Consiglio Nazionale Delle Ricerche

Vincenzo Bertini

Angela De Munno

Anna M Marabini

Maria Barbaro

Barbara Bertocci

Franca Buffoni

Marco Pocci

Francesco Lucchesini

Selective inhibitors of benzylaminoxidases, said inhibitors consisting of compounds of the general formula I ##STR1## wherein X is a group C--R.sup.4 or a nitrogen atom, R.sup.1 and R.sup.2, which can be the same or different from each other, represent hydrogen, hydroxyl groups, alkoxyl groups, or alkyl, alkenyl, hydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl, hydroxyalkoxyl, alkoxyalkoxyl, hydroxyalkoxyalkoxyl, phenoxyl or phenoxyalkyl groups or their substitution derivatives in the phenoxyl group, provided that no more than one of the same be hydrogen, and one or more of the symbols R.sup.3, R.sup.4 or R.sup.5 are hydrogen atoms or alkyl or hydroxyl or alkoxyl or hydroxyalkyl or hydroxyalkoxyl or hydroxyalkoxyalkyl or haloalkyl or carbonyl or carboxylic or ester or amido or nitrile or sulfonic groups or halogen atoms or nitro groups.

Selective inhibitors of benzylaminoxidases with respect to other

Flocculating agents for the selective flocculation of ultrafine granulometry titanium and iron ores suspended in water, said agents being made up of polymeric or copolymeric compounds containing as the monomeric units the monomers of formula I ##STR1## wherein R.sup.1 and R.sup.2, which can be the same or different, represent a --O--CHR.sup.5 --O--bridge, or two hydroxyl groups which can also be in the form of their ether or ester derivatives, and in which formula one of the symbols R.sup.3, R.sup.4 or R.sup.5 corresponds to an atomic group containing, at a position variously spaced from the substitution site, a polymerizable system which is preferably an olefinic system activated with respect to polymerization reactions, whereas the other symbols, which can be the same or different, can be hydrogen atoms or alkyl, aryl, hydroxyl, alkoxyl, hydroxyalkyl, alkoxyalkyl, haloakyl, carbonyl, carboxyl, ester, amido, nitrilo, or sulfonic groups, or halogen atoms or nitro groups. The copolymerizable comonomers which can be copolymerized with said monomers of formula I are made up of olefinic compounds which are active towards polymerization reactions and contain groups whose hydrophilic character changes with the pH values.

Synthetic organic polymers for the selective flocculation of titanium

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Vincenzo Bertini