EBECRYL® 244

EBECRYL® 244 is an aliphatic urethane diacrylate diluted with the reactive diluent 1,6-hexanediol diacrylate (HDDA). Here's a breakdown of its key features and specifications based on the technical datasheet:

Introduction:

• EBECRYL® 244 is characterized by its light color and good cure response.
• Films cured by ultraviolet light (UV) or an electron beam (EB) exhibit good flexibility, toughness, abrasion and water resistance, and resistance to yellowing.

Performance Highlights:

• Light color, crystalline viscous liquid.
• UV/EB cured products based on EBECRYL® 244 demonstrate good flexibility, toughness, excellent abrasion resistance, good water, thermal, and electrical resistance, and non-yellowing properties.

Suggested Applications:

• Flexible screen inks and coatings.
• Light stable coatings.
• Electrical insulation coatings.
• Coatings where minimal water absorption is desired (absorbs less than 1% water/24 hr. immersion).

Specifications:

• Appearance at 50°C: Clear liquid.
• Color (Gardner): Maximum 2.
• Viscosity at 60°C: 7000 - 9000 mPa.s.

Typical Physical Properties:

• Density at 25°C: 1.12 g/cm³.
• Functionality (theoretical): 2.
• Oligomer content: 90% by weight.
• HDDA content: 10% by weight.

Typical Cured Properties:

• Tensile strength: 3700 psi (26 MPa).
• Elongation at break: 60%.

Viscosity Reduction:

• Graph I demonstrates the viscosity reduction of EBECRYL® 244 with reactive diluents such as 1,6-hexanediol diacrylate (HDDA), isobornyl acrylate (IBOA), trimethylolpropane triacrylate (TMPTA), and tripropylene glycol diacrylate (TPGDA).
• Reactive diluents are preferred for viscosity reduction as they become part of the coating upon UV/EB exposure, reducing solvent emissions.

Storage and Handling:

• Avoid exposure to high temperature conditions, direct sunlight, ignition sources, oxidizing agents, alkalis, or acids.
• Store in suitable containers and avoid procedures that remove or displace oxygen from the material.
• Recommended storage temperature range can be found in the Safety Data Sheet (SDS).

Before use, it's essential to review the Safety Data Sheet (SDS) for information on identified hazards, recommended personal protective equipment, and procedures.