Bomar Oligomer Product
UV/EB Oligomer

BR-374

BR-374: Difunctional Aliphatic Polyether Urethane Acrylate Oligomer

BR-374, a medium molecular weight, difunctional, aliphatic polyether urethane acrylate oligomer, is a material offering a balance of toughness and flexibility, with very low color. Formulations with BR-374 yield high clarity films or tie layers with adhesion to a variety of substrates, making it ideal for laminating applications.

Neat Properties
Property Value
Viscosity cP (25ºC) 35,000
Pt-Co (APHA) Color <50
Refractive Index (25ºC) 1.46
Density, g/cm3 (25ºC) 1.10
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 49A 79A 68D 43D 53D
Elastic Modulus (GPa [ksi]) X X X X X
Elongation (%) 290 400 4 20 5.5
MEK Double Rubs (#) 4 3 141 24 44
Tensile Strength (MPa [psi]) 4.1 [600] 9.7 [1400] 9.7 [1400] 6.9 [1000] 6.2 [900]
Water Absorption (%) 24hrs
Viscosity (cP) 3,600 @ 25ºC 800 @ 25ºC 3,400 @ 25ºC 1,000 @ 25ºC 500 @ 25ºC — @ 25ºC

Features

  • Very low color
  • Enhances flexibility
  • Exhibits hydrolytic stability
  • Oil and chemical resistant
  • Improved adhesion
  • Non-yellowing
  • Provides weatherability

Applications

  • Peroxide-cure roof coatings
  • Floor coatings
  • Laminating adhesives
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