Title:
色の安定なMDAとMDIの製造方法
Document Type and Number:
Japanese Patent JP5416830
Kind Code:
B2
Abstract:
The invention relates to a process for preparing methylenediphenyldiamine (MDA) by reacting formaldehyde and aniline in the presence of an acidic catalyst, wherein the oxygen content in the process for preparing MDA is <10 000 ppm, based on all compounds present in the process. The invention further relates to the phosgenation of MDA to methylenediphenyl diisocyanate (MDI).
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Inventors:
Streffer, Eckhart
Schelling, Heiner
Reinhard, Robert
Selinger, michael
Brunninger, Daniel
Clemmer, Marx
Thiele, Chi
Van den abert, peter
Schelling, Heiner
Reinhard, Robert
Selinger, michael
Brunninger, Daniel
Clemmer, Marx
Thiele, Chi
Van den abert, peter
Application Number:
JP2012506458A
Publication Date:
February 12, 2014
Filing Date:
April 20, 2010
Export Citation:
Assignee:
BASF SE
International Classes:
C07C209/78; C07C211/50; C07C263/10; C07C265/14; C07B61/00
Domestic Patent References:
| JP2004059920A | ||||
| JP2007197449A | ||||
| JP2003503383A | ||||
| JP2006503007A | ||||
| JP2002502838A | ||||
| JP2000007623A |
Attorney, Agent or Firm:
Satoshi Eto