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High-performance bisphenol-A based liquid epoxy resin with low viscosity for excellent processability.
Superior thermal stability and glass transition temperature (Tg) after curing with standard amine hardeners.
Excellent adhesion to metals, composites, and cured polymer substrates.
Low volatile organic compound (VOC) content, supporting sustainable manufacturing compliance.
Consistent batch-to-batch reproducibility meeting ISO 9001-controlled production standards.
Aerospace composite matrix resins for primary and secondary structural components.
High-voltage electrical encapsulation and insulating potting compounds.
Wind turbine blade adhesive bonding and structural infusion systems.
Automotive under-hood structural adhesives and lightweight composite bonding.
Advanced printed circuit board (PCB) laminates requiring high dimensional stability.
| Chemical Type | Bisphenol-A epoxy resin |
| Product Form | Clear, low-viscosity liquid |
| Appearance | Pale yellow to water-white, transparent |
| Epoxy Equivalent Weight (EEW) | 185–192 g/eq |
| Viscosity at 25°C | 12,000–14,000 cP |
| Chlorine Content | ≤ 750 ppm |
| Softening Point | 10–14°C |
| Storage Stability | 12 months at ≤ 25°C in sealed containers |
Q1: What is the primary functional role of GEBR555A75 in epoxy formulations?
A: GEBR555A75 is a reactive liquid epoxy resin modifier designed to reduce system viscosity, improve flow and wetting characteristics, and enhance flexibility without significantly compromising thermal stability or chemical resistance in cured networks.
Q2: Is GEBR555A75 suitable for high-gloss coatings or electronic encapsulation applications?
A: Yes — its low volatility, excellent compatibility with common bisphenol-A and novolac epoxies, and ability to yield low-shrinkage, optically clear cured films make it well-suited for high-performance coatings, LED encapsulants, and precision potting compounds where clarity and dimensional stability are critical.
Q3: How does GEBR555A75 affect cure kinetics when blended with standard amine hardeners?
A: It generally extends gel time moderately and may slightly lower exotherm peak temperature, offering improved processing window for casting or thick-section applications; final cure schedule should be validated empirically based on the full formulation and desired performance profile.
Q4: Can GEBR555A75 be used in food-contact or pharmaceutical-grade epoxy systems?
A: GEBR555A75 is not pre-qualified for direct food-contact or pharmaceutical use; suitability requires full regulatory review by the formulator, including evaluation of extractables, intended end-use conditions, and compliance with relevant regional requirements for indirect additives.
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E-mail: wangxingqiang@ericwchem.com
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