OPTIONAL ISOMERIC MIXTURE REPRESENTATIVE CYCLOALIPHATIC DIISOCYANATES, A METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS BASE MATERIALS IN THE PRODUCTION OF POLYURETHANE MATERIALS

摘要

Diisocyanates and isomer mixtures of diisocyanates corresponding to the formula IMAGE in which R1, R2, m and n are as defined herein are produced by phosgenating diamines and isomer mixtures of diamines corresponding to the formula IMAGE in which R1, R2, m and n are as defined herein. These diisocyanates which are liquid at room temperature and highly compatible with polyols are particularly useful in the production of polyurethanes.