Bomar Oligomer Product
UV/EB Oligomer

BR-741MD1

BR-741MD1: Difunctional Aliphatic Polyester Urethane Methacrylate Oligomer

BR-741MD1 is an aliphatic, difunctional polyester urethane methacrylate offering excellent adhesion and flexibility. While not limited to these applications, BR-741MD1 is an effective choice in optically clear coatings and inks for plastics and metals. This oligomer is also perfect for UV & LED nail gel coatings because this material has low skin sensitivity and is INCI listed.

Neat Properties
Property Value
Viscosity cP (60ºC) 2,000
Pt-Co (APHA) Color 30
Refractive Index (25ºC) 1.48
Density, g/cm3 (25ºC) 1.1
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 90D 91D 94D 88D 89D 92D
Elastic Modulus (GPa [ksi]) 2,826.9 [410] 2,551.1 [370] 3,033.7 [440] 2,620.0 [380] 2,482.1 [360] 2,551.1 [370]
Elongation (%) 4 3.5 2.3 4.5 3.0 3.8
MEK Double Rubs (#) >200 154 >200 >200 >200 >200
Tensile Strength (MPa [psi]) 66.2 [9600] 60.7 [8800] 48.3 [7000] 57.9 [8400] 53.1 [7700] 53.8 [7800]
Water Absorption (%) 24hrs 0.21 0.16 0.38 0.40 0.31 0.60
Viscosity (cP) 2,600 @ 25ºC 300 @ 25ºC 2,100 @ 25ºC 300 @ 25ºC 120 @ 25ºC 800 @ 25ºC

Features

  • High tensile strength
  • Excellent surface hardness
  • High gloss
  • Low MeHQ levels
  • Non-yellowing
  • Low skin irritation

Applications

  • UV/LED nail gels
  • Vacuum metalized coatings
  • High hardness coatings
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