| abstract |
WATER-INSOLUBLE EXTRACTION COMPOSITION INCLUDING: i) AN ALDOXIMA EXTRACTION AGENT, SAID ALDOXIMA BEING A HYDROXY ARYL ALDOXIMA OF FORMULA (I) WHERE "a" IS FROM 1 TO 4, R IS AN ALIPHATIC CATURED GROUP C1-SAT25 OR AN ETHYLENICALLY INSATURATED ALIPHATIC GROUP C3-C25, WHEREAS Ra IS C3-C25. THE EXTRACTION AGENT CAN BE 2-HYDROXY-5-HEPTILBENZALDOXIMA, 2-HYDROXY-5-OCTIL-BENZALDOXIMA, 2-HYDROXI-5-NONYLBENZALDOXIMA AND 2-HYDROXI-5-DODECILBENZALDO; ii) AN EQUILIBRIUM MODIFIER, IN AN AMOUNT EFFECTIVE TO PROVIDE A TRANSFER OF NET COPPER GREATER THAN THAT ACHIEVED IN THE ABSENCE OF IT, WHICH CONTAINS UP TO C36, WHICH MAY BE ESTERS AND ALCOHOLS (EXCEPTING ALCANOLS AND BRANCHES OF LESS THAN ALCANOLS UP TO C30 AND HAVE A RATIO OF METHYL GROUPS TO NON-METHYL GROUPS GREATER THAN 1.5), POLYESTERS, ETHERS (EXCEPT NONYL ANISOL), ESTER-ETHERS, OXYMES, KETONES, NITRILES, CARBONATES, AMIDES, SULFOXIDES, SALTS QUATERNARY AMMONIUM COMPOUNDS; iii) APPROXIMATELY 20% BY WEIGHT OF A KINETIC ADDITIVE. THE MOLAR RATIO FROM MODIFIER TO ALDOXIMA RANGES BETWEEN 0.2 AND 1.5 |