Title:
脂環式ジイソシアネートを製造するための塩素貧有の多工程法
Document Type and Number:
Japanese Patent JP2011521923
Kind Code:
A
Abstract:
Low chlorine, multi-staged method for producing cycloaliphatic diisocyanates. The invention relates to a multi-staged method for the continuous low-chlorine production of cycloaliphatic diisocyanates, comprising the synthesis of diaminodipheynl alkanes, the hydration thereof into the corresponding cycloaliphatic diamines and the subsequent conversion of cycloaliphatic diamines to the corresponding cycloalkylene biscarbamates and the thermal cleaving of the latter into the cycloaliphatic diisocyanates and alcohol.
Inventors:
Gerda Grund
Manfred Kretzing Ski
Stephan Cole Stroke
Christian lettman
Manfred Kretzing Ski
Stephan Cole Stroke
Christian lettman
Application Number:
JP2011510943A
Publication Date:
July 28, 2011
Filing Date:
May 18, 2009
Export Citation:
Assignee:
Evonik Degussa GmbH
International Classes:
C07C263/04; C07C265/14; C07B61/00
Domestic Patent References:
| JPS5751722A | 1982-03-26 | |||
| JPS5432461A | 1979-03-09 | |||
| JP2005068146A | 2005-03-17 | |||
| JPS62502612A | 1987-10-08 | |||
| JP2005532401A | 2005-10-27 | |||
| JP2005336190A | 2005-12-08 | |||
| JP2005068147A | 2005-03-17 | |||
| JP2005036788A | 2005-02-10 | |||
| JP2005068148A | 2005-03-17 | |||
| JP2005320334A | 2005-11-17 | |||
| JPS5751722A | 1982-03-26 | |||
| JPS5432461A | 1979-03-09 |
Attorney, Agent or Firm:
Takuya Kuno
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard
Toshio Yano
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Ryoichi Shino
Einzel Felix-Reinhard