GAS SEPARATION COMPOSITE MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION DEVICE, GAS SEPARATION METHOD, AND METHOD OF PRODUCING GAS SEPARATION COMPOSITE MEMBRANE

• US 20160310911A1
• Filed: 07/05/2016
• Published: 10/27/2016
• Est. Priority Date: 02/12/2014
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: NAGAI, Takayasu, SAWAI, Daisuke, SANO, Satoshi
• Granted Patent: US 10,226,743 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2323/081 Heating
• CPC Class Codes: B01D 2323/30 Cross-linking
• CPC Class Codes: B01D 2323/64 Use of a temporary support
• CPC Class Codes: B01D 2325/04 Characteristic thickness
• CPC Class Codes: B01D 53/228 characterised by specific membranes
• CPC Class Codes: B01D 65/003 Membrane bonding or sealing
• CPC Class Codes: B01D 67/0006 by chemical reactions in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125
• CPC Class Codes: B01D 69/12 Composite membranes; Ultra-thin membranes
• CPC Class Codes: B01D 69/1213 Laminated layers
• CPC Class Codes: B01D 71/64 Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: B32B 2307/724 Permeability to gases, adsorption
• CPC Class Codes: B32B 2309/02 Temperature
• CPC Class Codes: B32B 37/06 characterised by the heating method
• CPC Class Codes: B32B 37/1292 selectively, e.g. in stripes, in patterns B32B37/0076 takes precedence
• CPC Class Codes: B32B 38/10 Removing layers, or parts of layers, mechanically or chemically
• CPC Class Codes: C08G 73/10 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• CPC Class Codes: C08G 73/1007 from tetracarboxylic acids or derivatives and diamines
• CPC Class Codes: C08G 73/1039 comprising halogen-containing substituents
• CPC Class Codes: C08G 73/1042 Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
• CPC Class Codes: C08G 73/1067 : Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
• CPC Class Codes: Y02C 20/40 : of CO2
• CPC Class Codes: Y02P 20/151 : Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Abstract

Provided are a gas separation composite membrane including a gas separation layer which is formed to include a polyimide compound on the upper side of a gas permeating support, in which the solubility of the polyimide compound in dimethylacetamide at 20° C. is 20 mg/100 g or less, and the thickness of the gas separation layer is 0.1 μm or greater and less than 5.0 μm, a method of producing the same, a gas separation module using the gas separation composite membrane, a gas separation device, and a gas separation method.

Claims

1. A gas separation composite membrane comprising:

a gas separation layer which is formed to include a polyimide compound on the upper side of a gas permeating support,

wherein the solubility of the polyimide compound in dimethylacetamide at 20°

C. is 20 mg/100 g or less, and

the thickness of the gas separation layer is 0.1 μ

m or greater and less than 5.0 μ

m.

2. The gas separation composite membrane according to claim 1, further comprising an adhesive layer on at least a portion between the gas separation layer and the gas permeating support.

3. The gas separation composite membrane according to claim 1, wherein the gas permeating support is an organic porous support.

4. The gas separation composite membrane according to claim 1, wherein the gas separation layer is subjected to a heat treatment at 200°

C. or higher during a process of preparing the gas separation layer.

5. The gas separation composite membrane according to claim 1, wherein the gas separation composite membrane allows carbon dioxide to selectively permeate from gas containing carbon dioxide and methane.

6. A gas separation module comprising the gas separation composite membrane according to claim 1.

7. A gas separation device comprising the gas separation module according to claim 6.

8. A gas separation method comprising:

allowing carbon dioxide to selectively permeate from gas containing carbon dioxide and methane using the gas separation membrane according to claim 1.

9. A method of producing a gas separation composite membrane according to claim 1, comprising the following processes (a) to (c);

(a) a process of forming a film which is formed to include an insoluble polyimide compound on a heat-resistant support by applying a heat treatment at 200°

C. or greater to the entire heat-resistant support on which a film formed to include a polyimide compound that is insolubilized through a heat treatment at 200°

C. or higher and a polyimide precursor is formed;

(b) a process of bonding a gas permeating support to the film which is formed on the heat-resistant support and formed to include the insoluble polyimide compound; and

(c) a process of peeling off the heat-resistant support.

10. The production method according to claim 9, wherein the film which is formed on the heat-resistant support and formed to include a polyimide compound insolubilized through the heat treatment at 200°

C. or higher and a polyimide precursor is prepared by coating the heat-resistant support with a solution containing the polyimide compound insolubilized through the heat treatment at 200°

C. or higher and the polyimide precursor and drying the heat-resistant support.

11. The production method according to claim 9, wherein the film which is formed on the heat-resistant support and formed to include a polyimide compound insolubilized through the heat treatment at 200°

C. or higher and a polyimide precursor is prepared by bonding the heat-resistant support to a film, formed by coating a substrate with a solution containing the polyimide compound insolubilized through the heat treatment at 200°

C. or higher and the polyimide precursor and drying the substrate, and peeling off the base substrate.

12. The production method according to claim 9, wherein the gas permeating support is an organic porous support.

13. The production method according to claim 9, wherein the process (b) is a process of bonding the gas permeating support to the film which is formed on the heat-resistant support and formed to include an insoluble polyimide compound after double-sided tape or an adhesive is provided on at least a portion of the film.

14. The production method according to claim 9, wherein the entire peeling process is performed in water.

15. The production method according to claim 9, wherein the polyimide compound insolubilized through the heat treatment at 200°

C. or higher includes a repeating unit represented by the following Formula (I);

16. The production method according to claim 9, wherein the polyimide precursor insolubilized through the heat treatment at 200°

C. or higher includes a repeating unit represented by the following Formula (II);