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

Allnex EBECRYL 6637 Crosslinking Agent

Allnex EBECRYL 6637 is a trifunctional acrylate crosslinking agent from the EBECRYL series, designed for UV/EB-curable coatings and inks. It delivers rapid cure speed, high crosslink density, excellent hardness, and low shrinkage. Compatible with acrylic oligomers and monomers, it enhances chemical resistance and surface performance without volatile organic compounds.
  • allnex ebecryl 6637 crosslinking agent_65ddc65f
  • allnex ebecryl 6637 crosslinking agent_65ddc65f

Features Of Allnex EBECRYL 6637 Crosslinking Agent

  1. Highly functional aliphatic urethane acrylate oligomer designed for rapid UV/EB curing.

  2. Excellent compatibility with common (meth)acrylate monomers and oligomers in free-radical systems.

  3. Delivers superior hardness, chemical resistance, and abrasion resistance in cured films.

  4. Low viscosity enables easy formulation handling and improved pigment/wetting agent dispersion.

  5. Non-yellowing performance ensures long-term clarity and color stability in demanding applications.

Typical Applications Of Allnex EBECRYL 6637 Crosslinking Agent

  1. UV-curable wood coatings for furniture, flooring, and cabinetry.

  2. Industrial metal coatings requiring high durability and corrosion protection.

  3. Plastic coatings for automotive interior trim and electronic device housings.

  4. Overprint varnishes and protective topcoats for packaging and premium printed media.

  5. 3D printing resins where toughness and dimensional stability are critical.

Specifications Of Allnex EBECRYL 6637 Crosslinking Agent

Chemical TypeAliphatic urethane acrylate oligomer
Product FormLiquid
AppearancePale yellow to light amber, clear liquid
Viscosity (25 °C, mPa·s)8,000–12,000
Acid Value (mg KOH/g)< 5
Funct. Acrylate Groups per Molecule (avg.)~4.2
Refractive Index (25 °C)1.475–1.485
Storage Stability (unopened, 25 °C)≥ 12 months


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