申请人:Bayer Aktiengesellschaft
公开号:US04359426A1
公开(公告)日:1982-11-16
The instant invention is directed to a process for the production of an aromatic isocyanate containing aromatically bound sulfochloride groups, comprising: (I) reacting (a) an isocyanate or carbamic acid chloride which contains at least one aromatically bound isocyanate group and/or at least one aromatically bound carbamic acid chloride group, successively or simultaneously at 0.degree. to 170.degree. C. with (b) a sulfonating agent and (c) an organic compound containing at least one aromatically bound trihalo methyl group and (II) removing hydrogen chloride from the reaction mixture at 20.degree. to 170.degree. C.
本发明涉及一种生产含有芳香基硫酰氯基团的芳香基异氰酸酯的过程,包括:(I)在0℃至170℃下,连续或同时反应(a)至少含有一个芳香基异氰酸酯基团和/或至少含有一个芳香基氨基甲酰氯基团的异氰酸酯或氨基甲酰氯,与(b)磺化剂和(c)至少含有一个芳香基三卤甲基基团的有机化合物;(II)在20℃至170℃下,从反应混合物中去除氯化氢。