# US 10,870,090 B2 · Block copolymer, carbon dioxide gas separation membrane and method for manufacturing the same

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- Number: US 10,870,090 B2
- Document ID: US10870090B2
- Status: Granted
- Kind: B2
- Application number: 16/104,381
- Filed: 2018-08-17
- Published: 2019-10-31
- Granted: 2020-12-22
- Earliest claimed: 2018-04-27
- Assignees: Incheon University Industry Academic Cooperation Foundation
- Applicants: Incheon University Industry Academic Cooperation Foundation
- Inventors: Tae-Hyun Kim; Iqubal Hossain
- Web page: https://patentgrep.com/patent/US10870090B2

## CPC

- B01D 71/80: Block polymers
- B01D 53/228: {characterised by specific membranes}
- B01D 63/107: {Specific properties of the central tube or the permeate channel}
- B01D 71/64: Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
- C08G 73/0672: {with only one nitrogen atom in the ring}
- C08G 73/1039: {comprising halogen-containing substituents}
- C08G 73/1042: {Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds}
- C08G 73/1067: {Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound}
- C08G 73/1085: {Polyimides with diamino moieties or tetracarboxylic segments containing heterocyclic moieties}
- B01D 2257/504: Carbon dioxide
- Y02C 20/40: of CO2
- Y02P 20/151: Reduction of greenhouse gas [GHG] emissions, e.g. CO2
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The present disclosure relates to a block copolymer, a carbon dioxide separation membrane using the same and a method for preparing the same. The carbon dioxide separation membrane includes a copolymer represented by the following [Chemical Formula 1], and thus has excellent thermal, chemical and mechanical stabilities and shows high selectivity and permeability to carbon dioxide.

## Claims

### Claim 1

A block copolymer represented by the following Chemical Formula 2:
wherein x is an integer of 5-100;
y is an integer of 100-300; and
n is an integer of 5-150.

### Claim 2 (depends on 1)

The block copolymer according to claim 1, wherein the block copolymer represented by Chemical Formula 2 comprises the repeating units mixed at a ratio of x:y of 1:3-10.

### Claim 3 (depends on 2)

The block copolymer according to claim 2, wherein the ratio of x:y is 1:4-6.

### Claim 4 (depends on 1)

A carbon dioxide separation membrane comprising the block copolymer as defined in claim 1.

### Claim 5 (depends on 4)

A carbon dioxide separation membrane module comprising the carbon dioxide separation membrane as defined in claim 4.

### Claim 6 (depends on 5)

An apparatus for separating carbon dioxide which comprises the carbon dioxide separation membrane module as defined in claim 5, and a gas supplying unit for supplying a mixed gas containing at least carbon dioxide and water steam to the carbon dioxide separation membrane module.

### Claim 7

A method for manufacturing a carbon dioxide separation membrane, comprising the steps of:
(A) preparing a compound represented by the following [Chemical Formula 3];
(B) preparing a compound represented by the following [Chemical Formula 4]; and
(C) polymerizing the compound represented by [Chemical Formula 3] with the compound represented by [Chemical Formula 4] at a repeating unit ratio of 1:3-10 to obtain a block copolymer
wherein for Chemical Formula 3, each of R1 to R4 is a C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 heteroalkyl group, substituted or non-substituted C5-C14 aryl group or a substituted or non-substituted C4-C19 heteroaryl group containing N, S, O; and x is an integer of 5-100; and
wherein for Chemical Formula 4, each of R5 to R7 is a C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 heteroalkyl group, substituted or non-substituted C5-C14 aryl group or a substituted or non-substituted C4-C19 heteroaryl group containing N, S, O; and y is an integer of 100-300.

### Claim 8 (depends on 7)

The method for manufacturing a carbon dioxide separation membrane according to claim 7, wherein each substituent of the substituted aryl or substituted heteroaryl in R1 to R7 is a C1-C10 alkyl group, C1-C10 alkoxy group, C1-C10 alkylamino group, C1-C10 alkylsilyl group, C5-C14 aryl group, C4-C19 heteroaryl group containing N, S, O, cyano group or a halogen.