9,9-Bis(3,4-dicarboxyphenyl)fluorene Dianhydride NEW

9,9-Bis(3,4-dicarboxyphenyl)fluorene Dianhydride   135876-30-1

Synonyms:BPAF;BFDCA

Appearance:white powder 

Purity:99.5%min 

Physical and Chemical Properties

• Molecular formula: C₂₉H₁₆O₇

• Molecular weight: 476.43 g/mol

• Melting point: >300 °C

• Solubility: Soluble in high-boiling polar aprotic solvents such as DMF, DMAc, NMP; insoluble in water

• Stability: Stable under normal storage conditions, hygroscopic

• Characteristic: High thermal stability, low dielectric constant, excellent solubility, low CTE

Applications

• Key aromatic dianhydride monomer for high-performance polyimides

• Used in the preparation of colorless, transparent polyimide films for flexible displays, OLED, and optoelectronic devices

• Applied in high-temperature resistant coatings, semiconductor passivation layers, and microelectronic packaging materials

• Used in aerospace composites, high-temperature adhesives, and low-dielectric materials for 5G communications

• Raw material for fluorene-containing polyimide resins and high-temperature polymer materials

• HS Code: 2917399090