Celanese, the German chemicals group, has appointed Lehman Brothers for the first time on a public mergers and acquisitions deal to advise it on the sale of its polypropylene film business to Bain Capital and Dor-Moplefan.

Bain Capital, a US private equity group, and Dor-Moplefan, the Israeli chemicals group, will pay Celanese €200m ($197m) for Trespaphan. The deal will be financed partly with debt. There will initially be a bridge financing, and a source close to the deal said a high-yield bond will probably be issued later on.