| 发明名称 | Process for preparing isocyanates | ||
| 摘要 | The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in which phosgene and amine are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas which comprises isocyanate and hydrogen chloride leaving the reactor is cooled in a quench by adding a liquid quench medium to form a mixture of reaction gas and quench medium as the product stream. The walls of the quench are essentially completely wetted with a liquid. | ||
| 申请公布号 | US8759568(B2) | 申请公布日期 | 2014.06.24 |
| 申请号 | US201013256523 | 申请日期 | 2010.04.07 |
| 申请人 | BASF SE | 发明人 | Lehr Vanessa Simone;Knoesche Carsten;Mattke Torsten |
| 分类号 | C07C263/00 | 主分类号 | C07C263/00 |
| 代理机构 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A process for preparing an isocyanate by reacting a corresponding amine with phosgene, optionally in the presence of an inert medium, in which phosgene and amine are first mixed and converted to the isocyanate in a reactor, thereby forming a reaction gas comprising isocyanate and hydrogen chloride, and in which the reaction gas leaving the reactor is cooled in a quench by adding a liquid quench medium to form a mixture of the reaction gas and the quench medium as the product stream, which comprises essentially completely wetting the walls of the quench with a liquid. | ||
| 地址 | Ludwigshafen DE | ||