m-トルエンジアミン又はm-トルエンジイソシアナートの製造法

Title:

m-トルエンジアミン又はm-トルエンジイソシアナートの製造法

Document Type and Number:

Japanese Patent JP5300182

Kind Code:

B2

Abstract:

Toluenediamine is produced and separated from by-products of the reaction by: a) hydrogenating dinitrotoluene in the presence of a catalyst, b) separating the catalyst, water and optionally solvent from the hydrogenation reaction mixture to give crude toluenediamine, and c) separating by distillation the crude toluenediamine in a separating wall column into at least four product streams P 1 , P 2 , P 3 and P 4 . The product stream P 1 is a stream containing low boilers. The product stream P 2 is a stream containing o-toluenediamine. The product stream P 3 is a stream containing m-toluenediamine. The product stream P 4 is a stream containing high boilers and m-toluenediamine.

Inventors:

Bernd Penneman
Bill bloody
Liner booze
Gerd Greger

Application Number:

JP2006190679A

Publication Date:

September 25, 2013

Filing Date:

July 11, 2006

Export Citation:

Click for automatic bibliography generation Help