44oxydianiline

4,4'-Oxydianiline is an organic diamine used in polymer chemistry. Its molecular formula is C12H12N2O, and it comprises two para-aminophenyl rings connected by an ether (diphenyl ether) linkage. The structure places amino groups at the 4 positions on each phenyl ring, giving the compound distinctive reactivity as a diamine monomer.

In industry, 4,4'-oxydianiline serves as a key monomer for the synthesis of polyimides through polycondensation with aromatic dianhydrides. Polymers derived from this diamine, such as those formed with 2,2-bis(phenyl)hexafluoropropane dianhydride or BPDA, exhibit high thermal stability, mechanical strength, and good chemical resistance, making them suitable for electronics, aerospace, and optoelectronic applications. The diamine is also used as a curing agent or co-curing component for epoxy resins, contributing to enhanced heat resistance and network stability. In addition, it is employed in the production of polyetherimide resins, notably in formulations related to Ultem-type materials, where it is reacted with dianhydrides to yield rigid, high-temperature polymers.

Safety and handling information indicate that 4,4'-oxydianiline can be irritating to the skin, eyes, and respiratory tract. Occupational exposure should be minimized, and handling should occur with appropriate personal protective equipment in a well-ventilated area. The material should be stored in a cool, dry place away from oxidizers and incompatible substances, following applicable safety regulations.