Title:
METHOD FOR PRODUCING COLLOIDAL COPPER COMPOUNDS AND USES THEREOF
Document Type and Number:
WIPO Patent Application WO2002075007
Kind Code:
A3
Abstract:
The invention relates to stable colloidal copper solutions which are prepared from purified copper sulphate solutions. Said copper sulphate is purified by adding an oxidising agent and adding phosphoric acid or a phosphate ion in order to precipitate the iron or aluminium. A colloidal solution is produced by adjusting the pH. A solid salt is obtained from the colloidal solution by mixing the colloidal solution with a water-miscible organic solvent, such as methanol or acetone. Said colloidal copper solutions have been shown to be effective fungicides against fusarium.
Inventors:
HUATO JULIO (MX)
OGURA TETSUYA (MX)
OGURA TETSUYA (MX)
Application Number:
PCT/MX2002/000022
Publication Date:
November 28, 2002
Filing Date:
March 20, 2002
Export Citation:
Assignee:
DERMET S A DE C V (MX)
HUATO JULIO (MX)
OGURA TETSUYA (MX)
HUATO JULIO (MX)
OGURA TETSUYA (MX)
International Classes:
A01N59/20; C01G3/10; (IPC1-7): A01N55/02
Domestic Patent References:
| WO1996010918A1 | 1996-04-18 |
Foreign References:
| US5004562A | 1991-04-02 | |||
| US4681630A | 1987-07-21 |
Other References:
DATABASE CAPLUS [online] NGUYEN ET AL.: "Influence of critic acid and pH on the zeta potential of Cu(II) and Cr(III) hydroxide sols", XP002956138, accession no. STN Database accession no. 1997:526861
DATABASE CAPLUS [online] CASALE: "New remedies against vine disease", XP002956139, accession no. STN Database accession no. 1938:36846
DATABASE CAPLUS [online] CASALE: "New remedies against vine disease", XP002956139, accession no. STN Database accession no. 1938:36846
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