Title:
N,N-DIHYDROCARBYL AMIDE CARBOXYLIC ACID, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/266919
Kind Code:
A1
Abstract:
Provided are an N,N-dihydrocarbyl amide carboxylic acid, a preparation method therefor and a use thereof. The N,N-dihydrocarbyl amide carboxylic acid can be used as an extractant to enrich rare earth elements from a low-concentration rare earth raw material, to separate and purify yttrium element from a mixed rare earth raw material, and to separate elements such as aluminum, iron, radioactive thorium, radioactive uranium and actinium from the mixed rare earth raw material. The compound is easy to synthesize, low in cost, good in chemical stability as an extractant, and is resistant to strong acids and strong bases without decomposition.
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Inventors:
WANG YANLIANG (CN)
XIAO WENTAO (CN)
WU YUYUAN (CN)
LIN JINCHI (CN)
XIAO WENTAO (CN)
WU YUYUAN (CN)
LIN JINCHI (CN)
Application Number:
PCT/CN2021/102010
Publication Date:
December 29, 2022
Filing Date:
June 24, 2021
Export Citation:
Assignee:
FUJIAN CHANGTING GOLDEN DRAGON RARE EARTH CO LTD (CN)
International Classes:
C07C233/05; C07C231/02; C07C233/09; C22B3/32; C22B59/00
Foreign References:
| EP0508004A1 | 1992-10-14 | |||
| JPH0436266A | 1992-02-06 | |||
| US5844103A | 1998-12-01 | |||
| CN101945575A | 2011-01-12 | |||
| JPH03133952A | 1991-06-07 | |||
| JPH0495059A | 1992-03-27 | |||
| US5786468A | 1998-07-28 | |||
| CN103582711A | 2014-02-12 | |||
| CN112575188A | 2021-03-30 | |||
| CN109824532A | 2019-05-31 | |||
| CN104529861A | 2015-04-22 | |||
| CN106892835A | 2017-06-27 |
Other References:
AJISAWA YUKIYOSHI, ET AL.: "Studies on the Synthesis of Cholecystokinin A Receptor Antagonists. II. Synthesis and Cholecystokinin A Receptor Inhibitory Activities of Sulfur- Containing Amide-Carboxylic Acid Derivatives", YAKUGAKU ZASSHI : JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN APR 2011, PHARMACEUTICAL SOCIETY OF JAPAN, JP, vol. 116, no. 8, 1 January 1996 (1996-01-01), JP , pages 647 - 656, XP055939053, ISSN: 1347-5231, DOI: 10.1248/yakushi1947.116.8_647
DATABASE REGISTRY 12 June 2008 (2008-06-12), ANONYMOUS : "5-Hexenoic acid, 3-[(dioctadecylamino)carbonyl]-4-oxo- (CA INDEX NAME) ", XP055939056, retrieved from STN Database accession no. 1027464-50-1
See also references of EP 4155291A4
DATABASE REGISTRY 12 June 2008 (2008-06-12), ANONYMOUS : "5-Hexenoic acid, 3-[(dioctadecylamino)carbonyl]-4-oxo- (CA INDEX NAME) ", XP055939056, retrieved from STN Database accession no. 1027464-50-1
See also references of EP 4155291A4
Attorney, Agent or Firm:
SHANGHAI BESHINING LAW OFFICE (CN)
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