Bomar Oligomer Product
UV/EB Oligomer

BRC-843SD1

BRC-843SD1: Difunctional Hydrophobic Urethane Acrylate

BRC-843SD1 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 a functional, non-yellowing, protective single-coating that extends the substrates use-life. BRC-843SD1 is a softer and more flexible version of BRC-843. This oligomer is also tougher then BRC-843. The low water absorption and alkaline resistance make this oligomer perfect for specialty applications in the following industries: aerospace, appliance, automotive, electronic, and medical device.

Neat Properties
Property Value
Viscosity cP (60ºC) 33,000
Pt-Co (APHA) Color 20
Refractive Index (25ºC)
Density, g/cm3 (25ºC)
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 43D 60D 78D 62D 66D 77A
Elastic Modulus (GPa [ksi]) 48.3 [7.0] 310.3 [45] 1,034.2 [150] 310.3 [45] 482.6 [70] 44.1 [6.4]
Elongation (%) 180 150 3.1 10.8 9.1 130
MEK Double Rubs (#) 66 16 >200 24 45 19
Tensile Strength (MPa [psi]) 8.3 [1200] 13.8 [2000] 22.8 [3300] 11.0 [1600] 19.3 [2800] 7.6 [1100]
Water Absorption (%) 24hrs 0.41 0.32 0.56 0.66 0.51 2.81
Viscosity (cP) 29,000 @ 25ºC 4,200 @ 25ºC 17,000 @ 25ºC 4,200 @ 25ºC 1,900 @ 25ºC 12,000 @ 25ºC

Features

  • Improves adhesion
  • Enhances hardness
  • Non-yellowing and high gloss
  • Low water absorption
  • Exhibits hydrolytic stability
  • Provides excellent chemical and
    temperature resistance
  • Provides alkali resistance

Applications

  • Coatings and inks for steel, plastic, and glass
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