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4,4'-(4,4'-Isopropylidenediphenoxy)diphthalic Anhydride (BPADA) is a diphthalic anhydride structural unit with a core of bisphenol A. BPADA is a precursor for the synthesis of polyimides, which are highly thermally stable and have strong mechanical properties using their bisphenol A core. Synonyms: ULTEM DIANHYDRIDE;4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE);4,4'-BISPHENOL A DIANHYDRIDE;5,5’-[(1-methylethylidene)bis(4,1-phenyleneoxy)]bis-3-isobenzofurandione;4,4'-(4,4'-isopropylidenediphenoxy)bis-(phthalic;BPADA; MF: C31H20O8 MW: 520.49 EINECS: 253-781-7 Product Categories: strong recommend;Anhydride Monomers;Monomers;Polymer Science
| Melting point | 184-187 °C(lit.) |
| Boiling point | 712.3±60.0 °C(Predicted) |
| density | 1.406±0.06 g/cm3(Predicted) |
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Inert atmosphere,Room Temperature |
| form | powder to crystal |
| color | White to Light yellow |
| Sensitive | Moisture Sensitive |
4,4'-(4,4'-Isopropylidenediphenoxy)bis(phthalic anhydride) be used for the preparation of a polyimide material. Polyimide films synthesised from this molecule are incompletely conjugated and therefore have high optical transparency. With their isometric stretchability and high glass transition temperature (Tg = 207 °C), these films are ideal for flexible display substrates. In addition to their high heat resistance, the polyimides are chemically inert and can be used as ion transport membranes in fuel cells.BPADA can also be used to make aerogels that are superhydrophobic (Lotus effect).
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