Title:
METHOD FOR PRODUCING A METHYLENE DISULFONATE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2012/026266
Kind Code:
A1
Abstract:
Disclosed is a method for producing a methylene disulfonate compound by reacting, in the presence of an acid and a dehydrating agent, a formaldehyde compound and at least one type of alkane disulfonic acid salt selected from a group consisting of: an alkane disulfonic acid alkali metal salt represented by a specific formula; and an alkane disulfonic acid alkaline earth metal salt. By means of the disclosed production method, the methylene disulfonate compound can be produced easily and economically.
Inventors:
BANDO SEIJI (JP)
FUJIWARA TAKESHI (JP)
SHIRAISHI HIROYUKI (JP)
HIYAMA TAKEHIRO (JP)
FUJIWARA TAKESHI (JP)
SHIRAISHI HIROYUKI (JP)
HIYAMA TAKEHIRO (JP)
Application Number:
PCT/JP2011/067072
Publication Date:
March 01, 2012
Filing Date:
July 27, 2011
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
BANDO SEIJI (JP)
FUJIWARA TAKESHI (JP)
SHIRAISHI HIROYUKI (JP)
HIYAMA TAKEHIRO (JP)
BANDO SEIJI (JP)
FUJIWARA TAKESHI (JP)
SHIRAISHI HIROYUKI (JP)
HIYAMA TAKEHIRO (JP)
International Classes:
C07D327/00
Domestic Patent References:
| WO2007125736A1 | 2007-11-08 | |||
| WO2008032463A1 | 2008-03-20 |
Foreign References:
| JP2006188449A | 2006-07-20 | |||
| JPS61501089A | 1986-05-29 | |||
| JP2005336155A | 2005-12-08 |
Other References:
See also references of EP 2610250A4
RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS, vol. 48, 1929, pages 949 - 952
RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS, vol. 48, 1929, pages 949 - 952
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
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Claims: