EBECRYL® 629

EBECRYL® 629 is characterized by:

• Moderate viscosity·
• Light color

UV/EB cured properties based on EBECRYL® 629 are characterized by the following performance properties:

• High surface hardness
• Good heat resistance
• Good adhesion to metal, particularly copper

Formulated UV/EB curable products containing EBECRYL® 629 may be applied via screen, direct or reverse roll, and curtain coating methods.
EBECRYL® 629 is recommended for use in:

• Solder resists
• Marking inks
• Adhesion to metallized substrates
• Heat resistant applications

EBECRYL®629 - Viscosity Reduction With Reactive Diluents:

Viscosity Reduction: 

• Graph shows the viscosity reduction of EBECRYL® 629 with 1,6- hexanediol diacrylate (HDDA) , isobornyl acrylate (IBOA) , trimethylolpropane triacrylate (TMPTA) and tripropylene glycol diacrylate (TPGDA).
• 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, thus avoiding solvent emissions.
• The specific reactive diluents used will influence performance properties such as hardness and flexibility.

EBECRYL® 629 - Viscosity vs. Temperature:

Graph illustrates the change in viscosity of EBECRYL® 629 with increasing 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.