102729-29-3

Basic information

• Product Name: C₂₁H₂₀N₂O₅
• CAS NO: 102729-29-3
• Molecular Weight: 380.4
• Mol File: 102729-29-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₂₁H₂₀N₂O₅(CAS DataBase Reference)
• NIST Chemistry Reference: C₂₁H₂₀N₂O₅(102729-29-3)
• EPA Substance Registry System: C₂₁H₂₀N₂O₅(102729-29-3)

Safety Data

• Hazardous Substances Data: 102729-29-3(Hazardous Substances Data)

Upstream product

• 868-77-9 2-methyl-2-propenoic acid 2-hydroxyethyl ester 
• 101-68-8 di(4-isocyanatophenyl)methane 

Relevant articles and documents

Ultralow percolation graphene/polyurethane acrylate nanocomposites

Polyurethane acrylate (PUA) are widely used as coating for automobile industry. Making these coatings electrically conductive would open up new applications. Using thermally reduced graphene (TRG) and in-situ polymerization we have created PUA nanocomposites with an ultralow percolation concentration of 0.15 wt% (0.07 vol%) graphene. Urethane-acrylate oligomer (UAO) was synthesized and diluted by tripropyleneglycol diacrylate (TPGDA) to form flowable UAO/TPGDA mixture (UA). TRG was solvent-blended in UA to form uncured TRG/UA liquids and were polymerized by free radical polymerization with azobisisobutyronitrile (AIBN) initiator. Percolation concentrations of polymerized TRG/PUA nanocomposites occurred at 0.15 wt% (0.07 vol%), as determined by surface resistance measurements, bulk electrical conductivity, and modulus. TEM images revealed a homogeneous dispersion of TRG in PUA. Differential scanning calorimetry (DSC) was used to monitor the polymerization of TRG/UA uncured liquids and thermal properties of polymerized TRG/PUA nanocomposites. Polymerization heat, glass transition temperature, and polymerization temperature are independent of TRG loading, though polymerization temperature is ～10 °C lower in the absence of TRG.