135876-30-1

Product Details:

CasNo： 135876-30-1

Molecular Formula： C29H14O6

Appearance： White to off-white crystalline powder

Packing： Aluminium bag

Throughput： 10000KG/Month

Purity： 99%

9,9-Bis(3,4-dicarboxyphenyl)fluorene dianhydride (abbreviated as BPAF), as a core monomer of aromatic dianhydrides containing a fluorene structure, its unique rigid fluorene ring can endow polymers with excellent thermal stability, optical properties, and special mechanical characteristics. Its core applications focus on the preparation of high-performance polyimide materials and multiple high-end fields such as electronics, energy, and separation. The specific applications are as follows:

1. Preparation of High-End Polyimide Films

It is a key dianhydride monomer for synthesizing polyimides. The polyimide films formed by polymerization with diamines exhibit significant advantages. On one hand, the large-volume side groups of the fluorene ring can increase the distance between molecular chains and reduce intermolecular forces, which not only improves the material's solubility in organic solvents but also lowers its dielectric constant. This meets the requirements for processability and insulation of materials in the microelectronics field, and can be used in flexible circuit boards, display touch panels, and substrates of electronic devices such as mobile phones and computers. On the other hand, the synthesized colorless and transparent polyimide films can also be applied in high-tech scenarios such as space telescopes, OLED displays, liquid crystal alignment films, and flexible solar cell substrates.

2. Manufacturing of High-Performance Separation Membranes

As an aromatic dianhydride monomer containing fluorene, this compound can effectively improve the selectivity and permeability of membrane materials when used to prepare polyimide separation membranes, solving the problem that traditional separation membranes are difficult to balance permeability coefficient and selectivity coefficient. Such polyimide separation membranes can be widely used in the production of separation membranes for separating multi-component liquids and gases, adapting to the separation and purification scenarios of various mixtures in industrial production.

3. Synthesis of Special Adhesives for Lithium-Ion Batteries

It can undergo polycondensation reactions with hydroxyl-containing diamines in polar aprotic solvents under the protection of an inert atmosphere to prepare adhesives for lithium-ion secondary batteries. Such adhesives have high bonding strength, which can meet the fixing requirements of internal electrode materials in lithium-ion batteries, help improve battery structural stability and cycle performance, and provide guarantee for the reliable operation of batteries.

4. R&D of Electronic and Optoelectronic Materials

The special conjugated system and rigid skeleton in its molecular structure make it suitable for the synthesis of organic semiconductor materials, liquid crystal display materials, and optoelectronic materials. These materials can be further used in the manufacture of optoelectronic devices, optical fiber communication devices, etc., and can also meet the requirements for high-performance electronic materials in the fields of large-scale integrated circuits and chip manufacturing, helping to upgrade the performance of related electronic devices.

5. Serving as a Key Reagent in Scientific Research and International Trade Fields

In the field of scientific research, this compound is an important reagent for developing new polymer materials. It can be used to verify data models related to polymer polymerization reactions and provide a material basis for exploring new properties and reaction mechanisms of fluorene-containing polymers. In addition, it is available in stock for international trade export, meeting the needs of the international market in fields such as chemical intermediates and material R&D.

6. Preparation of Special Coatings and Dyes

As a chemical intermediate, it can be used to synthesize high-performance coatings and dyes. Relying on the good thermal stability and chemical resistance of the polymers synthesized from it, the corresponding coatings can be used in special scenarios requiring high temperature resistance and corrosion resistance, such as the surface protection of high-end equipment components. The dyes synthesized according to its structural characteristics can also play a role in the field of special coloring.