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High reactivity with styrene for rapid gelation and efficient processing.
Excellent mechanical strength and dimensional stability in cured composites.
Good chemical resistance to alkalis, dilute acids, and common solvents.
Low viscosity enabling superior fiber wet-out and high filler loading capacity.
Consistent batch-to-batch performance supported by Evonik’s stringent quality control.
Fiberglass-reinforced plastic (FRP) tanks and vessels for chemical storage.
Automotive body panels and under-hood components requiring thermal resilience.
Marine deck and hull laminates demanding moisture resistance and impact toughness.
Wind turbine blade structural matrices in medium-performance segments.
Industrial grating, ducting, and corrosion-resistant piping systems.
| Chemical Type | Unsaturated polyester resin |
| Product Form | Liquid |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25 °C, mPa·s) | 350–450 |
| Solid Content (% w/w) | 99.5–100.0 |
| Acid Value (mg KOH/g) | 16–20 |
| Reactive Diluent | Styrene (approx. 38–42% w/w) |
| Storage Stability (25 °C) | ≥6 months in sealed original container |
Q1: What is the primary function of Evonik L210 in polyester resin systems?
A: Evonik L210 is a reactive liquid polyester resin designed to serve as a co-resin or modifier in unsaturated polyester (UPE) and vinyl ester formulations. It enhances flexibility, improves impact resistance, and contributes to better adhesion in fiber-reinforced composites without significantly compromising cure speed or final hardness.
Q2: Is Evonik L210 compatible with common free-radical initiators used in ambient or elevated temperature curing?
A: Yes, L210 is fully compatible with standard peroxide initiators such as MEKP (methyl ethyl ketone peroxide) and BPO (benzoyl peroxide), and performs reliably across typical ambient and heated cure cycles used in pultrusion, spray-up, and RTM processes.
Q3: How does L210 affect viscosity and processability in formulated resins?
A: L210 has low intrinsic viscosity and acts as an effective reactive diluent, helping to reduce overall system viscosity without volatile organic compounds (VOCs). This supports improved wet-out of reinforcements and enables easier handling in high-solids or low-VOC formulations.
Q4: Can L210 be used in marine-grade or corrosion-resistant composite applications?
A: Yes — due to its hydrolytic stability and low water absorption characteristics, L210 is frequently selected for demanding environments including marine hulls, chemical storage tanks, and industrial linings where long-term resistance to moisture and aggressive media is required.
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E-mail: wangxingqiang@ericwchem.com
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