发明名称 |
PROCEDE DE SEPARATION DU TOLUENE DIISOCYANATE CONTENU DANS LES RESIDUS DE SA FABRICATION |
摘要 |
Process for the separation of toluene diisocyanate (TDI) from the residues from its manufacture, with a view to its recovery. …<??>The process is characterised in that the said residues are pretreated with an inert gas in a liquid or supercritical state, if appropriate in the presence of a coextractant chosen from esters, optionally chlorinated aromatic hydrocarbons and chlorinated aliphatic hydrocarbons. …<??>The process is suitable in particular for the treatment of residues which are in the form of tars. |
申请公布号 |
FR2625742(B1) |
申请公布日期 |
1990.06.22 |
申请号 |
FR19880000466 |
申请日期 |
1988.01.13 |
申请人 |
RHONE POULENC CHIMIE |
发明人 |
GERARD COLLAS;GEORGES GROS;FERENC SAGI |
分类号 |
C07C263/18;C07B63/04;C07C;C07C67/00;C07C241/00;C07C263/10;C07C263/20;C07C265/12;C07C265/14;(IPC1-7):C07C119/048 |
主分类号 |
C07C263/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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