News Release

Bayer MaterialScience introduces fire resistant Baytec ® SPR 185A FR thick film coating system for industrial roofing applications

Spray System meets UL790 standards for fire resistance of roof covering materials

PITTSBURGH, October 29, 2007 — Bayer MaterialScience (BMS) LLC has expanded its portfolio of thick film coating systems with the introduction of Baytec® SPR 185A FR (fire resistant) thick film coating system. BMS also announces that the spray system, formulated specifically to protect metal or concrete industrial roof systems, has passed Underwriters Laboratories Inc.'s UL790 test for fire resistance of roof covering materials.

Underwriters Laboratories works with the roofing industry to develop standards that evaluate and measure distinct characteristics regarding the performance of roofing materials and systems with respect to fire safety and property protection. The UL790 fire resistance rating is highly desirable in industrial applications, as it can result in lower insurance premiums for building owners.

“As the world's largest producer of polyurethane specialty chemicals, Bayer continues to be a leading innovator in thick film coating systems with the introduction of the Baytec SPR 185A FR fire resistant spray system,” said Dr. Michael Hurley, senior scientist. “In addition to its flame resistance properties, the Baytec spray system also limits costly roof corrosion as well as water damage to internal structures, thereby increasing the service life of the overall structure.”

The Baytec SPR 185A FR system is spray applied, making application quick and easy and eliminating the costly, labor-intensive and time-consuming application process of rolled sheet. The spray system combines durability, flexibility and rapid cure to create a monolithic seamless roof coating that provides exceptional protection against leaks, weathering and foot traffic.

Furthermore, the spray system offers excellent resistance to ozone, hydrolysis and many chemicals, and even passes the Ponding Water Test where other roof coatings fail. Baytec 185A FR thick film coating provides a seamless, homogeneous seal over joints and fasteners – even around roof kneewalls and roof protrusions such as vent pipes and HVAC systems.

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 14,900 employees at 30 sites around the world and 2006 sales of 10.2 billion euros from continuing operations. Our innovative developments in coatings, Adhesive and Specialty raw materials, polycarbonates, polyurethanes and thermoplastic urethane elastomers enhance the design and functionality of products in a wide variety of markets, including the automotive, construction, electrical and electronics, household and medical industries, and the sports and leisure fields. Our inorganic basic chemicals unit produces chlorine and related essential products for the chemicals industry. Let us give life to your vision. Bayer MaterialScience – Where VisionWorks.

Bayer Corporation, headquartered in Pittsburgh , is a subsidiary of Bayer AG, an international health care, nutrition and innovative materials group based in Leverkusen , Germany . In North America , Bayer had 2006 net sales of 7.8 billion euros and employed 17,200 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 prevent and treat diseases; protect crops and enhance yields; and advance automobile safety and durability.

Contact:

Jeremy Small , Phone: 412-777-2951

E-mail: jeremy.small@bayerbms.com

For more information about Bayer MaterialScience , call 1-800-662-2927, e-mail naftainfo@bayerbms.com or visit www.bayermaterialscienceNAFTA.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.