Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Platinum group metal
Reexamination Certificate
2007-06-06
2011-10-18
Bos, Steven (Department: 1736)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Platinum group metal
C423S070000
Reexamination Certificate
active
08038969
ABSTRACT:
The present invention provides a rare metal/platinum-group metal extractant, which has a completely new structure compared with the conventional rare metal/platinum-group metal extractant and which exhibits excellent extraction performance; it also provides a method for extracting rare metals and platinum-group metals using the extractant. The rare metal/platinum-group metal extractants of the present invention is the one to extract rare metals and platinum-group metals by contacting a solution, in which several kinds of rare metals and platinum-group metals are dissolved, with a solution in which a cyclic phenol sulfide of the following Formula (1) is dissolved to make the rare metals and platinum-group metals move into the cyclic phenol sulfide solution.
REFERENCES:
patent: 5881358 (1999-03-01), Miyano et al.
patent: 6602970 (2003-08-01), Ando et al.
patent: 10-175971 (1998-06-01), None
patent: 11-179104 (1999-07-01), None
patent: 11-199581 (1999-07-01), None
patent: 2000-107505 (2000-04-01), None
patent: 2000-178271 (2000-06-01), None
patent: 2001-149884 (2001-06-01), None
patent: 2002-069261 (2002-03-01), None
Translation of Japan 10-175971, Jun. 1998.
Takashi Kajiwara, et al; “Sulfonylcalix [4] arene as a Bis-Tridentate Facial Ligand: Syntheses and Structures of Dinuclear Complexes, [M2(L)(H2O)2(dmf)4] (M=Co(II), Ni(II); H4L=p-tert-Butylsulfonylcalix[4]arene)”, Chemistry Letters 2001 (exact date not given in publication), p. 6 & 7.
M. KYR{hacek over (s)}, et al; “Synergistic solvent extraction of Eu, Sr and Cs into chlorobenzene solutions of the three conformers of tetrathiocalixarene and dicarbollide”, Journal of Radioanalytical and Nuclear Chemistry, vol. 258, No. 3, pp. 497-509, Dec. 2003 (exact date not available).
Takasi Katsu, et al; “Ethylammonium-Selective Membrane Electrode Usingp-tert-Butylcalix[6]arene Derivative”, Analytical Sciences, vol. 18, No. 4, pp. 473-476, Apr. 2002 (exact date not available).
Hiroaki Matsumiya, et al; “Sulfonylcalix[4]arenetetrasulfonate as pre-column chelating reagent for selective determination of aluminum(III), iron(III), and titanium(IV) by ion-pair reverses-phase high-performance liquid chromatography with spectrophotometric detection”, Talanta 62, pp. 337-342, Feb. 6, 2004.
International Search Report: PCT/JP2007/061464.
Akama Mitsuhiro
Hamada Fumio
Imai Takanori
Kondo Yoshihiko
Shibayama Atsushi
Bos Steven
Ladas & Parry LLP
National University Corporation Akita University
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