Bomar Oligomer Product
UV/EB Oligomer

BR-344

BR-344: Difunctional Aliphatic Polyether Urethane Acrylate Oligomer

BR-344, a high molecular weight, difunctional, aliphatic polyether urethane acrylate oligomer, is a cost-effective choice for coatings formulations which require weathering durability and non-yellowing characteristics. Formulations with BR-344 result in flexible yet durable, abrasion resistant, non-yellowing systems of moderate- to low-viscosity.

Neat Properties
Property Value
Viscosity cP (25ºC) 20,000
Pt-Co (APHA) Color 10
Refractive Index (25ºC) 1.459
Density, g/cm3 (25ºC) 1.02
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 35A 54A 69D 45D 50D 20A
Elastic Modulus (GPa [ksi]) 1.3 [0.19] 7.6 [1.1] 586.1 [85] 172.4 [25] 241.3 [35] 1.8 [0.26]
Elongation (%) 75 230 2.8 16 8.9 190
MEK Double Rubs (#) 25 17 130 20 15 10
Tensile Strength (MPa [psi]) 0.7 [95] 4.8 [700] 13.8 [2000] 9.0 [1300] 11.0 [1600] 1.9 [270]
Water Absorption (%) 24hrs 0.73 0.46 1.09 0.95 0.77 5.49
Viscosity (cP) 2,500 @ 25ºC 600 @ 25ºC 2,300 @ 25ºC 700 @ 25ºC 300 @ 25ºC 1,700 @ 25ºC

Features

  • Enhances flexibility
  • Develops weatherability
  • Gloss finish
  • Oil and chemical resistant
  • Non yellowing
  • Promotes abrasion resistance
  • Exhibits hydrolytic stability

Applications

  • Roof coatings
  • Floor coatings
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