Method For the Reduction of Chlorine-Containing Components in Organic Isocyanates

摘要

The invention relates to a method for largely eliminating chlorine compounds from organic isocyanates or isocyanate mixtures by contacting said isocyanates or isocyanate mixtures with a water-containing inert gas flow or an organic material having a cation-exchanging effect. The inventive method allows the isocyanates to be gently freed from chorine-containing compounds and is particularly suitable for temperature-sensitive isocyanates.