Nitrosamine Free Curing Systems for Modern Rubber Compounds

摘要

The international discussion about cancerogenic N-nitrosamines generated during or after vulcanisation of rubber products started in the late 70's. It reached it's climax about 1994 when the German government passed a law limiting nitrosamines to a maximum concentration of 2,5 mug per cubic meter of air. International discussion lost momentum because other countries did not follow the German initiative. The topi was more an intellectual than a real problem until recently, when the automotive industry demanded nitrosamine free products. With increasing sensibility regarding environmental aspects there is a growing list of curing agents (and additives) that may not be used in the near future anymore.