Bomar Oligomer Product
UV/EB Oligomer

BR-551M

BR-551M: Difunctional Aliphatic Polyether Urethane Methacrylate Oligomer

BR-551M is an oligomer that provides excellent acetone removability when used in gel polish applications. Low heat generation occurs during cure with UV/LED lamps that are typically used in nail gel polish applications. The resultant coating also has high gloss and has low APHA color impact. Furthermore, this oligomer was designed to meet regulatory expectations for salon applications in Europe.

Neat Properties
Property Value
Viscosity cP (25ºC) 60,000
Pt-Co (APHA) Color 45
Refractive Index (25ºC) 1.48
Density, g/cm3 (25ºC) 1.06
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 55D 66D 84D 63D 69D 53D
Elastic Modulus (GPa [ksi]) 137.9 [20] 448.2 [65] 965.3 [140] 379.2 [55] 448.2 [65] 172.4 [25]
Elongation (%) 75 100 3.3 9.4 4.5 70
MEK Double Rubs (#) 18 17 98 16 147 14
Tensile Strength (MPa [psi]) 9.0 [1300] 13.8 [2000] 20.0 [2900] 9.7 [1400] 11.0 [1600] 6.9 [1000]
Water Absorption (%) 24hrs 0.4 0.23 0.48 0.54 0.4 1.98
Viscosity (cP) 5,100 @ 25ºC 900 @ 25ºC 3,800 @ 25ºC 1,000 @ 25ºC 400 @ 25ºC 2,300 @ 25ºC

Features

  • Fast acetone soak-off
  • Very low viscosity
  • Low heat generation
  • Low APHA color
  • High gloss
  • Low MeHQ levels

Applications

  • LED curing nail polish
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