MULTIPLE PROCESS METHOD FOR CONTINUOUSLY PRODUCING ALICYCLIC DIISOCYANATE

Japanese Patent JP2005320334

A

To provide an improved multiple process method for continuously producing an alicyclic diisocyanate.

In the multiple process method for continuously producing an alicyclic diisocyanate by reacting an alicyclic amine with a carbonic acid derivative and an alcohol to give an alicyclic diurethane and successively thermally decomposing the diurethane into the alicyclic diisocyanate, the formation of the diurethane is carried out by two processes, the diurethane from which a low-boiling component and a middle-boiling component are removed is thermally decomposed to liberate the fixed diisocyanate, a part of the decomposition bottoms of a decomposition apparatus is continuously conveyed, a high-boiling component is separated from the part, the conveyed material thus purified is reurethanized with an alcohol and recirculated in the processes.

JP2004359685	METHOD FOR PRODUCING AROMATIC AMINE
WO/2018/117247	METHOD FOR PRODUCING POROUS MOLDED BODY, METHOD FOR PRODUCING CATALYST FOR α-OLEFIN DIMERIZATION, METHOD FOR PRODUCING α-OLEFIN DIMER, POROUS MOLDED BODY, AND CATALYST FOR α-OLEFIN DIMERIZATION
JP4145373	Method for producing enol lactone of 2-oxocyclohexylidene acetic acid and application to production of 2-cumalanone

KOHLSTRUK STEPHAN DR
KRECZINSKI MANFRED
MICHALCZAK HANS-WERNER

JP2005136673A

November 17, 2005

May 09, 2005

Click for automatic bibliography generation  

DEGUSSA

C07B61/00; C07C263/06; C07C263/18; C07C265/10; C07C265/14; C07C263/04; (IPC1-7): C07C263/04; C07C263/18; C07C265/10; C07C265/14

Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel

Previous Patent: COMPOSITION FOR MAKEUP CONTAINING METAL OXIDE AND HETEROGENEOUS POLYHOLOSIDE

Next Patent: STERILIZATION METHOD WITH PERACETIC ACID