Title:
PROCESS FOR EXCHANGING THE ANIONS OF CATIONIC COMPOUNDS
Document Type and Number:
WIPO Patent Application WO2003076518
Kind Code:
A3
Abstract:
Process for converting sparingly soluble salts of cationic organic compounds and inorganic acids into more readily soluble salts of organic acids, which process comprises: a) preparing a sparingly water-soluble salt of the cationic organic compound with the anion of an inorganic acid, b) adding thereto, in a monohydric aliphatic alcohol, an alkali metal salt or an organic acid, c) filtering off the resulting sparingly soluble alkali metal salt of the inorganic acid, and d) optionally converting the resulting solution into a solid form.
Inventors:
MOECKLI PETER (CH)
Application Number:
PCT/EP2003/002199
Publication Date:
February 05, 2004
Filing Date:
March 04, 2003
Export Citation:
Assignee:
CIBA SC HOLDING AG (CH)
MOECKLI PETER (CH)
MOECKLI PETER (CH)
International Classes:
A61K8/00; A61K8/49; A61Q5/10; C09B19/00; C09B26/02; C09B44/16; C09B57/00; C09B69/06; D06P1/66; D06P3/04; (IPC1-7): C09B44/16
Foreign References:
| EP0097125A2 | 1983-12-28 | |||
| US4524204A | 1985-06-18 | |||
| GB757987A | 1956-09-26 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 16 8 May 2001 (2001-05-08)
KRECHL, J. ET AL.: "p-Substituted Benzamidinium Carboxylates", COLLECT. CZECH. CHEM. COMMUN., vol. 54, 1989, pages 2415 - 2424, XP001153039
KRECHL, J. ET AL.: "p-Substituted Benzamidinium Carboxylates", COLLECT. CZECH. CHEM. COMMUN., vol. 54, 1989, pages 2415 - 2424, XP001153039
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