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What is DPA and Aniline Production Process about?

This patent describes a process for producing variable amounts of diphenylamine (DPA) and aniline using only phenol and ammonia as feedstocks. The process involves catalytically reacting phenol and ammonia to produce aniline in situ, and then reacting the aniline with phenol to produce DPA. By varying the ratios of phenol and ammonia fed into the process and the amounts recycled, the process can produce any ratio of DPA to aniline from only a phenol-ammonia feedstock using a single reactor.

Author

Refi Rahman

Language

EN