Property | Value |
Systematic Name | 2,2-Bis[4-(4-aminophenoxy)phenyl]propane |
Common Name | 4,4'-Isopropylidenebis[(4-aminophenoxy)benzene]; BAPP |
CAS Number | 13080-86-9 |
Molecular Formula | C₂₇H₂₆N₂O₂ |
Molecular Weight | 410.52 g/mol |
Appearance | White to off-white solid / powder |
Melting Point | 127-130 °C (lit.) |
Boiling Point | 587.1 ± 50.0 °C (predicted) |
Density | 1.178 ± 0.06 g/cm³ (predicted) |
Solubility | Very slightly soluble in water; Soluble in acetone, DMSO |
Description of 2,2-Bis[4-(4-aminophenoxy)phenyl]propane
2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP, CAS: 13080-86-9) is a flexible aromatic diamine monomer. As a key building block in polyimide synthesis, BAPP enhances solubility and processability, yielding high-performance polymers with excellent thermal stability, low dielectric constants, and mechanical strength for flexible electronics, aerospace composites, and optical films.
Application of 2,2-Bis[4-(4-aminophenoxy)phenyl]propane
2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP), a flexible aromatic diamine monomer, is primarily used in the synthesis of high-performance polyimides via crosslinking with dianhydrides, yielding polymers with glass transition temperatures of 225-230°C, enhanced solubility, and superior mechanical properties. These polyimides find applications in batteries, fuel cells, low-dielectric insulators for electronics, and OLED substrates, offering thermal stability and processability for flexible displays and aerospace composites. Additionally, BAPP serves in epoxy resin curing for thermoset blends with poly(ε-caprolactone), dental composites, polyurethanes, and polyester materials, improving adhesion and durability in coatings and adhesives.
Storage of 2,2-Bis[4-(4-aminophenoxy)phenyl]propane
It should be kept in a cool, dry, dark place under an inert atmosphere at room temperature or below 15°C to prevent oxidation and moisture absorption. Use airtight containers to maintain purity. Refrigeration at 2-8°C is ideal for long-term stability. Avoid exposure to light, air, or humidity. Handle in a well-ventilated area.