Bomar Oligomer Product
UV/EB Oligomer

BR-7432GB

BR-7432GB: Difunctional Aliphatic Polyester Urethane Methacrylate Oligomer

BR-7432GB, an aliphatic polyester urethane diacrylate, formulates into applications requiring adhesion to various substrates and applications such as thermoforming resistant coatings where toughness and flexibility are required. BR-7432GB provides excellent balance of weathering, solvent resistance, tensile strength, and adhesion properties. BR-7432GB is an incredibly tough, elastomeric material with similar mechanical performance to cast urethanes, and can provide excellent impact resistance and weatherability to formulations. BR7432GB also has low MeHQ for nail gel polish applications.

Neat Properties
Property Value
Viscosity cP (60ºC) 88,000
Pt-Co (APHA) Color 15
Refractive Index (25ºC) 1.549
Density, g/cm3 (25ºC) 1.16
Monomer Dilution Properties
Value
Property I30 I50 TM50 TP50 H50 HE30
Durometer Hardness 65A 43D 78D 56D 63D 57A
Elastic Modulus (GPa [ksi]) 22.1 [3.2] 56.5 [8.2] 758.4 [110] 172.4 [25] 310.3 [45] 9.0 [1.3]
Elongation (%) 190 190 4.0 19.0 9.0 230
MEK Double Rubs (#) 180 17 >200 143 140 40
Tensile Strength (MPa [psi]) 9.7 [1400] 16.5 [2400] 22.8 [3300] 9.7 [1400] 13.1 [1900] 2.8 [400]
Water Absorption (%) 24hrs 1.04 0.62 0.84 1.01 0.75 3.38
Viscosity (cP) 65,000 @ 25ºC 6,900 @ 25ºC 22,000 @ 25ºC 6,700 @ 25ºC 2,800 @ 25ºC 11,000 @ 25ºC

Features

  • Imparts toughness and impact resistance
  • Low Tg
  • Excellent adhesion to a variety of substrates
  • Excellent cure response in LED conditions
  • Adheres to polymer films
  • Elastomeric
  • Provides abrasion resistance
  • Excellent weatherability

Applications

  • Impact-resistant coatings
  • Thermoforming coatings and inks
  • Nail gel coatings
  • High impact 3D printing resins
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