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Product Code B1941-50g
Price $70 ex. VAT

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A phenyl ether diamine building block

Normally as a monomer for the preparation of polyimides in application of batteries, fuel cells, low dielectric materials and OLEDs


2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP) is a diamino monomer with a diphenoxy-phenyl core. Owing to the amines on both ends of the molecule, 2,2-bis[4-(4-aminophenoxy)phenyl]propane is desired for the crosslinking polymerisation with carboxylic acid or carboxylic dianhydride building blocks to synthesise polyimides. The polyimide synthesized from this monomer has low dielectric constant and low dielectric loss, making it an ideal candidate for communication application such as high frequency (10 GHz) 5G communication substrates. With low methanol permeability, the derived polyimide is used as membranes in direct methanol fuel cells. This type of polyimide also exhibits excellent cryogenic mechanical properties and fire resistance.

Other than polyimide, BAPP reacts with dialdehydes building blocks to synthesise polyimines with blue photoluminescence emission for OLEDs applications.

General Information

CAS Number 13080-86-9
Chemical Formula C27H26N2O2
Full Name 2,2-Bis[4-(4-aminophenoxy)phenyl]propane
Molecular Weight 410.52 g/mol
Synonyms 4,4'-((Propane-2,2-diylbis(4,1-phenylene))bis(oxy))dianiline
4-[4-[2-[4-(4-aminophenoxy)phenyl]propan-2-yl]phenoxy]aniline
4,4'-(4,4'-Isopropylidenediphenyl-1,1'-diyldioxy)dianiline
Classification / Family Phenyl ether derivatives, Diamine building blocks, Polyimides, OFETs, Batteries

Chemical Structure

2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP) chemical structure, CAS 13080-86-9
2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP) chemical structure, CAS 13080-86-9

Product Details

Purity >99%
Melting Point Tm = 136 °C – 128 °C
Appearance White to off-white powder

MSDS Documentation

2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP)2,2-Bis[4-(4-aminophenoxy)phenyl]propane (BAPP) MSDS Sheet

Literature and Reviews

  1. Characterization and optical properties of oligoazomethines with triphenylamine moieties exhibiting blue, blue-green and green light, D. Sek et al., Spectrochim. Acta A, 72, 1-10(2009); DOI: 10.1016/j.saa.2008.12.030.
  2. Physical and thermal properties of poly(ethylene terephthalate) fabric coated with electrospun polyimide fibers, I. Butnaru et al., High Perform. Polym., 27(5), 616-624(2015); DOI: 10.1177/0954008315584178.
  3. Polyimide/crown ether composite film with low dielectric constant and low dielectric loss for high signal transmission, H. Li et al., RSC Adv., 13, 7585–7596(2023); DOI: 10.1039/d2ra07043j.
  4. Proton-conducting membranes from phosphotungstic acid-doped sulfonated polyimide for direct methanol fuel cell applications, F. Alcaide et al., Polym. Bull., 62, 813–818(2009); DOI: 10.1007/s00289-009-0061-z.
  5. Reactive phosphaphenanthrene aromatic ether diamine endowing epoxy resin with excellent fire resistance, liquid oxygen compatibility and cryogenic mechanical properties, N. Liu et al., React. Funct. Polym., 183, 10500(2023); DOI: 10.1016/j.reactfunctpolym.2023.105500.
  6. Study on preparation and properties of polyimide lithium battery separator, H. Xu et al., IOP Conf. Ser.: Mater. Sci. Eng., 493 012080(2019); DOI: 10.1088/1757-899X/493/1/012080.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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