April 23, 2012

Bayer MaterialScience
Announcement of the new Senior Country Representative and President

Tokyo, April 23, 2012- Bayer MaterialScience Ltd. (Headquarters: Chiyoda-ku, Tokyo) announces that Mr. Kimiyasu Yonemaru will be appointed as Senior Country Representative for Bayer MaterialScience in Japan and President of Bayer MaterialScience Ltd., succeeding Mr. Haruo Kuno who will assume responsibility as an Advisor effective May 1st, 2012.
Mr. Yonemaru will take over the position in addition to his current role as President of Sumika Bayer Urethane Co., Ltd.

Kimiyasu Yonemaru

Mr. Kimiyasu Yonemaru was born in Kagoshima Prefecture on March 1st, 1958. After graduating from Ritsumeikan University, Mr. Yonemaru joined Sumitomo Bayer Urethane Co, Ltd. (now Sumika Bayer Urethane Co., Ltd.) in 1984, starting his career with the Sales Division. In 1993, he was assigned to Bayer Corporation in Pittsburgh, USA, responsible for Marketing of the Japanese automotive industry. After returning to Japan, he was appointed in 2003 as Head of the Marketing Unit Specialties for Japan and Korea of the Polyurethane Business Unit. In 2006, he was promoted to Regional Marketing Director, Polyurethanes, APAC based in Hong Kong. Mr. Yonemaru became President of Sumika Bayer Urethane Ltd. in September 2007.

About Bayer MaterialScience:
With 2011 sales of EUR 10.8 billion, Bayer MaterialScience is among the world's largest polymer companies. 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 and the sports and leisure industries. At the end of 2011, Bayer MaterialScience had 30 production sites and employed approximately 14,800 people around the globe. Bayer MaterialScience is a Bayer Group company.

Forward-Looking Statements
This release may contain forward-looking statements based on current assumptions and forecasts made by Bayer Group or subgroup 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 Bayer's public reports which are available on the Bayer website at www.bayer.com. The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.

Bayer MaterialScience Ltd.
Tokyo, April 23, 2012