Use of a cyclodextrin polycondensate or a composition comprising such a polycondensate, as a capturing agent
AssigneeBiostart
InventorsBertrand Duval, Fabrice Grenard, Jean-Baptiste Loiseau, Bernard Rougier
Life of this patent
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Abstract
The use of a cyclodextrin polycondensate or a composition comprising at least one cyclodextrin polycondensate, as an agent for capturing at least one substance chosen from a metal element and an organic molecule having an octanol/water partition coefficient, referred to as Log Kow, greater than or equal to 2, the cyclodextrin polycondensate being obtained by reacting the following compounds (A) to (C): (A) at least one cyclodextrin, (B) at least one linear, branched or cyclic polycarboxylic acid, that is saturated, unsaturated or aromatic, and (C) at least one ethylene vinyl alcohol copolymer (EVOH).
Claims15
A method of sequestering a pollutant, comprising:
- contacting said pollutant with a cyclodextrin(s) polycondensate, or a composition comprising at least one cyclodextrin(s) polycondensate,
- wherein the pollutant comprises at least one substance chosen from a metal element at the degree of oxidation 0 and an organic molecule selected from the group consisting of diuron, carbamazepine, polychlorinated biphenyls, phthalates and benzopyrene, and
- wherein the cyclodextrin(s) polycondensate is obtained by reacting the following compounds (A) to (C):
- (A) at least one cyclodextrin,
- (B) a saturated aliphatic polycarboxylic acid that is linear or branched, and
- (C) at least one ethylene vinyl alcohol copolymer (EVOH).
Dependencies are inferred from the claim text.