Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1981-09-04
1984-05-15
Kyle, Deborah L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210688, 556400, 556424, 423 6, 4236585, B01D 1504, C02F 142, C08L 8306, C07F 710
Patent
active
044486944
ABSTRACT:
What is disclosed are novel metal chelating agents which are bonded to inorganic substrates to immobilize them. An example of such a metal chelating agent is (CH.sub.3 O).sub.3 Si(CH.sub.2).sub.3 NH(CH.sub.2 CH.sub.2 NH).sub.2 (CH.sub.2).sub.3 Si(OCH.sub.3). An example of an inorganic substrate is a silica gel.
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Chem. Abstr. #91:108,695y, Dvorak, et al., "Carbofunctional Organosilicon Derivatives of Tetraethylenepentamine", Czech Patent No. 177,563, 3/15/79, vol. 91, 1979.
Leyden, D. E., et al., Analytical Chemistry, vol. 47 (Aug. 1975), pp. 1612-1617.
Leyden, D. E., et al. "Structural Studies of Immobilized Ethylenediamine as a Concentrating Agent for Molybdate and Tungstate," Anal. Chim. Acta., vol. 100 (1978), pp. 845-854.
Dow Corning Corporation
Kyle Deborah L.
McKellar R. L.
Thexton Matthew A.
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