| 摘要 |
The invention relates to a process for the preparation of aromatic compounds substituted by at least two isocyanate groups, characterised in that at least one compound (A) comprising at least two primary amine functional groups and at least one aromatic unit is brought into contact, in the gas phase, with phosgene and in that the reactor, in which these reactants are brought into contact, is not being stirred. |
