PROCESS FOR PREPARING CARBODIIMIDES

• Main Author: LAUFER, WILHELM
• Format: Patent
• Language: English; French
• Published: 27.10.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to a new process for the preparation of carbodiimides comprising the steps of a) carbodiimidisating isocyanates in the presence of a catalyst, b) separating the catalyst and/or monomeric isocyanate from the carbodiimide by distillation or extraction in order to obtain a crude c...