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Covestro has started up a pilot plant at its site in Leverkusen, Germany, for making biobased aniline. Aniline is a precursor to the polyurethane raw material methylene diphenyl diisocyanate. The new plant uses a microorganism to transform sugar into an intermediate that is then converted into aniline through a catalytic step. Conventionally, aniline is made from the petrochemical nitrobenzene.
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