[Proetus]

DuPont and BP Announce Partnership to Develop Advanced Biofuels

June 20, 2006 - DuPont and BP today announced the creation of a partnership to develop, produce and market a next generation of biofuels to help meet increasing global demand for renewable transportation fuels.

The first product to market will be biobutanol, which is targeted for introduction in 2007 in the United Kingdom as a gasoline bio-component. DuPont and BP are working with British Sugar, a subsidiary of Associated British Foods plc, to convert the country's first ethanol fermentation facility to produce biobutanol. Additional global capacity will be introduced as market conditions dictate. A feasibility study in conjunction with British Sugar is already under way to examine the possibility of constructing larger facilities in the UK.

Biobutanol has low vapor pressure and tolerance to water contamination in gasoline blends, facilitating its use in existing gasoline supply and distribution channels. It has the potential to be blended into gasoline at higher concentrations than existing biofuels without the need to retrofit vehicles and it offers better fuel economy than gasoline-ethanol blends, improving a car's fuel efficiency and mileage.