Bomar Oligomer Product
UV/EB Oligomer

BR-202

BR-202: Difunctional Aromatic Polyether Urethane Methacrylate Oligomer

BR-202, an aromatic polyether urethane dimethacrylate, finds use in a diverse number of UV coating applications. BR-202 is valued for its strong bond strength, its affinity for glass, steel, and a variety of plastic substrates, and for its excellent elongation. BR-202 is also of value for its low initial color (despite its aromatic nature).

Neat Properties
Property Value
Viscosity cP (25ºC) 100,000
Pt-Co (APHA) Color 20
Refractive Index (25ºC) 1.493
Density, g/cm3 (25ºC) 1.08
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 62D 76D 85D 75D 79D 70D
Elastic Modulus (GPa [ksi]) 49.6 [7.2] 517.1 [75] 896.3 [130] 310.3 [45] 482.6 [70] 137.9 [20]
Elongation (%) 110 110 2.7 15 6 95
MEK Double Rubs (#) 20 7 >200 45 70 93
Tensile Strength (MPa [psi]) 11.7 [1700] 17.2 [2500] 20.0 [2900] 15.2 [2200] 17.2 [2500] 9.7 [1400]
Water Absorption (%) 24hrs 0.75 0.39 0.7 0.85 0.6 3.18
Viscosity (cP) 3,500 @ 25ºC 2,600 @ 25ºC 2,800 @ 25ºC 2,900 @ 25ºC 1,300 @ 25ºC 7,600 @ 25ºC

Features

  • High bond strength
  • Exhibits hydrolytic stability
  • Excellent adhesion to diverse substrates
  • Low color
  • High elongation

Applications

  • Primer coatings
  • Interior glass coatings
  • Electronic adhesives
     
Back to top