PROCESS FOR PRODUCTION OF AROMATIC IZOCYANATS
Aromatic isocyanates the prods. are prepd. from appropriately substd. aniline derivs. or the inorganic salts of these by batchwise, semi-continuous or continuous reaction with gaseous or liq. phosgene at 0-120 deg.C and atmospheric or elevated pressure of 0-50 bar in a multi-component medium contg....
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Zusammenfassung: | Aromatic isocyanates the prods. are prepd. from appropriately substd. aniline derivs. or the inorganic salts of these by batchwise, semi-continuous or continuous reaction with gaseous or liq. phosgene at 0-120 deg.C and atmospheric or elevated pressure of 0-50 bar in a multi-component medium contg. di-substd. carbamoyl-chloride or di-substd. amine or tri-substd. urea as solvent and/or catalysts. |
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