What are the uses of 4,4'-Oxydiphthalic anhydride?

4,4'-Oxydiphthalic anhydride(ODPA) is primarily used as a key building block for high-performance polymers, particularly in the production of polyimide (PI).

Polyimide materials made from ODPA are widely used in many high-tech and industrial fields due to their excellent thermal stability, mechanical strength, and electrical insulation properties.

Electronics: This is one of ODPA's most important applications. It is used to manufacture substrates for flexible printed circuits (FPCs), chip packaging, passivation layers, and insulation for wires and cables. For example, the flexible screens and circuits in our mobile phones rely heavily on these high-performance materials.

Aerospace: Due to their lightweight and excellent resistance to high temperatures and corrosion, these materials are used in aircraft structural components, engine component coatings, and various composite materials.

Separation membrane technology: The unique porous structure of polyimide membranes made from ODPA makes them suitable for gas separation (for example, separating nitrogen from air), water treatment, and pervaporation processes.

Other industrial applications: ODPA is also used to manufacture high-temperature-resistant adhesives, coatings, and mechanical parts that must withstand harsh environments.

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