Name: Croda Corona 9 Epoxy Toughener
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Croda Corona 9 Epoxy Toughener

Reactive liquid modifier designed to significantly improve fracture toughness of epoxy resins without compromising glass transition temperature (T_g).
Offers excellent compatibility with standard DGEBA and novolac epoxy systems, enabling homogeneous dispersion without phase separation.
Enables low-viscosity formulations—enhances processability for resin transfer molding (RTM), infusion, and filament winding.
Provides balanced mechanical performance: increases impact resistance and delamination resistance while maintaining tensile strength and modulus.
Halogen-free and REACH-compliant, supporting sustainable composite manufacturing requirements.

Typical Applications Of Croda Corona 9 Epoxy Toughener

Aerospace structural composites—including primary and secondary airframe components.
Wind turbine blade matrices requiring high fatigue resistance and damage tolerance.
High-performance automotive under-hood and structural parts exposed to thermal cycling and mechanical stress.
Railway interior panels and structural adhesives demanding fire, smoke, and toxicity (FST) compliance.
Advanced electronics encapsulation and potting where thermal stability and crack resistance are critical.

Chemical Type	Reactive liquid carboxyl-terminated polybutadiene (CTPB) derivative
Product Form	Low-viscosity amber liquid
Appearance	Clear to slightly hazy, pale yellow liquid
Primary Applications	Epoxy resin toughening for structural composites and adhesives
Key Features	Toughness enhancement, T_g retention, low viscosity, halogen-free
Benefits	Improved impact resistance, reduced microcracking, enhanced processability, regulatory compliance
Storage Stability	Stable for ≥12 months at 15–25°C in sealed containers
Handling	Non-hazardous per GHS; no special ventilation required under normal use

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E-mail: wangxingqiang@ericwchem.com
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