Title:
METHOD FOR PREPARING DIMETHYLSULFOXIDE
Document Type and Number:
WIPO Patent Application WO/2014/175187
Kind Code:
A1
Abstract:
Provided is a method for preparing, in an economical manner and with favorable yield, a dimethylsulfoxide having a reduction in malodor and satisfying the stipulations of the United States Pharmacopoeia. The present invention is characterized by contacting 100 parts by weight of a starting material dimethylsulfoxide to activated charcoal in the presence of at least 20 parts by weight of water, and then distilling at an internal temperature of no greater than 130°C.
Inventors:
ISHINO MICHIKO (JP)
TANAKA KOJI (JP)
ABE HIROMITSU (JP)
NAGAHAMA DAISUKE (JP)
INOUE HIDEKI (JP)
TANAKA KOJI (JP)
ABE HIROMITSU (JP)
NAGAHAMA DAISUKE (JP)
INOUE HIDEKI (JP)
Application Number:
PCT/JP2014/061074
Publication Date:
October 30, 2014
Filing Date:
April 18, 2014
Export Citation:
Assignee:
TORAY FINECHEMICALS CO LTD (JP)
International Classes:
C07C315/06; C07C317/04
Foreign References:
| JP2009096792A | 2009-05-07 | |||
| JP2005247770A | 2005-09-15 | |||
| JPH11228530A | 1999-08-24 | |||
| JPH10330348A | 1998-12-15 | |||
| JPH11501942A | 1999-02-16 |
Attorney, Agent or Firm:
Seiryu Patent Professional Corporation et al. (JP)
Clear stream international patent business corporation (JP)
Clear stream international patent business corporation (JP)
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