EBECRYL® 3720-TM40

EBECRYL® 3720-TM40 is a specific chemical compound used in various applications, predominantly in the coatings and printing industries. It's a mixture of two main components: bisphenol A epoxy diacrylate (EBECRYL® 3720) and trimethylolpropane triacrylate (TMPTA), with the latter being used to dilute the former to reduce viscosity and improve handling.

Here's a breakdown of its key features and applications as mentioned in the technical datasheet:

Introduction:

• EBECRYL® 3720-TM40 is primarily utilized for its fast curing properties when exposed to ultraviolet light (UV) or electron beam (EB).
• It's known for its light color and is used in formulations where maintaining clarity and color integrity is important.
• When cured, it produces films with high gloss, excellent surface hardness, and strong chemical resistance.

Performance Highlights:

• Fast cure response under UV or EB radiation.
• Light color, which is beneficial for applications requiring clarity.

Suggested Applications:

• Clear coatings for paper and plastics.
• Adhesives for laminating paper and film.
• Ink vehicles for screen and metal decorating.
• Wood fillers.
• Photoresists.
• Overprint varnishes.

Specifications and Physical Properties:

• Clear liquid appearance.
• Viscosity range at 25°C: 5500 - 8500 mPa.s.
• Density at 25°C: 1.15 g/cm³.
• Epoxy content: ≤ 0.5%.
• Functionality: Theoretical functionality of 2.

Typical Cured Properties:

• Tensile strength: 8300 psi (57 MPa).
• Elongation at break: 4%.
• Glass transition temperature: 80°C.

The datasheet also provides information on how the viscosity of EBECRYL® 3720-TM40 can be altered using various reactive diluents, and precautions for storage and handling to prevent unwanted polymerization. Additionally, it advises users to refer to the Safety Data Sheet (SDS) for recommended safety measures.