Title:
イソシアナートの製造方法
Document Type and Number:
Japanese Patent JP5074400
Kind Code:
B2
Abstract:
The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.
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| WO/2009/095164 | METHOD FOR PRODUCING URETHANES |
| JP2008127293 | CARBAMIC ACID ESTER COMPOUND |
| WO/2007/031444 | PROCESS FOR THE PREPARATION OF ISOCYANATES |
Inventors:
Matthias Cretzer
Eckhart Stroefer
Volker Crase
Andreas Schmidt
Peter Sherbell
Eckhart Stroefer
Volker Crase
Andreas Schmidt
Peter Sherbell
Application Number:
JP2008530480A
Publication Date:
November 14, 2012
Filing Date:
September 05, 2006
Export Citation:
Assignee:
BASF SE
International Classes:
C07C263/04; C07C265/14; C07C269/04; C07C271/20; C07B61/00
Domestic Patent References:
| JP6025136A | ||||
| JP2005068148A | ||||
| JP10113549A |
Foreign References:
| WO2004056756A1 |
Attorney, Agent or Firm:
Ryoichi Shino
Shuichi Sumiyoshi
Yasushi Miyagi
Kiyoshi Kuruma
Toshio Yano
Takuya Kuno
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Shuichi Sumiyoshi
Yasushi Miyagi
Kiyoshi Kuruma
Toshio Yano
Takuya Kuno
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard