Bomar Oligomer Product
UV/EB Oligomer

BRC-441D

BRC-441D: Difunctional Aliphatic Hydrophobic Urethane Acrylate Oligomer

BRC-441D is a difunctional, hydrophobic urethane acrylate that can be formulated into chemical and temperature-resistant coatings and resins. The material has low color and excellent adhesion to a wide variety of plastics. The material can be formulated into tough, impact-resistant 3D printing resins with excellent flexibility. It’s ultra-low water absorption makes this an excellent choice for moisture-sensitive or hydrophobic applications.

Neat Properties
Property Value
Viscosity cP (60ºC) 4,700
Pt-Co (APHA) Color 35
Refractive Index (25ºC) 1.485
Density, g/cm3 (25ºC) 1.09
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 81D 82D 90D 81D 83D 65A
Elastic Modulus (GPa [ksi]) 1,310.0 [190] 1,723.7 [250] 2,137.4 [310] 1,172.1 [170] 1,241.1 [180] 689.5 [100]
Elongation (%) 50 11.3 2.7 11.8 7.3 80
MEK Double Rubs (#) 32 14 >200 34 128 6
Tensile Strength (MPa [psi]) 23.4 [3400] 30.3 [4400] 46.9 [6800] 28.3 [4100] 37.2 [5400] 16.5 [2400]
Water Absorption (%) 24hrs 0.18 0.14 0.28 0.33 0.26 1.67
Viscosity (cP) 5,500 @ 25ºC 900 @ 25ºC 4,000 @ 25ºC 900 @ 25ºC 400 @ 25ºC 1,800 @ 25ºC

Features

  • Provides abrasion resistance
  • Imparts toughness
  • Good dimensional stability
  • Glossy finish
  • Optically clear and non-yellowing
  • Low water absorption
  • Excellent plastic adhesion
  • Excellent hydrophobicity

Applications

  • Tough 3D printing resin
  • Moisture-sensitive coatings and adhesives
  • Impact-resistant coatings for plastics
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