Brazilian petrochemical firm Braskem SA said on Friday it signed a naphtha contract with state-run oil firm Petrobras, valid until the end of October.

The contract continues the terms of a previous deal, but Braskem said in a statement that it continued to work with Petroleo Brasileiro SA< PETR4.SA>, as the company is formally known, to reach a long term solution regarding the supply of naphtha.

(Reporting by Stephen Eisenhammer)