| 发明名称 |
PROCESSO PARA A PREPARACAO DE ISOCIANATOS PUROS |
| 摘要 |
The invention relates to a process for preparing pure distilled isocyanates by reaction of the corresponding amines with phosgene in a suitable solvent and multi-stage distillative treatment to give pure isocyanates, pure solvent and a proportion of residue, this residue being treated. <IMAGE> |
| 申请公布号 |
BR9205129(A) |
申请公布日期 |
1993.06.29 |
| 申请号 |
BR19929205129 |
申请日期 |
1992.12.22 |
| 申请人 |
BAYER AG. |
发明人 |
JAVIER CALVO ARRIBAS;CIRIACO DOMINGO ARRIBAS;SALVADOR VIDAL RODRIGUEZ |
| 分类号 |
C07C263/10;C07C263/20;C07C265/14;(IPC1-7):C07C263/18 |
主分类号 |
C07C263/10 |
| 代理机构 |
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