Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Covestro Powder Coating Curing Agent EF-403

Covestro Powder Coating Curing Agent EF-403 is a high-performance benzoguanamine-based crosslinker from the EF series, engineered for exceptional flow, gloss retention, and rapid cure at low temperatures. It enhances durability, chemical resistance, and substrate adhesion in architectural and appliance coatings while meeting stringent sustainability standards.
  • covestro powder coating curing agent ef 403_710e8391
  • covestro powder coating curing agent ef 403_710e8391

Features Of Covestro Powder Coating Curing Agent EF-403

  1. High reactivity with epoxy resins enabling fast cure at low temperatures (160–180 °C).

  2. Excellent storage stability in powder blends—no premature gelation or viscosity increase.

  3. Delivers superior mechanical properties including high gloss, impact resistance, and flexibility.

  4. Low volatile organic compound (VOC) content—fully compliant with strict environmental regulations.

  5. Consistent batch-to-batch performance supported by Covestro’s rigorous quality control system.

Typical Applications Of Covestro Powder Coating Curing Agent EF-403

  1. Automotive components including wheels, brackets, and under-hood parts.

  2. Architectural aluminum profiles for windows, façades, and curtain walls.

  3. Industrial appliances such as washing machines, ovens, and HVAC enclosures.

  4. Outdoor furniture and garden equipment requiring weather-resistant finishes.

  5. Office furniture frames and metal shelving systems.

Specifications Of Covestro Powder Coating Curing Agent EF-403

Chemical TypeModified dicyandiamide (DICY)-based curing agent
Product FormFree-flowing white to off-white crystalline powder
AppearanceUniform fine powder, no lumps or visible impurities
Primary ApplicationsEpoxy and hybrid (epoxy-polyester) thermosetting powder coatings
Key FeaturesLow-cure, high-gloss, excellent flow and leveling
BenefitsEnergy-efficient curing, enhanced edge coverage, reduced film defects
Storage ConditionsStore in cool, dry place below 25 °C; keep container tightly sealed
Shelf Life12 months from date of manufacture under recommended conditions


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