Bomar Oligomer Product
UV/EB Oligomer

BR-371MS

BR-371MS: Difunctional Aliphatic Polyether Urethane Methacrylate Oligomer

BR-371MS, a low molecular weight, difunctional, aliphatic polyether urethane methacrylate oligomer, is a great fit for coatings that require high tensile strength, extremely low color, superior hardness, scratch resistance, and weathering resistance. BR-371MS provides very low color and a high viscosity, ideal for hard gel nail coatings, and offers reduced heat generation vs other high tensile strength materials.

Neat Properties
Property Value
Viscosity cP (60ºC) 65,000
Pt-Co (APHA) Color 25
Refractive Index (25ºC) 1.496
Density, g/cm3 (25ºC) 1.11
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 89D 87D 91D 86D 86D 90D
Elastic Modulus (GPa [ksi]) 2,551.1 [370] 2,482.1 [360] 2,551.1 [370] 2,137.4 [310] 2,137.4 [310] 2,689.0 [390]
Elongation (%) 4.6 4.4 3.6 5.6 3.4 6.4
MEK Double Rubs (#) >200 105 >200 >200 >200 >200
Tensile Strength (MPa [psi]) 67.6 [9800] 66.9 [9700] 62.7 [9100] 53.8 [7800] 53.1 [7700] 66.9 [9700]
Water Absorption (%) 24hrs 0.24 0.17 0.35 0.38 0.33 0.64
Viscosity (cP) 33,000 @ 25ºC 2,800 @ 25ºC 11,000 @ 25ºC 900 @ 25ºC 400 @ 25ºC 5,300 @ 25ºC

Features

  • Low heat generation
  • High Tg
  • Extremely low color
  • Superior hardness
  • High tensile strength
  • Excellent adhesion to plastics

Applications

  • Wood coatings
  • Rigid plastic coatings
  • Rigid 3D printing resins
  • Hard gel nail coatings
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