chemical dispersants en Petitions Delivered To Federal Court For Keeping Corexit Maker in BP Lawsuit <p>A federal judge in New Orleans will accept materials through a deadline next week on whether Nalco, the maker of chemical dispersants used in the BP oil spill, can remain in litigation. Hundreds of signatures have been submitted to keep the chemical maker included.&nbsp; Fri, 15 Jun 2012 11:00:00 +0000 Eileen Fleming 13754 at