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High reactivity with standard peroxide initiators, enabling fast gel times and efficient production cycles.
Excellent mechanical strength and dimensional stability after curing, suitable for structural composite applications.
Good resistance to water, weak acids, and alkaline environments in cured form.
Low viscosity for easy handling, wet-out of reinforcements (e.g., glass fiber), and improved mold filling.
Consistent batch-to-batch quality with strict process control per Chang Chun’s ISO 9001-certified manufacturing.
Fiberglass-reinforced plastic (FRP) tanks and vessels for chemical storage.
Pultruded profiles including rods, channels, and gratings for construction and infrastructure.
Sheet molding compound (SMC) components for automotive under-hood and exterior parts.
Centrifugally cast pipes and manholes for municipal wastewater systems.
Marine deck cores and non-structural hull components requiring balanced performance and processability.
| Chemical Type | Orthophthalic unsaturated polyester resin |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25°C, mPa·s) | 250–350 |
| Gel Time (100 g, 2% MEKP, 25°C, min) | 12–18 |
| Solid Content (% w/w) | 99.5–100.0 |
| Density (25°C, g/cm³) | 1.12–1.16 |
| Reactive Diluent | Styrene (35–40% w/w) |
Q1: What are the key performance characteristics of ETERSET 2446T?
A: ETERSET 2446T is a medium-viscosity, general-purpose unsaturated polyester resin designed for excellent mechanical strength, good chemical resistance, and balanced cure speed. It offers favorable wet-out behavior with fiberglass reinforcements and supports both room-temperature and elevated-temperature curing systems using standard peroxide initiators.
Q2: Which initiators are typically recommended for curing ETERSET 2446T?
A: The resin is compatible with common organic peroxides such as methyl ethyl ketone peroxide (MEKP) for ambient-cure applications and benzoyl peroxide (BPO) or dicumyl peroxide (DCP) for elevated-temperature processing. Initiator selection and dosage depend on the required gel time, final part thickness, and production conditions.
Q3: Can ETERSET 2446T be used in reinforced composites for outdoor applications?
A: Yes — it is widely used in fiberglass-reinforced structures exposed to weathering, such as marine components, architectural panels, and industrial enclosures. For extended UV resistance, it is recommended to combine with suitable UV absorbers and pigmented topcoats or gel coats.
Q4: How should ETERSET 2446T be stored to maintain stability?
A: Store in tightly sealed containers in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and incompatible materials (e.g., strong acids, bases, or accelerators). Under these conditions, shelf life is typically 6 months from date of manufacture when unopened.
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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
