公开(公告)号：EP2069292A1

公开(公告)日：2009-06-17

申请号：EP07788303.1

申请日：2007-08-08

Applicant: BASF SE

Inventor： KLOETZER, Matthias ,  BLANKERTZ, Heinrich-Josef ,  GEORGI, Gunter ,  STROEFER, Eckhard ,  KRASE, Volker ,  SCHULZ, Gerhard ,  ANDREAS, Warzecha

IPC: C07C263/04 ,  C07C265/10 ,  C07C265/14

CPC classification number: C07C263/04 ,  C07C2601/14 ,  C07C265/14

Abstract: The invention relates to a multistage process for the continuous preparation of organic, distillable isocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic amines with urea and alcohols to liberate ammonia and form low molecular weight monomeric urethanes and thermal dissociation of the latter, in which by-products formed are at least partly utilized.

Abstract translation: 本发明涉及连续制备有机可蒸馏异氰酸酯，优选二异氰酸酯，特别优选脂族或脂环族二异氰酸酯的多阶段方法，其通过相应的有机胺与脲和醇反应以释放氨并形成低分子量单体氨基甲酸酯和热 后者的分解，其中形成的副产物至少部分被利用。