Xetra (euro adhoc) -

  Notification concerning transactions by persons discharging managerial
  responsibilities pursuant to section 15a of the WpHG, transmitted by euro
  adhoc with the aim of a Europe-wide distribution. The issuer is responsible
  for the content of this announcement.

13.08.2007

Details of the person subject to the disclosure
requirement:

Name:              Dr.  Rudolf Staudigl

Reason for the disclosure requirement:

Reason:            Person performing managerial responsibilities
Position:          Member of a managing body

Details of the transaction:
Description of financial instrument: Share

ISIN:                DE000WCH8881
Type of transaction: purchase
Date:                13.08.2007
No of items:         162
Currency:            Euro
Price:               145.32000
Total amount traded: 23,541.84
Place:               Xetra
Explanation:

Issuer subject to the publication requirement:

end of announcement                               euro adhoc 14.08.2007 10:48:59

Further inquiry note:

Branche: Chemicals
ISIN: DE000WCH8881
WKN: WCH888
Index: CDAX, Classic All Share, HDAX, MDAX, Midcap Market Index,
Prime All Share
Börsen: Börse Frankfurt / official dealing/prime standard