Bomar Oligomer Product
UV/EB Oligomer

BRC-443

BRC-443: Difunctional Aliphatic Hydrophobic Urethane Acrylate Oligomer

BRC-443 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 low-yellowing, protective single-coating that extends the substrate’s use-life. The low water absorption and acid and alkaline resistance make this oligomer perfect for the following industries: aerospace, appliance, automotive, electronics, industrial, medical device, metal finishing, and UV-curable inks & coatings. BRC-443 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-443 also shows excellent adhesion to ABS, PVC, PMMA, Nylon-6, and Polystyrene.

Neat Properties
Property Value
Viscosity cP (60ºC) 20,000
Pt-Co (APHA) Color 20
Refractive Index (25ºC) 1.48
Density, g/cm3 (25ºC) 1.09
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 58D 72D 70D 74D 40D
Elastic Modulus (GPa [ksi]) 5.5 [0.8] 65.5 [9.5] 172.4 [25] 206.8 [30] 7.6 [1.1]
Elongation (%) 220 95 14 6.5 180
MEK Double Rubs (#) 18 17 20 14 15
Tensile Strength (MPa [psi]) 10.3 [1500] 11.0 [1600] 9.0 [1300] 9.7 [1400] 8.3 [1200]
Water Absorption (%) 24hrs 0.3 0.2 0.4 0.3 2.4
Viscosity (cP) 15,000 @ 25ºC 1,700 @ 25ºC — @ 25ºC 1,900 @ 25ºC 800 @ 25ºC 4,200 @ 25ºC

Features

  • Low water absorption
  • Improves adhesion
  • High-temperature resistance
  • Enhances hardness
  • Provides acid and alkali resistance
  • Provides abrasion resistance
  • Low Yellowing
  • Increases weatherability

Applications

  • Coatings and inks for steel
  • Coatings and inks for plastic
  • Coatings and inks for glass
Back to top