EBECRYL® 8210

Aliphatic urethane acrylate primarily used in ultraviolet (UV) light or electron beam (EB) curable coatings. Below are key points regarding its characteristics, applications, and precautions:

Introduction: EBECRYL® 8210 exhibits low viscosity and high reactivity in UV or EB curable coatings. It forms cured films with high hardness and offers good scratch, abrasion, and chemical resistance. Additionally, it contains primary hydroxyl groups that enable dual cure polymerization.

Performance Highlights:

• Low viscosity
• Light color
• Excellent reactivity
• Dual functionality
• UV/EB cured products demonstrate high gloss, good scratch and abrasion resistance, chemical resistance, low yellowing, and adhesion.

Suggested Applications:

• Coatings requiring high scratch/abrasion resistance and improved adhesion.
• As a modifying oligomer to increase cure speed, solvent resistance, and abrasion resistance.
• Suitable for dual cure coating systems.

Specifications:

• Acid value: maximum 8.0 mg KOH/g
• Appearance: Clear liquid
• Color (Gardner): maximum 2
• Viscosity (25°C): 2750 - 5250 mPa.s

Typical Properties:

• Density (25°C): 1.11 g/cm³
• Functionality (theoretical): 3.5
• Hydroxyl value: 75 - 110 mg KOH/g
• NCO: ≤ 0.02%

Typical Cured Properties:

• Tensile strength: 6400 psi (44 MPa)
• Elongation at break: 2.1%
• Young’s modulus: 379000 psi (2614 MPa)
• Glass transition temperature: 68°C

Precautions:

• Refer to the Safety Data Sheet (SDS) for identified hazards, recommended personal protective equipment, and procedures.
• Avoid exposure to high temperatures, direct sunlight, ignition sources, oxidizing agents, alkalis, or acids to prevent uncontrollable polymerization.
• Store and handle in appropriate containers and conditions to prevent polymerization. Use with adequate ventilation.

Storage and Handling:

• Store in stainless steel, amber glass, amber polyethylene, or baked phenolic lined containers.
• Avoid procedures that remove or displace oxygen from the material.
• Wash thoroughly after handling. Keep the container tightly closed.

Overall, EBECRYL® 8210 offers a range of benefits for UV/EB curable coatings, including high performance properties and versatility in application.