| (19) |
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(11) |
EP 1 681 263 A8 |
| (12) |
CORRECTED EUROPEAN PATENT APPLICATION |
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published in accordance with Art. 158(3) EPC |
| (15) |
Correction information: |
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Corrected version no 1 (W1 A1) |
| (48) |
Corrigendum issued on: |
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11.10.2006 Bulletin 2006/41 |
| (43) |
Date of publication: |
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19.07.2006 Bulletin 2006/29 |
| (22) |
Date of filing: 15.10.2004 |
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| (51) |
International Patent Classification (IPC):
|
| (86) |
International application number: |
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PCT/JP2004/015231 |
| (87) |
International publication number: |
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WO 2005/040039 (06.05.2005 Gazette 2005/18) |
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| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
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| (30) |
Priority: |
23.10.2003 JP 2003363403
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| (71) |
Applicant: IDEMITSU KOSAN CO., LTD. |
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Tokyo 100-8321 (JP) |
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| (72) |
Inventors: |
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- SEINO, Yoshikatsu
Ichihara-shi, Chiba 2990107 (JP)
- SENGA, Minoru
Ichihara-shi, Chiba 2990107 (JP)
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| (74) |
Representative: Gille Hrabal Struck Neidlein Prop Roos |
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Brucknerstrasse 20
40593 Düsseldorf
40593 Düsseldorf (DE) |
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| (54) |
METHOD FOR PURIFYING LITHIUM SULFIDE |
(57) A method of purifying lithium sulfide wherein lithium sulfide obtained by reacting
lithium hydroxide with hydrogen sulfide in an aprotic organic solvent is washed with
an organic solvent at a temperature of 100°C or higher. Impurities contained in lithium
sulfide can be reduced by the method of purification.