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

Allnex CYMEL 303 Amino Resin

Allnex CYMEL 303 is a high-reactivity methylated melamine-formaldehyde amino resin from the CYMEL® series, widely used as a crosslinker in thermosetting coatings for automotive and industrial applications due to its excellent cure speed, hardness, and chemical resistance.
  • allnex cymel 303 amino resin_ea347eca
  • allnex cymel 303 amino resin_ea347eca

Features Of Allnex CYMEL 303 Amino Resin

  1. Highly reactive melamine-formaldehyde resin offering excellent cure speed at low baking temperatures.

  2. Outstanding compatibility with acrylic, polyester, and alkyd resins in solventborne coating systems.

  3. Delivers superior hardness, gloss retention, and chemical resistance in thermoset coatings.

  4. Low free formaldehyde content, supporting safer handling and regulatory compliance (e.g., REACH).

  5. Good storage stability when formulated with appropriate acid catalysts and solvents.

Typical Applications Of Allnex CYMEL 303 Amino Resin

  1. Automotive OEM and refinish topcoats requiring high durability and appearance.

  2. Industrial coil coatings for metal roofing, siding, and appliance panels.

  3. General-purpose can coatings for food and beverage containers.

  4. Electrical insulation varnishes for motor and transformer windings.

  5. Wood furniture and cabinet finishes demanding fast line speeds and mar resistance.

Specifications Of Allnex CYMEL 303 Amino Resin

Chemical TypeMelamine-formaldehyde crosslinker
Product FormLiquid
AppearanceClear to slightly hazy, water-white to pale yellow liquid
Solvent ContentApprox. 65–70% (isobutanol/butanol blend)
Non-Volatile Content30–35% (by weight, 105°C, 30 min)
Viscosity (25°C)80–150 mPa·s (Brookfield LV, spindle #3, 60 rpm)
pH (10% solution in water)7.5–9.0
Key FeaturesLow-cure, high-gloss, formaldehyde-controlled, broad resin compatibility


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