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

Allnex CYMEL U-640 Amino Resin

Allnex CYMEL U-640 is a high-reactivity methylated melamine-formaldehyde amino resin from the CYMEL® series, engineered for durable thermoset coatings in automotive and industrial applications. It offers excellent gloss retention, chemical resistance, and compatibility with polyester and acrylic resins—delivering superior crosslinking efficiency and bake performance at low curing temperatures.
  • allnex cymel u 640 amino resin_41dc050f
  • allnex cymel u 640 amino resin_41dc050f

Features Of Allnex CYMEL U-640 Amino Resin

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

  2. Superior compatibility with polyester, acrylic, and alkyd resins in solventborne and high-solids coating systems.

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

  4. Low free formaldehyde content, supporting improved workplace safety and regulatory compliance.

  5. Excellent flow and leveling characteristics for smooth, defect-free film formation.

Typical Applications Of Allnex CYMEL U-640 Amino Resin

  1. Automotive OEM and refinish topcoats requiring high durability and aesthetic performance.

  2. Industrial maintenance coatings for metal substrates exposed to harsh environments.

  3. Appliance coatings demanding excellent mar resistance and long-term color stability.

  4. General-purpose coil coatings where rapid line speed and consistent crosslink density are critical.

  5. Can and closure coatings requiring strong adhesion, corrosion protection, and food-contact compliance (when formulated appropriately).

Specifications Of Allnex CYMEL U-640 Amino Resin

Chemical TypeMelamine-formaldehyde amino resin
Product FormLiquid, low-viscosity solution
AppearanceClear, pale yellow liquid
Solvent ContentApprox. 70–75% (proprietary alcohol/butanol blend)
Non-Volatile Content25–28% w/w
Acid Number1–3 mg KOH/g
Free Formaldehyde<0.3% w/w
Primary ApplicationsCrosslinker for thermosetting decorative and protective coatings on metal


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