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High reactivity with standard peroxide initiators, enabling fast gel time and efficient production cycles.
Excellent mechanical strength and dimensional stability in cured laminates and molded parts.
Good compatibility with common fillers, pigments, and glass fiber reinforcements.
Low viscosity for easy handling, impregnation, and processing via spray-up, hand lay-up, or RTM methods.
Superior weather resistance and UV stability when formulated with appropriate inhibitors and additives.
Fiberglass-reinforced plastic (FRP) tanks and chemical storage vessels.
Marine components including boat hulls, decks, and structural panels.
Industrial corrosion-resistant ducting and exhaust systems.
Architectural cladding, decorative panels, and sanitary ware.
Transportation interior parts and lightweight composite enclosures.
| Chemical Type | Orthophthalic unsaturated polyester resin |
| Product Form | Liquid, ready-to-use |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25°C) | 350–550 mPa·s |
| Solid Content | ≈99.5 wt% |
| Acid Value | 18–24 mg KOH/g |
| Density (25°C) | 1.11–1.14 g/cm³ |
| Styrene Content | 38–42 wt% |
Q1: What are the key performance characteristics of ETERSET 2968-C?
A: ETERSET 2968-C is a medium-reactivity unsaturated polyester resin formulated for excellent balance between gel time control, mechanical strength development, and surface cure. It delivers good thixotropy in filled systems, low exotherm during curing, and reliable compatibility with common styrene monomers and peroxide initiators.
Q2: Which curing agents and accelerators are typically recommended for this resin?
A: ETERSET 2968-C is compatible with standard methyl ethyl ketone peroxide (MEKP) initiators. Accelerators such as cobalt naphthenate or cobalt octoate may be used to adjust gel time and cure profile, depending on ambient conditions and processing requirements. Formulators should conduct small-scale trials to optimize catalyst/accelerator ratios for specific applications.
Q3: Is ETERSET 2968-C suitable for marine or corrosion-resistant laminates?
A: Yes — this resin exhibits good resistance to water ingress and hydrolytic degradation, making it well-suited for structural laminates in marine environments, chemical storage tanks, and corrosion-resistant linings when properly formulated and cured with appropriate reinforcements and barrier layers.
Q4: How does ETERSET 2968-C perform in thick-section casting applications?
A: Due to its controlled reactivity and moderate exotherm profile, ETERSET 2968-C is frequently selected for medium-to-thick section castings where minimizing thermal stress and internal cracking is critical. Optimal results are achieved with staged curing cycles and careful attention to filler selection and air release techniques.
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