Bomar Oligomer Product
UV/EB Oligomer

BR-543

BR-543: Difunctional Aliphatic Polyether Urethane Acrylate Oligomer

BR-543 is a difunctional, aliphatic, polyether urethane acrylate. Films formulated with BR-543 exhibit superior physical and weathering capabilities. BR-543 may also be used to improve the flexibility, weathering, and adhesion characteristics of existing film and foil coatings.

Neat Properties
Property Value
Viscosity cP (60ºC) 13,000
Pt-Co (APHA) Color 20
Refractive Index (25ºC) 1.477
Density, g/cm3 (25ºC) 1.03
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 56A 74A 63D 43D 54D 42A
Elastic Modulus (GPa [ksi]) 8.3 [1.2] 66.9 [9.7] 689.5 [100] 241.3 [35] 344.7 [50] 12.4 [1.8]
Elongation (%) 85 130 4.1 10.9 10.8 95
MEK Double Rubs (#) 6 3 46 16 15 10
Tensile Strength (MPa [psi]) 3.3 [480] 9.0 [1300] 20.0 [2900] 11.0 [1600] 16.5 [2400] 3.1 [450]
Water Absorption (%) 24hrs 0.86 0.55 1.31 1.23 1.00 4.68
Viscosity (cP) 14,000 @ 25ºC 2,500 @ 25ºC 17,000 @ 25ºC 5,300 @ 25ºC 2,800 @ 25ºC 7,900 @ 25ºC

Features

  • Enhances flexibility
  • Abrasion-resistant
  • Exhibits hydrolytic stability
  • Provides oil and chemical resistance
  • High clarity
  • High tensile strength
  • Provides excellent weatherability

Applications

  • Foil coatings
  • Optical coatings on polycarbonate
  • Weather-resistant coatings
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