Liquid Latent Curing Agent Ecat-05: Superior Room-Temperature Latency Exceeding 1 Year，Anhydride Pultrusion Accelerator

Products Summary

Shanghai Feimi Materials Technology specializes in the R&D and supply of Ecat-05, a high-performance liquid latent curing agent and accelerator. Ecat-05 is directly miscible with epoxy resins, significantly simplifying processing and blending. One-component epoxy formulations using Ecat-05 achieve a room-temperature shelf life of over 1 year. Additionally, it serves as a highly efficient accelerator for anhydride, aromatic amine, and dicyandiamide (DICY) systems. Widely applied in epoxy-anhydride pultrusion composites, 1K structural adhesives, prepregs, and latent potting compounds. Custom formulation support available. As a liquid, Ecat-05 is fully miscible with epoxy resins, streamlining blending and processing workflows. When used as a primary curing agent, it enables single-component (1K) epoxy systems to maintain room-temperature shelf stability exceeding 12 months. As a versatile accelerator, Ecat-05 significantly lowers activation temperatures for anhydride, aromatic amine, and dicyandiamide systems. It is the ideal selection for epoxy-anhydride pultrusion composites, 1K structural adhesives, prepregs, and latent encapsulation resins. Ecat-05 demonstrates excellent compatibility with Bisphenol A, Bisphenol F, cycloaliphatic, and modified epoxy resins. Whether functioning as a 1K latent hardener or an accelerator for anhydride pultrusion and aromatic amine formulations, it ensures extended pot life alongside rapid de-blocking and efficient crosslinking at elevated temperatures.

Product Advantages

• Liquid State: Simplified Processing & Zero Settling RiskDirectly dissolves into resin formulations without requiring costly high-shear grinding or 3-roll milling processes associated with solid latent hardeners. Eliminates micro-curing defects and particle sedimentation during long-term storage.
• Ultra-Long Room Temperature Latency (1+ Year Shelf Life)Provides exceptional latency stability. Formulated 1K adhesives and potting compounds remain stable at room temperature for over 12 months with negligible viscosity build-up, facilitating transport, storage, and application.
• Broad-Spectrum & Highly Efficient AccelerationFunctions as a potent accelerator for anhydride (e.g., pultrusion processes), aromatic amine, and dicyandiamide (DICY) systems. Significantly reduces cure temperatures and shortens cycle times while maintaining workable open time.
• Superior Mechanical Properties & High Tg RetentionDelivers rapid crosslinking upon thermal de-blocking, producing high-density cured networks with superior tensile shear strength and exceptional glass transition temperatures (Tg).

Typical Properties

Cured Products Performance

Product Applications

• Anhydride Pultrusion Composites: Ideal for wind turbine cable cores, rock bolts, and pultruded profiles. Delivers long bath life combined with ultra-fast line speed curing at elevated temperatures.
• Single-Component (1K) Epoxy Adhesives: Combines 1+ year room temperature storage stability with rapid heat-curing capability.
• Composite Epoxy Prepregs & Filament Winding: Suitable for carbon fiber and glass fiber prepregs, ensuring tack stability and excellent autoclave or compression molding performance.
• Latent Epoxy Potting Compounds: Engineered for 1K electrical insulation potting in electric motors and transformers.
• Electrical Tapes & Insulating Tapes

Handling, Storage & Expiry

• Handling & Safety: Please refer to the Safety Data Sheet (SDS / MSDS).

Shelf Life & Storage Conditions:

• Minimum 12 months from the date of manufacture.
• Store sealed in a cool, dry, and dark environment. Avoid exposure to moisture and air.

FAQ

• Q1: What are the key advantages of Ecat-05 over traditional solid latent curing agents (such as Micronized DICY or Microencapsulated Hardeners)? A: Traditional solid curing agents (like micronized DICY powders) require high-shear dispersion into the resin matrix, which often leads to particle settling, uneven dispersion, and rapid viscosity increases over time. Ecat-05 is liquid and fully miscible with epoxy resins. It eliminates complex grinding processes, prevents settling defects, and delivers superior microscopic homogeneity and light transparency in the cured matrix.
• Q2: Which resin systems benefit most from Ecat-05 as an accelerator, and how effectively does it reduce curing temperatures? A: Ecat-05 is a versatile latent accelerator optimized for three main curing systems: Anhydride Systems: Significantly accelerates cure speeds in pultrusion molds to boost line productivity. Aromatic Amine Systems: Lowers activation temperatures for aromatic amines (e.g., DETDA, DDS, DDM) to enable faster cure at moderate temperatures. DICY Systems: Lowers the reaction activation energy of dicyandiamide, achieving efficient and complete curing at 120℃.
• Q3: Does Shanghai Feimi Materials offer formulation adjustments and technical support for pultrusion or adhesive processes? A: Yes. Shanghai Feimi Materials has a dedicated R&D and technical service team specializing in fine chemical formulations. Beyond supplying Ecat-05 monomer, we offer custom formulation, co-blending optimization, and process support tailored to your specific line speed, latency/summer storage requirements, and peak exotherm targets.