Bomar Oligomer Product
UV/EB Oligomer

BR-543MB

BR-543MB: Difunctional Aliphatic Polyether Urethane Methacrylate Oligomer

BR-543MB is a difunctional, aliphatic polyether urethane methacrylate. BR-543MB is an excellent candidate to consider for use in cosmetic applications. As a primary oligomer, BR543MB offers excellent properties of adhesion and optical clarity. As a co-oligomer, BR-543MB can be used to improve an existing formulation’s glass adhesion. This product is listed in the INCI directory to meet cosmetic regulatory guidelines and has low skin sensitivity.

Neat Properties
Property Value
Viscosity cP (60ºC) 14,000
Pt-Co (APHA) Color 20
Refractive Index (25ºC) 1.476
Density, g/cm3 (25ºC) 1.03
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 60A 31D 73D 51D 57D 83A
Elastic Modulus (GPa [ksi]) 7.6 [1.1] 37.9 [5.5] 758.4 [110] 275.8 [40] 379.2 [55] 57.2 [8.3]
Elongation (%) 110 180 3.8 15.3 7.1 130
MEK Double Rubs (#) 5 4 30 6 80 20
Tensile Strength (MPa [psi]) 4.1 [600] 15.2 [2200] 24.8 [3600] 12.4 [1800] 17.2 [2500] 7.6 [1100]
Water Absorption (%) 24hrs 0.85 0.57 1.22 1.17 0.93 3.92
Viscosity (cP) 15,000 @ 25ºC 2,700 @ 25ºC 9,900 @ 25ºC 2,900 @ 25ºC 1,600 @ 25ºC 8,700 @ 25ºC

Features

  • High tensile strength
  • Excellent optical clarity
  • Exhibits hydrolytic stability
  • Oil resistant
  • Improves impact resistance
  • Improves adhesion
  • Provides weatherability
  • Low skin sensitivity

Applications

  • Nail Coatings
  • Optical coatings
  • Adhesion promoting co-oligomer
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