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Patent Searching and Data


Title:
イソシアナートの製造方法
Document Type and Number:
Japanese Patent JP2013505280
Kind Code:
A
Abstract:
The invention relates to a multistage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic polyamines with carbonic acid derivatives and alcohols to form low molecular weight monomeric polyurethanes and thermal dissociation of the latter, in which the polyisocyanates produced and unusable residues are separated off at particular stages of the reaction and reusable by-products and intermediates are recirculated to preceding stages.

Inventors:
Torsten Matke
Matthias Cretzer
Eckhart Stroefer
Bernhard Geisler
Peter Zener
Application Number:
JP2012530211A
Publication Date:
February 14, 2013
Filing Date:
September 09, 2010
Export Citation:
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Assignee:
BASF SE
International Classes:
C07C263/06; B01F3/08; B01F5/02; B01F5/04; C07C265/14
Domestic Patent References:
JP2009507886A2009-02-26
JPH07196594A1995-08-01
Attorney, Agent or Firm:
Takuya Kuno
Takahashi
Kiyoshi Kuruma
Kimihiro Hoshi
Hiroyasu Ninomiya
Shuichi Sumiyoshi
Ryoichi Shino
Ueshima
Yasushi Miyagi
Einzel Felix-Reinhard