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1. (WO2001038228) A METHOD FOR ANION-EXCHANGE ADSORPTION AND THIOETHER ANION-EXCHANGERS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/038228 International Application No.: PCT/EP2000/011606
Publication Date: 31.05.2001 International Filing Date: 22.11.2000
Chapter 2 Demand Filed: 08.06.2001
IPC:
B01D 15/32 (2006.01) ,B01J 41/08 (2006.01) ,B01J 41/20 (2006.01) ,C02F 1/42 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
15
Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
08
Selective adsorption, e.g. chromatography
26
characterised by the separation mechanism
32
Bonded phase chromatography, e.g. with normal bonded phase, reversed phase or hydrophobic interaction
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
41
Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
08
Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
41
Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
20
Anion exchangers for chromatographic processes
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
42
by ion-exchange
Applicants:
BELEW, Makonnen [SE/SE]; SE (UsOnly)
JOHANSSON, Bo-Lennart [SE/SE]; SE (UsOnly)
MALOISEL, Jean-Luc [FR/SE]; SE (UsOnly)
AMERSHAM BIOSCIENCES AB [SE/SE]; Bjorkgatan 30 S-751 84 Uppsala, SE (AllExceptUS)
Inventors:
BELEW, Makonnen; SE
JOHANSSON, Bo-Lennart; SE
MALOISEL, Jean-Luc; SE
Agent:
ROLLINS, Anthony, John ; Nycomed Amersham PLC Amersham Laboratories White Lion Road Amersham, Buckinghamshire HP7 9LL, GB
Priority Data:
9904197-222.11.1999SE
Title (EN) A METHOD FOR ANION-EXCHANGE ADSORPTION AND THIOETHER ANION-EXCHANGERS
(FR) PROCEDES D'ADSORPTION D'ECHANGE ANIONIQUE ET ECHANGEURS ANIONIQUES A LIAISON THIOETHER
Abstract:
(EN) A method for the removal of a substance, which has a negative charge and which and which is present in an aqueous liquid (I). The method comprises the steps of: (i) contacting the liquid with an anion-exchanger (1) that comprises mixed mode anion-exchanging ligands in which there is a positively charged nitrogen allowing binding of the substance to the anion-exchanger; and (ii) desorbing said substance from said anion-exchanger. The characteristic feature is that (A) the mixed mode ligands have a thioether linkage within a distance of 1-7 atoms from their positively charged atom, and (B) the anion-exchanger (1) (i) is capable of binding the substance of interest in an aqueous reference liquid (II) at an ionic strength corresponding to 0.25 M NaCl, and (ii) permits in the pH interval 2-12 a maximal breakthrough capacity for the substance which is ≥200 % of the breakthrough capacity of the substance for Q-Sepharose Fast Flow (anion-exchanger 2).
(FR) L'invention concerne l'élimination d'une substance possédant une charge négative et présente dans un liquide aqueux (I). Le procédé consiste i) à mettre le liquide en contact avec un échangeur anionique (1) comprenant des ligands d'échange anionique en mode mixte dans lesquels un atome d'azote chargé positivement permet de lier ladite substance et ledit échangeur anionique; et ii) à désorber cette substance de l'échangeur anionique. Le procédé est caractérisé en ce que A) les ligands d'échange anionique en mode mixte présentent une liaison thioéther située à une distance de 1-7 atomes de leur atome chargé positivement, et B) en ce que l'échangeur anionique (1) (i) peut se lier à la substance considérée dans un liquide de référence aqueux (II) selon une force ionique correspondant à 0,25 M NaCl, et (ii) permet d'obtenir dans l'intervalle pH compris entre 2 et 12 une capacité de saturation maximale de la substance qui représente ≥200 % de la capacité de saturation de la substance permettant l'écoulement rapide de Sepharose Q (échangeur d'anions 2).
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)