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Isoprene Production via Kuraray One-Step Isoprene and Formaldehyde Process

PEP Review 2015-04

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Published May 2015

This review presents a technoeconomic evaluation of the Kuraray one-stage process to produce isoprene. We have based our design upon technical information and data available from patents assigned to Kuraray Company Ltd. of Japan.

The Kuraray two-stage process, which uses isobutylene (IB) and formaldehyde (FA) as a feedstock, is a well-defined commercial route to isoprene. However, by-product polyols influence its process economics. Kuraray’s one-stage process offers several catalyst improvements that enhance isoprene yield and provide favorable process economics. The one-step process does not use C4-derived IB. The feedstock is t-butanol (TBA) along with FA. The main advantages of the one-step process are higher isoprene purity and lower energy consumption.

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