Bis-(3-phthalyl anhydride) ether
[CAS# 1823-59-2]

Identification

• Classification: Chemical reagent >> Organic reagent >> Ether
• Name: Bis-(3-phthalyl anhydride) ether
• Synonyms: 4,4'-Oxydiphthalic anhydride
• Molecular Formula: C₁₆H₆O₇
• Molecular Weight: 310.22
• CAS Registry Number: 1823-59-2
• EC Number: 412-830-4
• SMILES: C1=CC2=C(C=C1OC3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O

Properties

• Melting point: 225-229 °C

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H412
• Safety Statements: P273-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412

Discovery and Applications

Bis-(3-phthalyl anhydride) ether, also known as BPDE , was discovered in the mid-20th century. Researchers were focused on developing advanced chemical compounds with unique structural properties that could be used in high-performance materials. With its molecular formula C16H6O7, BPDE features two benzofuran-1,3-dione groups connected by an ether linkage. This discovery was a significant advancement in polymer chemistry, providing a monomer that contributes to materials with exceptional thermal and chemical stability.

BPDE is a crucial monomer in the synthesis of polyimides. These polymers, known for their outstanding thermal stability, mechanical strength, and chemical resistance, are used in applications where materials must perform reliably under extreme conditions.

The aerospace industry leverages the properties of BPDE-based polyimides for their lightweight, high-strength, and heat-resistant characteristics. These materials are essential in manufacturing components for aircraft, spacecraft, and satellites.

In electronics, BPDE-based polyimides are used as insulating films, flexible circuit substrates, and protective coatings. Their excellent electrical insulation properties and thermal stability make them ideal for high-performance electronic devices, ensuring reliability and longevity even under demanding conditions. They are integral to the production of flexible printed circuit boards (PCBs) and various semiconductor components.

The automotive industry utilizes BPDE-derived polyimides for their superior thermal and chemical resistance. These materials are used in producing gaskets, seals, and insulating components that must endure high temperatures and aggressive chemicals in engine compartments.

BPDE finds applications in various industrial processes where high-performance materials are necessary. This includes coatings for chemical processing equipment, high-strength fibers for industrial textiles, and membranes for gas separation.

References

2023. Synthesis of organosoluble aromatic poly(ether ketone)-polyimide copolymers from 9-(4-aminophenyl)-9-(4-hydroxyphenyl)fluorene. Polymer Bulletin.
DOI: 10.1007/s00289-023-05022-x

2020. Highly Soluble Polyimides Containing Di-tert-butylbenzene and Dimethyl Groups with Good Gas Separation Properties and Optical Transparency. Chinese Journal of Polymer Science.
DOI: 10.1007/s10118-020-2377-y

2020. High-Performance Polyimides with Pendant Fluorenylidene Groups: Synthesis, Characterization and Adsorption Behaviour. Journal of Polymers and the Environment.
DOI: 10.1007/s10924-020-01777-w