Bomar Oligomer Product
UV/EB Oligomer

BRC-843D

BRC-843D: Difunctional Aliphatic Hydrophobic Urethane Acrylate

BRC-843D is a difunctional, hydrophobic urethane acrylate which can be formulated to be used in heavy-duty industrial and commercial applications. The resulting tough film makes an effective, non-yellowing, protective single coating that extends the substrates use-life. The low water absorption and alkaline resistance make this oligomer perfect for the following industries: aerospace, appliance, automotive, cosmetic, electronic, industrial, medical device, metal finishing, and UV-curable inks & coatings. BRC-843D exhibits retention of mechanical properties after exposure to high temperatures (200°C for 30 minutes). In addition to the adhesion properties listed in the table below, BRC-843D also shows excellent adhesion to ABS, PVC, PMMA, and Polystyrene.

Neat Properties
Property Value
Viscosity cP (60ºC) 4,200
Pt-Co (APHA) Color 30
Refractive Index (25ºC) 1.48
Density, g/cm3 (25ºC) 1.07
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 60D 75D 70D 75D 60D
Elastic Modulus (GPa [ksi]) 11.0 [1.6] 137.9 [20] 275.8 [40] 448.2 [65] 13.8 [2]
Elongation (%) 210 120 17.0 9.0 180
MEK Double Rubs (#) 10 15 50 80 50
Tensile Strength (MPa [psi]) 22.1 [3200] 24.8 [3600] 18.6 [2700] 24.1 [3500] 12.4 [1800]
Water Absorption (%) 24hrs 0.4 0.3 0.5 0.4 1.5
Viscosity (cP) 5,400 @ 25ºC 930 @ 25ºC — @ 25ºC 1,000 @ 25ºC 450 @ 25ºC 2,200 @ 25ºC

Features

  • Low MeHQ levels
  • Improves adhesion
  • Enhances hardness
  • High temperature resistance
  • Increases weatherability
  • Provides abrasion resistance
  • Provides alkali resistance
  • Low water absorption

Applications

  • Nail gels
  • Coatings and inks for steel
  • Coatings and inks for plastic
  • Coatings and inks for glass
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