March 2008

Bayer’s patented IMPACT technology has proven to be an advantageous and efficient method for producing polyether polyols not previously accessible with conventional processes. This innovative polyalkoxylation technology is based on a double metal cyanide (DMC) catalyst and can be used to produce high molecular weight polyols with improved product consistency and increased production yields. In partnership with Bayer Technology Services GmbH, the Polyurethanes Business Unit of Bayer MaterialScience has constructed a new reactor with improved technology that significantly increases the Acclaim® polyether polyols production capacities to meet customer demand in this rapidly growing market. “In addition to increasing our capacities, these developments also enable us to reduce process waste and improve plant productivity, thus leading to enhanced production efficiency. They are another example of our company’s commitment to innovation,” says Demetri Zervoudis, Head of Production and Technology Polyether Polyols/Propylene Oxide for the Polyurethanes Business Unit of Bayer MaterialScience.

The high-molecular weight Acclaim® polyols are marketed by the Coatings, Adhesives, Sealants Business Unit of Bayer MaterialScience as raw materials for high-end applications in the adhesives and sealants industry. The silane-terminated polyurethane prepolymers (STPs) of the Desmoseal® S product range, for example, have been used successfully for many years in the area of elastic bonding and sealing in vehicle manufacture and shipbuilding, various applications in the construction industry, air conditioning and ventilation technology and the laying of floor coverings. They adhere reliably to many substrates, even without adhesive primers, have a long service life and, unlike silicon sealants, exhibit excellent compatibility with coating materials. “The polyurethane backbone enables the production of adhesives and sealants with both high strength and high elasticity. These are extremely stable in storage and crosslink without the need for latent hardeners even in difficult climatic conditions, leaving no air bubbles,” explains Dr. Mathias Matner, an expert in polyurethane adhesives and sealants in the Coatings, Adhesives, Sealants Business Unit.

About Bayer MaterialScience:
With 2007 sales of EUR 10.4 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 sports and leisure industries. Bayer MaterialScience has 30 production sites around the globe and employed approximately 15,400 people at the end of 2007. Bayer MaterialScience is a Bayer Group company.

For more information visit http://www.bayermaterialscience.com.