EBECRYL® 745

EBECRYL® 745 is a diluted acrylic polymer used primarily as the primary or modifying oligomer in ultraviolet light (UV) or electron beam (EB) curable formulations to enhance adhesion on challenging substrates. It is composed of 46% by weight acrylic polymer diluted with a 1:1 ratio of the reactive diluents 1,6-hexanediol diacrylate (HDDA) and tripropylene glycol diacrylate (TPGDA).

Performance Highlights:

• Moderate viscosity
• Light color

Characteristics of UV Cured Products with EBECRYL® 745:

• Adhesion to difficult substrates
• Flexibility

Suggested Applications:

• Silk screen inks
• Coatings on plastics
• Adhesives and inks for challenging substrates such as untreated polyester, polypropylene, polystyrene, etc.

Specifications:

• Color (Gardner): Maximum 3
• Appearance: Clear to Slightly Hazy Liquid
• Acid value, mg KOH/g: Maximum 1
• Viscosity at 25°C: 15,000 - 25,000 mPa.s

Typical Physical Properties:

• Density at 25°C: 1.05 g/cm³
• Oligomer content: 54% by weight
• TPGDA content: 23% by weight
• HDDA content: 23% by weight

Typical Cured Properties:

• Tensile strength: 1900 psi (13 MPa)
• Elongation at break: 52%
• Glass transition temperature: 30°C

Precautions:

• Refer to the Safety Data Sheet (SDS) before using EBECRYL® 745 for information on identified hazards, recommended personal protective equipment, and procedures.
• Avoid exposure to high temperature conditions, direct sunlight, ignition sources, oxidizing agents, alkalis, or acids, as they may cause uncontrollable polymerization of the product.
• Store and handle EBECRYL® 745 in appropriate containers such as stainless steel, amber glass, amber polyethylene, or baked phenolic lined containers.
• Avoid procedures that remove or displace oxygen from the material. Do not store this material under an oxygen-free atmosphere.
• Wash thoroughly after handling and keep the container tightly closed. Use with adequate ventilation.

For the recommended storage temperature range for EBECRYL® 745, refer to the SDS.