Hoechst Aktiengesellschaft

Johann F Hanauer

Hans-Peter Rieck

Jochen M Quack

Hans-Jurgen Kalz

Kurt Bauer

Hans-Joachim Morawietz

Erich Hoffman

Armin Weiss

Adsorbents for polar organic compounds can be prepared by reacting 5-80% of an organic ammonium compound with 20-95% of a crystalline alkali metal phyllosilicate belonging to the group comprising phyllosilicates of the formula

Adsorbents based on phyllosilicic acids which have been modified so as

3-Alkoxypropylenimino-bis-(methylene phosphonic acids) of the formula ##STR1## wherein R is straight-chain or branched alkyl or alkenyl each having from 2 to 20, preferably 2 to 10, carbon atoms, aryl, preferably phenyl or aralkyl, preferably benzyl, and X is hydrogen, an alkali metal, alkaline earth metal, ammonium, alkylammonium or polyalkylenepolyammonium ion, preferably a sodium, potassium or ammonium ion, a process for their manufacture and their use as collector in the flotation of non-sulfidic ores.

3-Oxypropyleneimino-bis-(methylene phosphonic acids) and their salts,

Growing community of inventors

Eppstein, Germany

Johann F Hanauer