Process for the preparation of isocyanate-type aromatic...

Details Process for the preparation of isocyanate-type aromatic... Process for the preparation of isocyanate-type aromatic...

C - Chemistry, Metallurgy

07

C

C07C 265/14 (2006.01) C07C 263/10 (2006.01)

Patent

CA 2108508

The invention relates to a process for preparing aromatic compounds substituted with at least two isocyanate groups, characterized in that reagents consisting of at least one compound (A) comprising at least two primary amine functions and at least one aromatic unit is contacted, in the gaseous phase, with phosgene, and that the reagents are contacted in a reactor that is not equipped with a stirring system.

L'invention concerne un procédé de préparation de composés aromatiques substitués par au moins deux groupements isocyanates, caractérisé en ce que l'on met en contact, en phase gazeuse, des réactifs comprenant au moins un composé (A) comprenant au moins deux fonctions amine primaire et au moins un motif aromatique avec du phosgène, et en ce que la mise en contact de ces réactifs est effectuée dans un réacteur qui est dépourvu de mobile d'agitation.

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