Japanese chemical producer Zeon and California-based bio-manufacturing firm Visolis have signed a binding term sheet for their planned sustainable aviation fuel (SAF) and bio-isoprene monomer production project.
The companies signed the term sheet on 1 January as they move toward commercialising biomass-derived isoprene monomer and SAF production, Zeon announced on 16 February.
Zeon and Visolis aim to make a final investment decision (FID) on plant construction in the first half of 2027, a Zeon representative told Argus. Following the FID, they expect to build a pilot plant first and later scale up to commercial production, although the detailed timeline has yet to be determined.
Visolis' technology uses fermentation to convert biomass-derived feedstock such as sugarcane and corn into intermediate products. The intermediates can be used to produce bio-isoprene monomers and SAF, Zeon said.
Zeon invested in Visolis in December 2022 through its California-based subsidiary Zeon Ventures. The companies signed an initial agreement in March 2024 and conducted a feasibility study, which confirmed the competitiveness of Visolis' technology for commercialisation.
Zeon has been evaluating several possible plant sites in Japan and overseas, although details have not been disclosed. The binding term sheet marks a major milestone toward making an FID and commercialising the project, the company said.

