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High-purity bisphenol-A based liquid epoxy resin with consistent epoxide equivalent weight (EEW).
Excellent thermal stability and low volatility, supporting safe handling in industrial processing.
Optimized viscosity for enhanced processability in casting, impregnation, and coating applications.
Superior adhesion to metals, composites, and cured polymer substrates.
Low chloride content ensuring high electrical insulation performance and corrosion resistance.
Electrical insulation systems for transformers, reactors, and high-voltage bushings.
Structural adhesive formulations in aerospace and automotive composite bonding.
Encapsulation and potting compounds for electronic modules and power electronics.
Reinforced laminates in printed circuit board (PCB) prepreg and base materials.
High-performance coatings for corrosion protection of steel infrastructure and pipelines.
| Chemical Type | Bisphenol-A diglycidyl ether (DGEBA) |
| Product Form | Clear, low-viscosity liquid |
| Appearance | Colorless to pale yellow, transparent |
| Epoxide Equivalent Weight (EEW) | 185–192 g/eq |
| Viscosity at 25°C | 12,000–15,000 cP |
| Chloride Content | ≤ 500 ppm |
| Softening Point | 12–16°C |
| Storage Stability | ≥ 12 months at <25°C in sealed containers |
Q1: What is the primary function of KUKDO YD-019 4 in epoxy formulations?
A: KUKDO YD-019 4 functions as a reactive diluent and viscosity modifier, helping to reduce system viscosity without significantly compromising crosslink density or thermal performance.
Q2: Is KUKDO YD-019 4 compatible with standard amine-based hardeners?
A: Yes, it exhibits good reactivity and compatibility with common aliphatic, cycloaliphatic, and aromatic amine hardeners, supporting consistent cure behavior across diverse formulation systems.
Q3: How does YD-019 4 compare to traditional glycidyl ether diluents in terms of volatility and handling?
A: It offers lower volatility and higher molecular weight than conventional mono-functional diluents, resulting in reduced evaporation loss during processing and improved workplace safety profile.
Q4: Can KUKDO YD-019 4 be used in coatings requiring high chemical resistance?
A: Yes — when properly formulated and cured, it contributes to enhanced network integrity, supporting improved resistance to solvents, acids, and alkaline media in protective coating applications.
Q5: What are typical dosage guidelines for incorporating YD-019 4 into epoxy systems?
A: Dosage depends on formulation requirements, but it is typically used at low concentrations — generally ranging from 0.1% to 2% by weight relative to total resin solids — to balance viscosity reduction with mechanical property retention.
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