 Moodys Investors Service, Moodys affirmed Braskem S.A. Braskems Ba1 corporate family rating and the Ba1 ratings on the foreign and local currency debt issuances of Braskem Finance Ltd and Braskem America Finance Company, respectively, fully guaranteed by Braskem S.A. The outlook for the ratings was changed to negative from stable. Ratings Affirmed: ..Issuer: : Braskem S.A. 