Title:
METHOD FOR PRODUCING CARBODIIMIDE
Document Type and Number:
WIPO Patent Application WO/2011/158958
Kind Code:
A1
Abstract:
Disclosed is a production method for a carbodiimide which includes: a step (1) for obtaining a thiourea shown in formula (B) by reacting an aminic body shown in the formula (A) and a carbon disulfide in the presence of a catalyst and at a reaction temperature between 50ºC and 150ºC (in the formula (A), R represents an alkyl group with 1 to 6 hydrogen or carbon atoms; in the formula (B), R represents the same as in formula (A)); a step (2) for desulfurization of the obtained thiourea using a hydrochlorite in the presence of a basic compound to obtain a carbodiimide shown in formula (C) (in the formula (C), R represents the same as in formula (A)); and a step (3) to refine the obtained carbodiimide.
Inventors:
SUZUKI KENJI (JP)
KATO TSUKASA (JP)
YAMADA TSUTOMU (JP)
KAMADA YUYA (JP)
SHOJI SHINICHIRO (JP)
KATO TSUKASA (JP)
YAMADA TSUTOMU (JP)
KAMADA YUYA (JP)
SHOJI SHINICHIRO (JP)
Application Number:
PCT/JP2011/064193
Publication Date:
December 22, 2011
Filing Date:
June 15, 2011
Export Citation:
Assignee:
KAWAGUCHI CHEMICAL INDUSTRY CO LTD (JP)
TEIJIN LTD (JP)
SUZUKI KENJI (JP)
KATO TSUKASA (JP)
YAMADA TSUTOMU (JP)
KAMADA YUYA (JP)
SHOJI SHINICHIRO (JP)
TEIJIN LTD (JP)
SUZUKI KENJI (JP)
KATO TSUKASA (JP)
YAMADA TSUTOMU (JP)
KAMADA YUYA (JP)
SHOJI SHINICHIRO (JP)
International Classes:
C07D498/10; B01J31/02
Domestic Patent References:
| WO2008081230A1 | 2008-07-10 | |||
| WO2010071211A1 | 2010-06-24 |
Foreign References:
| JP2004332166A | 2004-11-25 | |||
| JP2005350829A | 2005-12-22 | |||
| JP2004332166A | 2004-11-25 | |||
| JP2005350829A | 2005-12-22 | |||
| JP2009071190W | 2009-12-15 |
Other References:
PEDRO MOLINA ET AL.: "A New and Efficient Preparation of Cyclic Carbodiimides from Bis(iminophosphoranes) and the System Boc20/DMAP", JOURNAL OF ORGANIC CHEMISTRY, vol. 59, 1994, pages 7306 - 7315
See also references of EP 2583971A4
See also references of EP 2583971A4
Attorney, Agent or Firm:
OHSHIMA Masataka (JP)
Masataka Oshima (JP)
Masataka Oshima (JP)
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Claims:
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