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Fast-reacting aliphatic amine-based curing agent for room-temperature and elevated-temperature epoxy systems.
Excellent chemical resistance to acids, alkalis, and solvents after full cure.
Low viscosity (200–300 mPa·s at 25°C) enabling easy metering, mixing, and deep-section penetration.
Low volatility and negligible odor — supports safer handling and improved workplace compliance.
Provides high glass transition temperature (Tg > 100°C) and superior mechanical strength in cured epoxy networks.
Structural adhesives for aerospace composite bonding and metal-to-composite joining.
High-performance protective coatings for industrial flooring and chemical containment linings.
Electrical encapsulants and potting compounds for power electronics and EV battery modules.
Wind turbine blade adhesive systems requiring rapid fixture and long-term environmental stability.
Tooling resins and casting compounds for precision molds and prototype manufacturing.
| Chemical Type | Aliphatic polyamine adduct |
| Product Form | Liquid |
| Appearance | Pale yellow to amber clear liquid |
| Density (25°C) | 0.92–0.95 g/cm³ |
| Viscosity (25°C) | 200–300 mPa·s |
| Amine Value | 380–420 mg KOH/g |
| Primary Applications | Epoxy resin curing for structural adhesives, coatings, and encapsulants |
| Key Features | Room-temperature curable, low exotherm, high Tg, excellent adhesion to metals and composites |
Q1: What types of resins is DX-75A Curing Agent compatible with?
A: DX-75A is specifically formulated for use with epoxy resins, including liquid bisphenol-A and bisphenol-F types, as well as certain novolac epoxies. It demonstrates good reactivity and compatibility in both solvent-based and low-VOC formulations.
Q2: How does DX-75A affect pot life and cure speed compared to conventional amine hardeners?
A: DX-75A offers a balanced profile—providing extended working time at ambient temperatures while enabling efficient post-cure development. Its reactivity is moderated to support controlled gelation, making it suitable for applications requiring longer processing windows without sacrificing final crosslink density.
Q3: Is DX-75A suitable for coatings requiring low surface tack and high gloss retention?
A: Yes—DX-75A contributes to smooth film formation and minimal surface bloom, supporting excellent gloss retention and reduced orange peel in high-performance protective and decorative coatings. Its low volatility and clean cure profile help maintain surface integrity during ambient or mild thermal cure cycles.
Q4: What safety and handling precautions should be observed when using DX-75A?
A: As with most amine-based curing agents, DX-75A may cause skin and eye irritation. Users should wear appropriate personal protective equipment—including nitrile gloves, safety goggles, and respiratory protection if mist or vapor is generated. Ensure adequate ventilation during handling and avoid prolonged or repeated skin contact.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
