EBECRYL® 608

EBECRYL® 608 is characterized by:

• Light color
• Fast cure response

UV/EB cured products based on EBECRYL® 608 are characterized by the following performance properties:

• High surface hardness
• Very high gloss
• Excellent chemical resistance
• Low residual odor
• The actual properties of UV/EB cured products also depend on the selection of other formulation components such as reactive diluents, additives and photoinitiators.

Formulated UV/EB curable products containing EBECRYL® 608 may be applied via direct or reverse roll, offset gravure, metering rod, slot die, knife over roll, air knife, curtain, immersion and spin coating methods, as well as offset and screen printing. EBECRYL® 608 is recommended for use in:

• Overprint varnishes
• Lithographic inks and varnishes
• Coatings on wood, chipboard, paper and rigid plastics
• Paper upgrading
• Coatings where low residual odor is required
• Screen inks and coatings

Graph I shows the viscosity reduction of EBECRYL 608 with 1,6-hexanediol diacrylate (HDDA) product of allnex, isobornyl acrylate (IBOA) product of allnex, propoxylated glycerol triacrylate (OTA-480), and tripropylene glycol diacrylate (TPGDA) product of allnex. Although viscosity reduction can be achieved with non-reactive solvents, reactive diluents are preferred because they are essentially 100 percent converted during UV/EB exposure to form a part of the coating or ink, thus avoiding solvent emissions. The specific reactive diluents used will influence performance properties such as hardness and flexibility.

Graph I: Viscosity Reduction With Reactive Diluent

Graph II: Viscosity Vs. Temperature

 

• Care 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.