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High reactivity with standard MEKP initiators for rapid gelation and efficient production cycles.
Excellent mechanical strength and impact resistance after curing, suitable for structural composite parts.
Good compatibility with common fillers (e.g., calcium carbonate, talc) and fiberglass reinforcements.
Low viscosity at room temperature, enabling easy handling, impregnation, and mold wet-out.
Consistent batch-to-batch performance ensured by Chang Chun’s strict quality control and ISO-certified manufacturing.
Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.
Automotive body panels and under-hood components requiring dimensional stability.
Marine deck and hull laminates with balanced toughness and weather resistance.
Industrial grating, cable trays, and corrosion-resistant ductwork.
Pultruded profiles for construction and infrastructure applications.
| Chemical Type | Unsaturated polyester resin (ortho-phthalic based) |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25°C, mPa·s) | 350–450 |
| Gel Time (with 1.0% MEKP, 25°C) | 12–18 minutes |
| Reactive Diluent | Styrene (~38–42 wt%) |
| Solids Content (wt%) | ≈58–62 |
| Storage Stability (25°C) | ≥6 months in sealed container |
Q1: What are the key performance characteristics of ETERSET 2519P?
A: ETERSET 2519P is a medium-reactivity unsaturated polyester resin offering balanced gel time, good mechanical strength development, and excellent surface cure under ambient or low-heat curing conditions. It provides reliable compatibility with common peroxide initiators and exhibits low exotherm during thick-section casting.
Q2: Which initiators are typically recommended for use with this resin?
A: ETERSET 2519P is compatible with standard methyl ethyl ketone peroxide (MEKP) formulations, as well as low-temperature initiators such as benzoyl peroxide (BPO) when heat-cure processing is applied. Initiator selection should be based on required gel time, ambient temperature, and end-use part geometry.
Q3: Can ETERSET 2519P be used in marine or outdoor applications?
A: Yes — it is commonly formulated into laminating and casting systems for marine components, architectural panels, and exterior cladding where resistance to moisture ingress and UV-stable topcoats are employed. Long-term weathering performance depends on full formulation design, including proper pigment loading and protective gel coats.
Q4: How does ETERSET 2519P compare to higher-reactivity resins in terms of processing window?
A: Compared to high-reactivity resins, ETERSET 2519P offers an extended working time at room temperature, supporting larger batch mixing and improved fiber wet-out in hand lay-up or spray-up processes. This makes it particularly suitable for medium-complexity parts where controlled gel progression is critical.
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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
