BaySystems™ Introduces Spray Foam Book Resource Guide for Building and Contracting Industry

Las Vegas, May 13, 2009 — To better support builders and contractors, BaySystems™ is introducing the Foam Book, an educational guide that features information about the many advantages of polyurethane spray foam products for wall insulation and roofing applications. The theme is “Sustain Your Business Through Knowledge.” BaySystems™ is the umbrella brand for the global polyurethane systems operations of Bayer MaterialScience.

“We designed and produced the Foam Book with our customers’ needs in mind,” said Charles Valentine, director of sales and marketing for BaySystems™. “We used our expertise in this industry to assemble a broad range of information that was previously difficult to find in a convenient, educational guide.”

The comprehensive Foam Book features information about the benefits of polyurethane spray foam wall and roof insulation, including the product’s ability to eliminate air leaks, provide moisture and wind resistance, reduce sound transmission and contribute to a healthier structure. For example, using polyurethane spray foam instead of traditional fiberglass batt insulation can help increase a home’s energy efficiency by blocking all six heat transfer methods that cause heat loss. This attribute is particularly noteworthy as energy efficiency becomes a stronger selling point for home builders.

Anyone can obtain a free copy of the Foam Book through their BaySystems™ sales representatives. In addition, customers visiting the Bayer MaterialScience booth (#C4031) at the International Builders’ Show, January 20-23 in Las Vegas, can pick up a CD that contains a downloadable version of the book.

Effective March 1, 2007, Bayer MaterialScience has combined its entire global polyurethane systems business under the umbrella brand of BaySystems™. This change affects not only existing product brands in this segment, but also the global network of polyurethane systems houses. More information about BaySystems™ can be found at www.bayer-baysystems.com.

Bayer MaterialScience LLC is one of the leading producers of polymers and high-performance plastics in North America and is part of the global Bayer MaterialScience business with nearly 15,400 employees at 30 sites around the world and 2007 sales of 10.4 billion euros. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, electrical and electronics, construction, medical, and sports and leisure industries. Our inorganic basic chemicals unit produces chlorine and related essential products for the chemicals industry.

Bayer Corporation, headquartered in Pittsburgh, is a subsidiary of Bayer AG, an international health care, nutrition and high-tech materials group based in Leverkusen, Germany. In North America, Bayer had 2007 net sales of 8.1 billion euros and employed 16,800 at year end. Bayer’s three subgroups, Bayer HealthCare, Bayer CropScience and Bayer MaterialScience, improve people’s lives through a broad range of essential products that help diagnose, prevent and treat diseases; protect crops and enhance yields; and advance automobile safety and durability.

To get a copy of the Foam Book, visit www.BaySystemsSpray.com

Contact:
Karie Lee, Phone: 602-443-7244
E-mail: karie.lee@bayerbms.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.