3,3,4,4-Diphenylsulfonetetracarboxylic dianhydride
CAS 2540-99-0
CAS · 2540-99-0
Product Overview
3,3,4,4-Diphenylsulfonetetracarboxylic dianhydride is a high-purity pharmaceutical-intermediates supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Appearance: | Off-white to white solid |
|---|---|
| Purity (HPLC): | 99% min |
| Metal Testing: | 1 ppm Max. for one single metal |
Applications
1. Polyimide Synthesis
3,3,4,4-Diphenylsulfonetetracarboxylic dianhydride丨2540-99-0 is widely used as a monomer in the production of aromatic polyimides, which are known for their outstanding performance under extreme conditions.
● Thermally Stable Polymers: DSDA introduces sulfone groups into the polymer backbone, enhancing thermal resistance and oxidative stability.
● High-Temperature Applications: Polyimides based on DSDA are used in aerospace, electronics, and automotive industries where materials are required to withstand temperatures >300°C.
● Flexible Films and Coatings: The resulting polyimides are useful in manufacturing flexible circuit substrates, insulating films, and protective coatings.
2. Electronic and Microelectronic Industry
Polyimides derived from DSDA are essential in microelectronics due to their dielectric properties, mechanical strength, and processability.
● Flexible Printed Circuits (FPCs): These polyimides serve as substrates due to their durability and heat resistance.
● Semiconductor Packaging: Used in chip passivation layers, interlayer dielectrics, and buffer coatings.
● Display Technologies: Employed in liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs) as alignment layers and encapsulants.
3. Aerospace and Defense Applications
● High-Performance Composites: DSDA-based polyimides are integrated into composites for structural parts in aircraft and spacecraft due to their lightweight, flame-retardant, and high-strength nature.
● Insulation Materials: Useful in insulation wraps for wires and components exposed to harsh aerospace environments.
4. Membrane and Separation Technologies
Polyimides containing DSDA are used in gas separation membranes, especially for CO₂/CH₄ and O₂/N₂ separations.
● Gas Permeability and Selectivity: The rigid structure introduced by the sulfone groups and aromatic rings offers favorable transport properties.
● Chemical Resistance: Excellent chemical stability allows use in aggressive processing environments like natural gas treatment and hydrogen recovery.
5. Specialty Coatings and Adhesives
DSDA is used to produce polyimide resins with high bond strength, thermal stability, and resistance to solvents and radiation.
● Protective Coatings: For surfaces exposed to high temperatures or UV radiation.
● Advanced Adhesives: Used in bonding of metals, ceramics, and composites in electronics or aerospace assemblies.
Benefits
1. Exceptional Thermal and Oxidative Stability
● The sulfone (-SO₂-) linkage imparts high thermal stability and resistance to oxidation, allowing materials made with DSDA to retain their properties at extreme temperatures and in oxygen-rich environments.
2. Enhanced Mechanical and Chemical Properties
● Polyimides made from DSDA offer outstanding mechanical strength, dimensional stability, and chemical resistance, making them suitable for demanding industrial applications.
3. Electrical Insulation Performance
● DSDA-based polyimides have low dielectric constants and excellent insulation capabilities, which are critical for high-frequency electronic and RF/microwave devices.
4. Structural Rigidity with Solubility Balance
● While DSDA adds rigidity to the polymer chain for strength, it also provides enough polar functionality to maintain some solubility in organic solvents, allowing for easier processing and film formation.
5. Flame Retardancy
● The sulfone group contributes to intrinsic flame resistance, an essential property for materials used in aviation, aerospace, and public infrastructure.
Conclusion
3,3,4,4-Diphenylsulfonetetracarboxylic dianhydride丨2540-99-0 is a highly specialized dianhydride monomer used primarily in the synthesis of high-performance polyimides. Its incorporation into polymer backbones enables a combination of thermal stability, mechanical strength, electrical insulation, and chemical resistance that few other materials can match. DSDA continues to be a key building block for materials used in electronics, aerospace, advanced coatings, and membrane technologies, making it indispensable in industries where reliability under extreme conditions is non-negotiable.
Previous
Salicylaldehyde Azine丨CAS 959-36-4
Next
Conclusion
A concise summary and suitability assessment for this product is available on request. Contact our team to discuss whether it fits your process and quality requirements.