OTA 480

OTA 480 is a trifunctional oligoacrylate used in UV/EB (ultraviolet/electron beam) cured inks and coating systems. It polymerizes when exposed to sources of free radicals and offers new formulating possibilities due to its combination of good flexibility with trifunctionality. Cured films containing OTA 480 provide more flexibility than TMPTA (Trimethylolpropane triacrylate) while retaining hardness, high gloss properties, and a good crosslinking density.

Here are some key points about OTA 480:

Performance Data:

• • Low viscosity
  • Light color
  • Low irritancy
  • Good flexibility and fast cure response in UV/EB cured products

Specifications:

• • Acid value: max. 0.4 mg KOH/g
  • Appearance: Clear liquid
  • Color: max. 60 Apha
  • Residual solvent: max. 0.09 wt. %
  • Viscosity at 25°C: 70 - 110 mPa.s
  • Water content: max. 0.1 wt. %

Typical Physical Properties:

• • Density at 25°C: 1.08 g/cm³
  • Flash point (Setaflash): > 100°C
  • Formula weight: ~456
  • Melting point: < 0°C
  • Vapor pressure at 20°C: < 0.01 mm Hg

Suggested Applications:

• • Reactive diluent for UV/EB cured inks and coatings
  • Suitable for applications where monomers must be avoided or minimized
  • Produces highly crosslinked, flexible yet tough finishes on various substrates such as plastics, paper, or other coated or printed substrates
  • Mainly recommended as a diluent for lithographic ink binders

Storage and Handling:

• • Should not be exposed to temperatures exceeding 40°C for prolonged periods or to direct sunlight
  • Storage and handling should be in appropriate containers (stainless steel, amber glass, amber polyethylene, or baked phenolic lined containers)
  • Material should not be stored for more than 2 years
  • Consult the Safety Data Sheet for specific handling procedures and precautions

Precautions:

• • Toxicological properties not fully determined; may cause eye and skin irritation and have the potential to cause sensitization or other allergic responses
  • Appropriate precautions should be taken to avoid contact with eyes, skin, and inhalation of aerosols or vapors
  • Refer to the Safety Data Sheet for emergency and first aid procedures

Overall, OTA 480 is a versatile oligoacrylate with desirable properties for use in radiation-cured coatings and inks, offering flexibility, toughness, and fast cure response.