Title:
METHOD FOR PRODUCING POLYOXYALKYLENE ALKYL ETHER CARBOXYLIC ACID OR SALT THEREOF
Document Type and Number:
WIPO Patent Application WO/2013/099109
Kind Code:
A1
Abstract:
This method for producing a polyoxyalkylene alkyl ether carboxylic acid or a salt thereof has an oxidation reaction step of oxygen oxidation of a polyoxyalkylene alkyl ether by supplying an oxygen-containing gas into a suspension or a solution which has a depth of 200 mm or more and contains a polyoxyalkylene alkyl ether. In the oxidation reaction step, the supply rate of the oxygen-containing gas is reduced when the reaction rate is 50% or more and less than 70%.
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Inventors:
NAKAI TAKESHI (JP)
FUJIOKA TOKU (JP)
AMISHIGE YASUO (JP)
FUJIOKA TOKU (JP)
AMISHIGE YASUO (JP)
Application Number:
PCT/JP2012/007599
Publication Date:
July 04, 2013
Filing Date:
November 27, 2012
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
C07C51/23; C07C59/125; C08G65/324; C11D1/06; C07B61/00
Foreign References:
| JP2011184379A | 2011-09-22 | |||
| JPH05503686A | 1993-06-17 | |||
| JPS62198641A | 1987-09-02 | |||
| JP2011184379A | 2011-09-22 | |||
| JP2011184380A | 2011-09-22 | |||
| JP2011136933A | 2011-07-14 | |||
| JPS62269746A | 1987-11-24 |
Other References:
"Kagaku Kougaku Binran, 6th edition", MARUZEN, pages: 993
See also references of EP 2799423A4
See also references of EP 2799423A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Patent business corporation MAEDA PATENT OFFICE (JP)
Patent business corporation MAEDA PATENT OFFICE (JP)
Download PDF:
Claims:
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