Bomar Oligomer Product
UV/EB Oligomer

BR-941

BR-941: Difunctional Aliphatic Polyester Urethane Acrylate Oligomer

BR-941, a hexafunctional, aliphatic polyether urethane acrylate, is used in applications that require a hard, chemically resistant, non-yellowing coating or adhesive with very fast cure response. BR-941’s high functionality and low molecular weight deliver its excellent properties to systems with a final viscosity much lower than is typical of urethane acrylates. BR941 is compatible with a broad range of monomers and oligomers.

Neat Properties
Property Value
Viscosity cP (60ºC) 4,000
Pt-Co (APHA) Color 30
Refractive Index (25ºC) 1.496
Density, g/cm3 (25ºC) 1.20
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 92D 90D 92D 91D 90D
Elastic Modulus (GPa [ksi]) 1,861.6 [270] 655.0 [95] 1,310.0 [190] 1,585.8 [230] 1,241.1 [180]
Elongation (%) 7.0 5.0 1.0 1.5 1.5
MEK Double Rubs (#) >200 >200 >200 >200 >200
Tensile Strength (MPa [psi]) 22.8 [3300] 17.2 [2500] 6.4 [930] 14.5 [2100] 11.7 [1700]
Water Absorption (%) 24hrs
Viscosity (cP) 4,400 @ 25ºC 400 @ 25ºC 2,600 @ 25ºC 400 @ 25ºC 120 @ 25ºC - @ 25ºC

Features

  • Fast cure response
  • Oil and chemical resistance
  • Imparts scratch resistance
  • Exhibits hydrolytic stability
  • Provides hardness
  • Low-yellowing
  • Improves abrasion resistance
  • Improves weatherability

Applications

  • Coatings for wood
  • Hard coats for plastic
  • Floor Coatings
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