C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/56 (2006.01) C02F 1/68 (2006.01) C02F 11/14 (2006.01)
Patent
CA 2451425
The invention relates to a particular polymer which is derived from a copolymer polysaccharide formed by a main chain comprising similar or different anhydrohexose units and branches including at least one neutral or anionic anhydropentose and/or anhydrohexose unit. Moreover, the invention relates to the use of said polymer in the treatment of aqueous media, in particular the treatment of aqueous effluents containing heavy metals, the treatment of waste water, drinking water and for sludge conditioning. Said derivative polymer comprises one or more units bearing an oxime function at least at position C2.
L'invention est relative à l'utilisation pour le traitement de milieux aqueux, en particulier le traitement d'effluents aqueux contenant des métaux lourds, le traitement des eaux usées, des eaux potables ou pour le conditionnement de boues, d'un polymère particulier dérivé d'un polysaccharide copolymère formé d'une chaîne principale comprenant des unités anhydrohexoses semblables ou différentes, et de ramifications comprenant au moins une unité anhydropentose et/ou anhydrohexose neutre ou anionique, ledit polymère dérivé comprenant une ou plusieurs unités portant une fonction oxime au moins sur la position C2.
Bonnet-Gonnet Cecile
Fleury Etienne
Pescher Yvette
Rhodia Chimie
Robic
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