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Aliphatic polyamine-based curing agent offering low viscosity and excellent compatibility with standard epoxy resins.
Enables rapid room-temperature cure with good mechanical properties and chemical resistance.
Low odor and reduced skin sensitization potential compared to conventional aromatic amines.
Provides superior flexibility and impact resistance in cured epoxy systems.
Compatible with both liquid and solid bisphenol-A and bisphenol-F epoxy resins.
Industrial flooring coatings requiring fast turnaround and high durability.
Concrete repair mortars and grouts for infrastructure rehabilitation.
Electrical encapsulation and potting compounds demanding low exotherm and dimensional stability.
Marine and offshore protective coatings exposed to humid and saline environments.
Adhesives and structural bonding formulations for metal, concrete, and composite substrates.
| Chemical Type | Aliphatic polyamine |
| Product Form | Liquid |
| Appearance | Pale yellow to amber clear liquid |
| Primary Applications | Epoxy coatings, mortars, adhesives, and encapsulation |
| Key Features | Room-temperature cure, low viscosity, low odor, flexible cure profile |
| Benefits | Improved worker safety, extended working time (pot life), enhanced toughness |
| Storage Stability | Stable under dry, cool conditions (≤25 °C) for ≥12 months in original sealed container |
Q1: What is the primary chemical nature of Genamid 491?
A: Genamid 491 is a polyamide-based epoxy curing agent derived from dimerized fatty acids and polyamines. It offers balanced reactivity, flexibility, and adhesion characteristics without requiring elevated cure temperatures.
Q2: How does Genamid 491 perform in high-humidity or damp-surface applications?
A: Due to its low sensitivity to moisture and minimal amine blush formation, Genamid 491 is well-suited for ambient-cure coatings and adhesives applied under moderate humidity or on slightly damp substrates—common in industrial maintenance and marine repair environments.
Q3: Is Genamid 491 compatible with standard bisphenol-A and bisphenol-F epoxy resins?
A: Yes, Genamid 491 demonstrates broad compatibility with conventional liquid and solid epoxy resins, including DGEBA and DGEBF types. It delivers good pot life and film formation across a range of resin molecular weights and functionalities.
Q4: What are typical handling and storage recommendations?
A: Store in tightly sealed containers at temperatures between 10–30 °C, protected from moisture and direct sunlight. Prolonged exposure to air may cause surface skinning or viscosity increase due to atmospheric moisture absorption—therefore, nitrogen blanketing is recommended for extended storage or bulk handling.
Q5: Can Genamid 491 be used in food-contact or potable water applications?
A: Genamid 491 is not pre-qualified for direct food-contact or potable water applications. Formulators must conduct full regulatory evaluation—including migration testing and compliance verification—based on final cured system composition, end-use conditions, and applicable regional regulations.
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E-mail: wangxingqiang@ericwchem.com
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