EBECRYL® 8402 is an aliphatic urethane diacrylate characterized by its low viscosity and excellent performance when cured by ultraviolet light (UV) or electron beam (EB). Here's a breakdown:
Introduction:
- EBECRYL® 8402 is a low viscosity aliphatic urethane diacrylate.
- Cured films of EBECRYL® 8402 exhibit good flexibility, toughness, and excellent exterior durability.
- It typically develops a semi-crystalline aspect upon storage.
Performance Highlights:
- Low viscosity for ease of handling.
- Light color.
- Cured products are characterized by toughness, flexibility, non-yellowing, and excellent adhesion to difficult substrates, especially vinyl.
Suggested Applications:
- Suitable for coatings for wood, plastics, flexographic inks, screen inks, and exterior durable coatings.
- Can be applied via various methods such as direct or reverse roll, offset gravure, metering rod, slot die, knife over roll, air knife, curtain, immersion, and spin coating methods.
Specifications:
- Appearance: Clear liquid
- Color, Gardner: max. 1
- Viscosity, 65.5°C: 450 - 650 mPa.s
Typical Physical Properties:
- Density, g/cm³ at 25°C: 1.12
- Functionality, theoretical: 2
- Oligomer, % by weight: 100
Typical Cured Properties:
- Tensile strength: 3600 psi (25 MPa)
- Elongation at break: 55%
- Young’s modulus: 68500 psi (472 MPa)
- Glass transition temperature: 35°C
Viscosity Reductions:
- Reactive diluents such as 1,6-hexanediol diacrylate (HDDA), isobornyl acrylate (IBOA), trimethylolpropane triacrylate (TMPTA), and tripropylene glycol diacrylate (TPGDA) can be used to reduce viscosity.
- Viscosity reduction with reactive diluents minimizes solvent emissions and influences performance properties like hardness and flexibility.
Storage and Handling:
- Should be stored away from high temperature conditions, direct sunlight, ignition sources, oxidizing agents, alkalis, or acids.
- Containers should be made of stainless steel, amber glass, amber polyethylene, or baked phenolic lined containers.
- Heating containers of EBECRYL® 8402 to a uniform temperature of 60°C can remove crystallization.
- Recommended storage temperature range should be followed as per the Safety Data Sheet (SDS).
Before using EBECRYL® 8402, it's essential to refer to the Safety Data Sheet (SDS) for information on identified hazards, recommended personal protective equipment, and procedures. Proper storage, handling, and ventilation are crucial for safe use.
