughness alongside chemical resistance.
- Primary Amine Reactivity for Controlled Crosslinking: The two primary amine groups in Amivion PEA-22 react cleanly with epoxide groups through ring-opening addition, with each primary amine capable of reacting with two epoxide equivalents. This well-defined functionality enables precise stoichiometric calculation and reproducible gel times and cure profiles. The primary amine character of the reactive groups also supports compatibility with a wide range of liquid epoxy resins, including bisphenol A and bisphenol F types, as well as with aliphatic epoxy resins used in UV-stable outdoor coating formulations.
- Low Viscosity for Easy Processing: Amivion PEA-22 is a low-viscosity liquid at ambient temperature, which simplifies mixing operations in both manual and automated dispensing systems. Its low viscosity reduces the mixing energy required to achieve homogeneous blending with liquid epoxy resins and facilitates application by brush, roller, spray, and pour methods without the need for diluents. This processing characteristic supports formulation of low-VOC and solvent-free coating and adhesive systems that comply with stringent environmental and workplace safety requirements.
- Resistance to Surface Blush: Epoxy coatings cured with conventional aliphatic amines in the presence of humidity can develop surface blush, a whitish haze caused by reaction of amine groups with atmospheric carbon dioxide and moisture to form carbamate and carbonate deposits. Amivion PEA-22 cured systems exhibit reduced susceptibility to this phenomenon, which is attributed to the lower basicity of the secondary carbon-attached amine groups and the steric environment of the polyether backbone. This property is advantageous in humid or marine environments where coating aesthetics and intercoat adhesion are critical.
- Broad Solvent and Resin Compatibility: Amivion PEA-22 is miscible with water and with a wide range of organic solvents, including alcohols, ketones, glycol ethers, and aromatic solvents. This broad compatibility enables its use across solventborne, waterborne, and 100% solids formulation platforms. The product is also compatible with reactive diluents and flexibilizing resins commonly used in epoxy formulation, providing formulators with flexibility in managing viscosity, pot life, and final mechanical properties of the cured system.
Typical Applications
Amivion PEA-22 is widely used as an epoxy curing agent in protective coating systems for industrial and infrastructure applications. In floor coating and civil engineering applications, the product contributes to formulations that require flexibility to accommodate substrate movement and thermal cycling without cracking. Marine and offshore coatings benefit from the reduced surface blushing and the moisture-tolerant cure behavior of Amivion PEA-22, which allows application in high-humidity environments with minimal impact on film formation quality. The product is also used in waterborne epoxy systems where its water miscibility allows incorporation into aqueous amine curing agent formulations designed for low-emission interior protective coating applications.
In structural adhesive and composite applications, Amivion PEA-22 is used where toughened bondlines are required to withstand peel, impact, and vibration loading without cohesive failure. Epoxy adhesives formulated with Amivion PEA-22 provide improved peel strength compared with rigid amine-cured systems, supporting their use in transportation, electronics assembly, and panel bonding applications. In fiber-reinforced composite manufacturing, the product contributes to infusion and laminating resin systems where a degree of matrix flexibility is needed to improve resistance to delamination and microcracking under cyclic loading. Additional applications include potting, encapsulation, and casting systems for electrical and electronic components where toughness and thermal cycling resistance are required alongside electrical insulation performance. Amivion PEA-22 is evaluated in combination with other curative components to tailor gel time, peak exotherm, and final mechanical properties.
Technical Specifications
- Chemical Type: Polypropylene oxide-based difunctional primary amine (polyoxypropylenediamine)
- 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, which can cause discoloration and reduce reactivity over time.
- Avoid contact with strong acids, oxidizing agents, and reactive carbonyl compounds.
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-22: Safety & Handling
Amivion PEA-22 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 irritation and eye damage on direct contact. Inhalation of vapors at elevated temperatures may cause respiratory tract irritation. Personnel should use chemical-resistant gloves, safety goggles, and appropriate respiratory protection in areas with inadequate ventilation. Contaminated clothing should be removed promptly and the affected skin area washed thoroughly with water. Users are advised to consult the Safety Data Sheet before handling and to observe all applicable occupational exposure limits and local safety regulations.
Safety Data Sheet and destination-compliant labeling information for Amivion PEA-22 are available upon request. For related polyetheramine and polyamine curing agent products in the Amivion range, see also Amivion AEEA and Amivion MPEPA.