EBECRYL® 3720-HD20 is a bisphenol A epoxy diacrylate diluted with 20% by weight of the reactive diluent 1,6-hexanediol diacrylate (HDDA). Here are some key details about this product:
Introduction: EBECRYL® 3720-HD20 is designed to provide a lower viscosity and easier handling compared to undiluted bisphenol A epoxy diacrylate (EBECRYL® 3720). It exhibits light color and fast cure response. When cured via ultraviolet light (UV) or electron beam (EB), it produces films with high gloss, surface hardness, and superior chemical resistance.
Performance Highlights:
- Light color
- Low viscosity
- Fast cure response
- High surface hardness
- High gloss
- Good water resistance
- Good chemical resistance
Suggested Applications: EBECRYL® 3720-HD20 is recommended for use in various UV/EB curable products, including:
- Overprint varnishes
- Coatings for wood, chipboard, paper, and rigid plastics
- Screen print inks and coatings
- Adhesives for paper laminations
- Wood fillers
Specifications:
- Acid value: Maximum 2 mg KOH/g
- Appearance: Clear liquid
- Color, Gardner: Maximum 2
- Viscosity, 25°C: 6000 - 10000 mPa.s
Typical Physical Properties:
- Density, g/cm³ at 25°C: 1.14
- Epoxy content: ≤ 0.4%
- Functionality, theoretical: 2
- Oligomer, % by weight: 80
- HDDA, % by weight: 20
Typical Cured Properties:
- Tensile strength: 9900 psi (68 MPa)
- Elongation at break: 7%
- Glass transition temperature: 91°C
Precautions: Before using EBECRYL® 3720-HD20, it's important to consult the Safety Data Sheet (SDS) for information on hazards and recommended safety procedures. Storage and handling should be done carefully to avoid exposure to high temperature conditions, direct sunlight, ignition sources, oxidizing agents, alkalis, or acids.
Overall, EBECRYL® 3720-HD20 is a versatile material suitable for various UV/EB curable applications, offering excellent performance properties and ease of handling.