Title:
イソシアネートの製造方法
Document Type and Number:
Japanese Patent JP6804512
Kind Code:
B2
Abstract:
A method for producing isocyanates by reacting primary amines with phosgene in a stoichiometric excess in the gas phase, wherein the excess phosgene is subsequently recovered and recirculated back into the reaction. particular a method for the feedback-controlled recirculation of the recovered phosgene, particularly when the phosgene stream that should be recovered is distributed between multiple gas-phase reactors operated in parallel.
Inventors:
Fleet Helm, Stephens
Bastian, Marl
Bastian, Marl
Application Number:
JP2018501949A
Publication Date:
December 23, 2020
Filing Date:
July 12, 2016
Export Citation:
Assignee:
COVESTRO DEUTSCHLAND AG
International Classes:
C07C263/18; C07C263/10; C07C265/14
Domestic Patent References:
| JP2012532160A | ||||
| JP2014508100A | ||||
| JP2009503022A |
Foreign References:
| US20120123152 | ||||
| CN102498093A |
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Hiroshi Sorimachi
Mari Asano
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Hiroshi Sorimachi
Mari Asano