C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/455
C07C 265/14 (2006.01) C07C 71/00 (2006.01) C07C 263/10 (2006.01) C07C 263/20 (2006.01) C07C 265/12 (2006.01)
Patent
CA 1309721
Mo-3090 LeA 25,665 PROCESS FOR THE CONTINUOUS PRODUCTION OF MONO- AND POLYISOCYANATES ABSTRACT OF THE INVENTION This invention relates to a process for the continuous production of an organic monoisocyanate or polyisocyanate in a single stage reaction. A reaction mixture is formed by continuously mixing, at a temperature elevated above room temperature but not exceeding about 150°C, a solution in a substantially inert organic solvent of a monoamine or polyamine corresponding to the monoisocyanate or polyisocyanate and a solution in a substantially inert organic solvent of phosgene. The reaction mixture is continuously passed upwards from below through a reaction column comprising at least 10 separate chambers separated by perforated plates, wherein each perforation of said perforated plates has a diameter of less than about 20 mm. Mo-3090
580750
de Vos Stefaan
Eckermann Rolf-W.
Humburger Siegbert
Judat Helmut
Zaby Gottfried
Aktiengesellschaft Bayer
de Vos Stefaan
Eckermann Rolf-W.
Humburger Siegbert
Judat Helmut
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