EBECRYL® 4220

• UV/EB cured coatings based on EBECRYL® 4220 are characterized by the following performance properties:
  • Toughness
  • Low yellowing
• The actual properties of UV/EB energy cured products also depend on the selection of other formulation components such as reactive diluents, additives, and photoinitiators.

EBECRYL® 4220 is designed for use in the formulation of UV/EB energy curable coatings for application by roller coating, spraying, and curtain coating on wood, cork, furniture, paper, parquet, plastics, and film.

• Coatings can be adjusted to appropriate viscosity for the application with additional TPGDA or the addition of other standard reactive diluents such as 1,6-hexanediol diacrylate (HDA), isobornyl acrylate (IBOA), and trimethylolpropane triacrylate (TMPTA) or solvents such as butyl acetate.
• EBECRYL® 4220 is compatible with most acrylate monomers and oligomers. Because of the many potential combinations with reactive diluents and solvents, compatibility must be tested in each individual case.
• UV curing of coatings formulated with EBECRYL® 4220 requires the addition of standard commercial photoinitiators. Typical levels are 4-6%, though this may vary to meet the reactivity requirements of the application. In the case of EB curing, a low oxygen atmosphere must be ensured to avoid surface inhibition.
• Lower gloss coatings can be produced using standard matting agents. Care should be taken with respect to sedimentation which may cause the coating to gel prematurely.

EBECRYL® 4220 should be taken not to expose the product to high temperature conditions, direct sunlight, ignition sources, oxidizing agents, alkalis, or acids. This might cause uncontrollable polymerization of the product with the generation of heat. Storage and handling should be in stainless steel, amber glass, amber polyethylene, or baked phenolic-lined containers. Procedures that remove or displace oxygen from the material should be avoided. Do not store this material under an oxygen-free atmosphere. Dry air is recommended to displace material removed from the container. Wash thoroughly after handling. Keep container tightly closed. Use with adequate ventilation.