Sept5(Reuters)-TrinseoSA(TSE.N)*Trinseo-onAugust29,2017,TrinseoMaterialsOperatingS.C.A,TrinseoMaterialsFinanceInc,executedindenturewithBankofNewYorkMellon-SECfiling*TrinseoSA-interestonnotesispayablesemi-annuallyonmay3,November3ofeachyear,commencingonMay3,2018,notesmatureonSeptember1,2025*TrinseoSAsaysTrinseoMaterialsOperatingS.C.A.andTrinseoMaterialsF...