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High purity bisphenol-A based liquid epoxy resin with consistent epoxide equivalent weight (EEW).
Excellent adhesion to metals, composites, and cured thermoset substrates.
Low viscosity (10,000–12,000 cP at 25°C) enabling easy processing and impregnation.
Good thermal stability and hydrolytic resistance for demanding service environments.
Compatible with standard amine, anhydride, and phenolic hardeners for versatile curing profiles.
Structural adhesives for aerospace and automotive bonding.
Matrix resin in fiber-reinforced composites (e.g., carbon/glass fiber laminates).
Electrical encapsulation and potting compounds for high-voltage components.
Coating systems for corrosion protection of steel infrastructure and marine equipment.
High-performance flooring and grouting formulations in industrial facilities.
| Chemical Type | Bisphenol-A diglycidyl ether (DGEBA) |
| Product Form | Clear, low-viscosity liquid |
| Appearance | Pale yellow to water-white, transparent |
| Epoxide Equivalent Weight (EEW) | 185–192 g/eq |
| Viscosity (25°C) | 10,000–12,000 cP |
| Chloride Content | ≤ 500 ppm |
| Softening Point | Not applicable (liquid at room temperature) |
| Primary Applications | Composite matrices, structural adhesives, electrical encapsulants, protective coatings |
Q1: What is the typical molecular weight range of YD-119 Epoxy Resin?
A: YD-119 is a low-to-medium molecular weight bisphenol-A based epoxy resin, generally exhibiting an epoxy equivalent weight in the range of 180–220 g/eq, corresponding to an average molecular weight suitable for high-reactivity liquid systems and solvent-free formulations.
Q2: Is YD-119 compatible with common amine and anhydride curing agents?
A: Yes, YD-119 demonstrates good reactivity and compatibility with standard aliphatic and cycloaliphatic amines, as well as carboxylic anhydrides. Its low viscosity and balanced functionality support uniform mixing and efficient crosslinking across diverse curing systems.
Q3: How does YD-119 perform in high-gloss, chemically resistant coatings?
A: Due to its high purity, low chloride content, and consistent epoxide functionality, YD-119 contributes to excellent film clarity, superior adhesion, and enhanced resistance to alkalis, solvents, and mild acids—making it well-suited for premium protective and decorative coating applications.
Q4: Can YD-119 be used in UV-curable epoxy-acrylate hybrid systems?
A: While YD-119 itself is not directly photosensitive, it can be effectively modified or blended with epoxy-acrylates and photoinitiators to formulate hybrid UV/thermal dual-cure systems—enabling improved depth cure and enhanced mechanical properties in demanding industrial applications.
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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
