Toray and Colorado-based renewable chemicals company Gevo eye commercial-scale operations for renewable PET following successfully lab-scale production

Liling Tan

ENGLEWOOD, Colorado , July 5, 2011 (press release) – Gevo, Inc. (NASDAQ: GEVO), a leading renewable chemicals and advanced biofuels company, today announced that it has successfully produced fully renewable and recyclable polyethylene terephthalate (PET) with its potential customer, Toray Industries, Inc. (Toray) one of the world's leading producers of fibers, plastics and chemicals. Around 50 million tons of PET are produced annually for conversion into films and bottles for packaging; fibers for non-wovens and textiles; and, resins for automotive applications. In April, 2010, the two companies signed a non-binding letter of interest for the future supply of renewable para-xylene derived from Gevo's isobutanol sometime in 2012 or thereafter.

Working directly with this important potential customer, Gevo employed prototypes of commercial operations from the petrochemical and refining industries to make para-xylene from isobutanol. This renewable para-xylene was sent to Toray for conversion into biobased PET articles. Toray employed its existing technology and new technology jointly developed with Gevo and used Gevo's para-xylene and commercially available renewable mono ethylene glycol (MEG) to produce fully renewable PET (all of the carbon in this PET is renewable).

Gevo is planning to exhibit these biobased PET samples at the upcoming "BioPlastek 2011 Forum," which will be held at The Waldorf-Astoria in New York, New York, on June 27-29, 2011.

"We believe there is strong customer demand for fully renewable, non-petroleum derived PET and we are working to fill that demand as soon as possible. Last month, we disclosed that we had provided renewable para-xylene to international brand owners for evaluation and the production of a fully renewable bottle from PET," said Christopher Ryan, Ph.D., President and COO of Gevo. "We are pleased to have validated this technology with Toray and look forward to building a market for fully renewable PET as soon as possible."

"Companies today are looking for ways to introduce new products and packaging that helps meet the growing consumer demand for environmentally friendly products while at the same time, contributing to the sustainability goals of their companies," said Chiaki Tanaka, Executive Vice President and CTO of Toray. "Our partnership with Gevo and our internal progress to date suggest we are on track to help our customers fulfill these needs."

The next step in this collaboration between Gevo and Toray is to move from lab-scale "proof of concept" to establishing commercial-scale operations. Gevo is currently working with partners to optimize the process technology needed to produce para-xylene from isobutanol at commercial-scale and competitive economics.

About Gevo

Gevo is converting existing ethanol plants into biorefineries to make renewable building block products for the chemical and fuel industries. The Company plans to convert renewable raw materials into isobutanol and renewable hydrocarbons that can be directly integrated on a "drop in" basis into existing chemical and fuel products to deliver environmental and economic benefits. Gevo is committed to a sustainable biobased economy that meets society's needs for plentiful food and clean air and water. For more information, visit http://www.gevo.com

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