PRODUCTION OF ALUMINUM/HEAVY METAL COMPLEX MIXTURE
A process for preparing a mixed aluminium-heavy metal dyestuff complex, in which the amount of heavy metal present is 10-98% and that of aluminium is 2 to 90% comprising i) reacting the metal free dyestuff with less than a stoichiometric amount of a heavy metal compound followed by ii) reacting the...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A process for preparing a mixed aluminium-heavy metal dyestuff complex, in which the amount of heavy metal present is 10-98% and that of aluminium is 2 to 90% comprising i) reacting the metal free dyestuff with less than a stoichiometric amount of a heavy metal compound followed by ii) reacting the product with an aluminium compound in an amount to produce a stoichiometric excess of metal (calculated on all the metal present) to form a mixed aluminium-heavy metal complex. |
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