FOR IMMEDIATE RELEASE
May 23, 2008

Environmentally Friendly Construction Using Energy-saving MAKROLON® Multi-Wall UV Sheet

Sheffield, MA — In recent years, energy-saving MAKROLON® Multi-Wall UV Sheet, a product of Sheffield Plastics Inc., A Bayer MaterialScience Company, has contributed significantly to the reduction of CO2 emissions. Beginning with MAKROLON Multi-Wall UV Sheet’s market introduction in Europe some three years ago, about two million square meters of roofing surfaces have been covered.

When compared to standard products, the use of MAKROLON Multi-Wall UV Sheet since 2003 has reduced European emissions of the greenhouse gas carbon dioxide by roughly 65,000 tons, which corresponds to several million square meters of roofing surface. About half of the current offering of MAKROLON Multi-Wall UV Sheets is less than three years old. This innovation serves the interest of both the market and the customers.

MAKROLON Multi-Wall UV Sheet has become a hit in a very brief time. "Following its market introduction in Europe in mid-2003, close to two million square meters of roofing surface were covered with MAKROLON Multi-Wall UV Sheet. Following a further explosion of energy costs, we had an additional increase in sales in 2007," says Günther Winnerl, Segment Manager Building with Bayer Sheet Europe, Darmstadt, Germany.

Builders, planners, and architects from the private and industrial construction sectors above all appreciate the heat-reduction properties of MAKROLON Multi-Wall UV Sheet, in addition to its low weight and excellent flexibility. In contrast to standard sheets of the same thickness, this product results in energy savings of up to 25 percent. This savings corresponds to roughly five liters of heating oil, or 5.5 cubic meters of heating gas (gaseous) per square meter per annum.

Because of the strong demand for wall sheet products for energy-saving construction, MAKROLON Multi-Wall UV Sheet commands top billing as energy conserver. The uniquely Y-shaped sheets win users over with their thinness and outstanding heat-resistant properties.

The product portfolio is rounded out with the 5X structural sheet in thicknesses of 25mm, 32mm and 40mm available for private construction, as well as translucent, heat-resistant versions of the product family. Compared to commercially available standard sheets, they reduce heat levels in the interiors by up to 50 percent (relative to the total degree of energy penetration), while still maintaining the same level of high exposure to light.

Sheffield Plastics’ MAKROLON Multi-Wall UV Sheet represents a mark of quality for a new generation of high-value quality products that demonstrate innovative and intelligent solutions to meet the highest challenges in construction.

Sheffield Plastics Inc., a Bayer MaterialScience Company, is a global leader in high performance plastics. Sheffield continues its leadership in polycarbonate technology with new processes, product innovations and superior optics. For more information, contact Sheffield Plastics Inc. at 1-800-254-1707; fax 1-800-457-3553; write 119 Salisbury Road, Sheffield, MA 01257; or visit www.sheffieldplastics.com.

This news release contains forward-looking statements based on current assumptions and forecasts made by Bayer Group management. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in our annual and interim reports filed with the Frankfurt Stock Exchange. The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.

Sheffield Plastics, a Bayer MaterialScience Company
119 Salisbury Road
Sheffield, MA 01257
Phone: 800-254-1707
E-Mail: web@SheffieldPlastics.com
Website URL: www.sheffieldplastics.com