摘要:
The invention concerns per(3,6-anhydro)cyclodextrin derivatives, their preparation and their use for separating polluting ions, for example, for human decontamination. Said derivatives correspond to one of the formulae (I) and (II) wherein one R at least represents the -OCH2COOH group and the other R 's, identical or different, correspond to one of the formulae: OH, OR , SH, SR , OCOR , NH2, NHR , NR R , CONH2, CONHR , CONR R , CN, COOR , COOH and R , wherein: R and R , identical or different, represent a saturated or unsaturated hydrocarbon, aliphatic or aromatic group, capable of comprising one several heteroatoms selected among O, S and N; and n is equal to 6, 7 or 8.
摘要:
The invention concerns a method for fixing or separating ions, in particular of lead, using per(3,6-anhydro) cyclodextrin derivatives, which consists in contacting the medium containing the ions to be fixed or separated, with a per(3,6-anhydro)cyclodextrin derivative of formula (I) and (II) in which at one R represents OCH3, the other R representing OCH3, OH or other groups, for the complexation of the ions. Preferably, for fixing lead the derivative corresponds to formula (I) with n = 6 and all the R = OCH3.
摘要:
The invention concerns per (3,6-anhydro) cyclodextrin derivatives comprising in C2 at least one carbamate group, polymers thereof, their preparation and their use for separating anion contaminants, such as CrO4 , Cr2O7 , MnO4 anions.
摘要:
The invention concerns per(3,6-anhydro)cyclodextrin derivatives, their preparation and their use for separating polluting ions, for example, for human decontamination. Said derivatives correspond to one of the formulae (I) and (II) wherein one R1 at least represents the -OCH¿2?COOH group and the other R?1¿'s, identical or different, correspond to one of the formulae: OH, OR2, SH, SR?2, OCOR2, NH¿2, NHR?2, NR2R3¿, CONH¿2?, CONHR?2, CONR2R3¿, CN, COOR2, COOH and R2, wherein: R?2 and R3¿, identical or different, represent a saturated or unsaturated hydrocarbon, aliphatic or aromatic group, capable of comprising one several heteroatoms selected among O, S and N; and n is equal to 6, 7 or 8.
摘要:
The invention concerns a method for fixing or separating ions, in particular of lead, using per(3,6-anhydro) cyclodextrin derivatives, which consists in contacting the medium containing the ions to be fixed or separated, with a per(3,6-anhydro)cyclodextrin derivative of formula (I) and (II) in which at one R1 represents OCH¿3?, the other R?1¿ representing OCH¿3?, OH or other groups, for the complexation of the ions. Preferably, for fixing lead the derivative corresponds to formula (I) with n = 6 and all the R?1¿ = OCH¿3?.