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High reactivity with amine and anhydride curing agents for rapid gelation and short cycle times.
Excellent adhesion to metals, composites, and cured polymer substrates.
Low viscosity (10,000–12,000 cP at 25°C) enabling easy processing, impregnation, and flow control.
Good thermal stability with glass transition temperature (Tg) up to 125°C after full cure.
Low chloride content (<0.05%) ensuring high electrical insulation performance and corrosion resistance.
Electrical encapsulation and potting of transformers, reactors, and high-voltage insulators.
Structural adhesive formulations for aerospace composite bonding and automotive lightweight assemblies.
Matrix resin for filament-wound pressure vessels and fiber-reinforced pipes.
Tooling and mold-making compounds requiring dimensional stability and low exotherm.
High-performance laminating resin for printed circuit board (PCB) prepregs and copper-clad laminates.
| Chemical Type | Bisphenol-A based liquid epoxy resin |
| Product Form | Clear to pale yellow viscous liquid |
| Appearance | Homogeneous, transparent, free from gels or suspended particles |
| Epoxy Equivalent Weight (EEW) | 185–195 g/eq |
| Viscosity (25°C) | 10,000–12,000 cP |
| Chloride Content | ≤0.05 wt% |
| Softening Point | Not applicable (liquid at room temperature) |
| Primary Applications | Encapsulation, structural adhesives, filament winding, tooling |
Q1: What is the primary functional role of KD-448H in epoxy formulations?
A: KD-448H is a reactive liquid diluent designed to reduce viscosity and improve processability of standard bisphenol-A or bisphenol-F based epoxy resins without significantly compromising crosslink density or thermal performance.
Q2: Is KD-448H suitable for high-gloss, low-VOC coating systems?
A: Yes — as a reactive diluent, KD-448H participates in the curing reaction and remains part of the polymer network, contributing to VOC reduction while supporting excellent film formation, hardness development, and gloss retention in industrial and protective coatings.
Q3: How does KD-448H compare to non-reactive diluents in terms of mechanical properties?
A: Unlike non-reactive solvents or plasticizers, KD-448H covalently bonds into the cured matrix, helping maintain tensile strength, chemical resistance, and heat deflection temperature — especially when used at typical incorporation levels.
Q4: Can KD-448H be used in electrical encapsulation or potting compounds?
A: Yes — its low volatility, good compatibility with common epoxy hardeners, and ability to enhance flow and air release make it well-suited for medium- to high-performance encapsulation applications where dielectric integrity and thermal stability are required.
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