Synthetic organic polymers for the selective flocculation of tit

Details Synthetic organic polymers for the selective flocculation of tit Synthetic organic polymers for the selective flocculation of tit

1986-01-13

1987-10-06

Wax, Robert A.

Compositions

Physical separation agents

252180, 526263, 526268, 526313, C09K 300

Patent

active

046981713

ABSTRACT:
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.

REFERENCES:
patent: 3156720 (1964-11-01), Goldberg et al.
patent: 3180851 (1965-04-01), Goldberg et al.
patent: 3292780 (1966-12-01), Frommer et al.
patent: 3409589 (1968-11-01), Kine
patent: 3445566 (1969-05-01), Skoultchi et al.

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