Silicone and quartz producer Momentive Performance Materials Inc. (MPM) has announced it is in discussions with various stakeholders regarding alternatives to modify its capital structure and reduce debt leverage. Whether or not an agreement is reached, MPM may file for Chapter 11 bankruptcy protection. The company has stated that it is in compliance with the terms of its outstanding notes and credit agreements. We are lowering our corporate credit rating on MPM by one notch to 'CC' from 'CCC-' and taking various other rating actions. In addition, we are placing all our ratings on MPM on CreditWatch with negative implications. The CreditWatch listing indicates that we expect to lower the ratings when the company defaults on an interest payment, files