21. The top three compounds are acrolein, formaldehyde and acrylonitrile , all known carcinogens. 22. TBBPA is also used as an additive in acrylonitrile butadiene styrene ( ABS ). 23. Cyanamid also was a major producer of acrylonitrile , and its derivative, acrylamide. 24. In 1966, Osaka factory developed the acrylonitrile butadiene styrene ( ABS RESIN ). 25. The other two are polymers and acrylonitriles . 26. BP Chemicals, based in Cleveland, is the world's leading acrylonitrile producer. 27. ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the presence of polybutadiene. 28. A recovery column removes bulk water, and acrylonitrile and acetonitrile are separated by distillation. 29. Examples of monomers that can be incorporated are methyl vinyl ketones methyl acrylate and acrylonitrile . 30. Acrylonitrile is the solvent for the reaction.