1. WO2026085614 - CHARGE SWITCHABLE ION EXCHANGE RESIN, METHODS OF MANUFACTURE AND USE THEREOF

Publication Number WO/2026/085614

Publication Date 30.04.2026

International Application No. PCT/CA2025/051391

International Filing Date 21.10.2025

IPC

C08L 33/14 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
33	Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
04	Homopolymers or copolymers of esters
14	of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen

B01J 39/18 2017.1

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
39	Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
08	Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
16	Organic material
18	Macromolecular compounds

B01J 41/12 2017.1

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR 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
12	Macromolecular compounds

C08J 5/20 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J	WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5	Manufacture of articles or shaped materials containing macromolecular substances
20	Manufacture of shaped structures of ion-exchange resins

C08L 33/02 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
33	Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
02	Homopolymers or copolymers of acids; Metal or ammonium salts thereof

C08L 33/24 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
33	Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
24	Homopolymers or copolymers of amides or imides

View more classifications

C08L 33/14 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
33	Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
04	Homopolymers or copolymers of esters
14	of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen

B01J 39/18 2017.1

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
39	Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
08	Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
16	Organic material
18	Macromolecular compounds

B01J 41/12 2017.1

B	PERFORMING OPERATIONS; TRANSPORTING
01	PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR 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
12	Macromolecular compounds

C08J 5/20 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J	WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5	Manufacture of articles or shaped materials containing macromolecular substances
20	Manufacture of shaped structures of ion-exchange resins

C08L 33/02 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
33	Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
02	Homopolymers or copolymers of acids; Metal or ammonium salts thereof

C08L 33/24 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
33	Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
24	Homopolymers or copolymers of amides or imides

C08L 101/02 2006.1

C	CHEMISTRY; METALLURGY
08	ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L	COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
101	Compositions of unspecified macromolecular compounds
02	characterised by the presence of specified groups

View less classifications

Applicants

• SOCPRA SCIENCES ET GÉNIE S.E.C. [CA]/[CA]

Inventors

• FARNIA, Farhad
• ZHAO, Yue
• YU, Youngguen
• BEN KMICHA, Mohamed Azmi
• ABBASPOURRAD, Alireza
• CHEN, Yiming
• LOPEZ MUNOZ, Jose Roberto

Agents

• LAVERY, DE BILLY, LLP

Priority Data

63/710,137

22.10.2024

US

Publication Language English (en)

Filing Language English (en)

Designated States

View all

AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CV, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IQ, IR, IS, IT, JM, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, MG, MK, MN, MU, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UY, UZ, VC, VN, WS, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, CV, GH, GM, KE, LR, LS, MU, MW, MZ, NA, RW, SC, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

Hide all

Title

(EN) CHARGE SWITCHABLE ION EXCHANGE RESIN, METHODS OF MANUFACTURE AND USE THEREOF

(FR) RÉSINE ÉCHANGEUSE D'IONS À CHARGE COMMUTABLE, PROCÉDÉS DE FABRICATION ET UTILISATION ASSOCIÉS

Abstract

(EN) There is provided a charge switchable ion exchange (IX) resin comprising solid microparticles made of a crosslinked copolyelectrolyte, wherein the copolyelectrolyte is a reversible positive-to-neutral-to-negative charge switchable copolyelectrolyte comprising repeat units (A) bearing a positively ionizable weak base functional group and repeat units (B) bearing a negatively ionizable weak acid functional group. A method for manufacturing this resin is also provided. Methods for capturing ions from a feed, exchanging ions in a feed, for concentrating a contaminant by capturing and accumulating ions of said contaminant and then releasing and electrostatically repulsing said ions, and for regenerating the resin are also provided.

(FR) L'invention concerne une résine échangeuse d'ions (IX) à charge commutable comprenant des microparticules solides constituées d'un copolyélectrolyte réticulé, le copolyélectrolyte étant un copolyélectrolyte commutable à charge positive-neutre-négative réversible comprenant des unités de répétition (A) portant un groupe fonctionnel de base faible ionisable positivement et des unités de répétition (B) portant un groupe fonctionnel acide faible ionisable négativement. L'invention concerne également un procédé de fabrication de cette résine. L'invention concerne également des procédés de capture d'ions à partir d'une charge, d'échange d'ions dans une charge, de concentration d'un contaminant par capture et accumulation d'ions dudit contaminant, puis de libération et de répulsion électrostatique desdits ions, et de régénération de la résine.

Latest bibliographic data on file with the International Bureau

The publication of an international application under the Patent Cooperation Treaty in PATENTSCOPE (which constitutes an element of the Gazette) does not imply the expression of any opinion whatsoever on the part of the International Bureau of WIPO concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.