Bomar Oligomer Product
UV/EB Oligomer

BR-3747AE

BR-3747AE: Difunctional Aliphatic Polyether Urethane Acrylate Oligomer

BR-3747AE is a difunctional, flexible, aliphatic polyether urethane acrylate. In addition to our typical substrates, BR-3747AE provides adhesion to a variety of unusual substrates: polypropylene, high-density polyethylene (HDPE), and poly(vinyl chloride) (PVC). This unique product adheres well to a variety of metals, glass, and plastics. It is also an excellent candidate for consideration in UV light-curable PSA as a co-oligomer.

Neat Properties
Property Value
Viscosity cP (60ºC) 10,000
Pt-Co (APHA) Color 50
Refractive Index (25ºC) 1.46
Density, g/cm3 (25ºC) 1.10
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 40A 72A 40D
Elastic Modulus (GPa [ksi]) 0.3 [0.04] 1.2 [0.17] 24.1 [3.5]
Elongation (%) 400 300 25
MEK Double Rubs (#)
Tensile Strength (MPa [psi]) 1.3 [185] 5.5 [800] 4.1 [600]
Water Absorption (%) 24hrs
Viscosity (cP) 12,000 @ 25ºC 2,300 @ 25ºC — @ 25ºC 2,500 @ 25ºC — @ 25ºC — @ 25ºC

Features

  • Enhances flexibility
  • Non-yellowing
  • Improves adhesion
  • Provides toughness
  • Adheres to a wide range of substrates

Applications

  • Oligomer for adhesion promotion
  • UV pressure-sensitive adhesives (PSA)
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