Petrochemical giant Braskem has made interest payments on some dollar bonds due in 2028 and 2031, according to sources. This comes as the company reviews its debt amid an industry downturn and ongoing financial pressures, including an environmental disaster. Braskem faces significant debt payments this month and has been working with advisers on its capital structure, with its credit rating downgraded. Meanwhile, its co-controlling conglomerate Novonor is seeking to sell its stake.