...+ U.S.-based silicone and quartz producer Momentive Performance Materials Inc. emerged from bankruptcy Oct. 24, 2014. + We are assigning a 'B-' corporate credit rating and various debt ratings to the reorganized company. + The stable outlook indicates that the company's reduced debt burden should result in leverage and liquidity supportive of the ratings. NEW YORK (Standard & Poor's) Dec. 19, 2014--Standard & Poor's Ratings Services today assigned a 'B-' corporate credit rating to Momentive Performance Materials Inc. (MPM). The outlook is stable. At the same time, we assigned a 'B' issue rating and '2' recovery rating to the company's $1.1 billion 3.88% first-priority senior secured notes due 2021. In addition, we assigned a 'B-' issue rating and '4' recovery rating to the company's $250 million 4.69% second-priority senior secured notes due 2022. "The ratings reflect what we regard as MPM's 'vulnerable' business risk profile and 'highly leveraged' financial risk profile," said Standard...