Hollow fiber carbon molecular sieve membrane and preparation and use thereof
US-2015053079-A1 · Feb 26, 2015 · US
Polyimide-based macromolecular compound and gas-separation asymmetrical hollow-fibre membrane comprising the same
US9511320B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9511320-B2 |
| Application number | US-201514687353-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 15, 2015 |
| Priority date | Oct 15, 2012 |
| Publication date | Dec 6, 2016 |
| Grant date | Dec 6, 2016 |
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- Title
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Abstract
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The present invention relates to a polyimide-based macromolecular compound which is produced by using DOCDA and one or more diamines selected from the group consisting of MDA, ODA, PDA, TDA, TrMPD, TeMPD and MBCA; and a gas-separation asymmetrical hollow-fiber membrane comprising the same. The polyimide-based macromolecular compound according to the present invention can advantageously be used in the production of a gas-separation hollow-fiber membrane having an asymmetrical structure since the said compound is highly viscous due to a high molecular weight in addition to having outstanding gas permeability and high selectivity while having excellent high heat resistance, chemical resistance, and mechanical properties and being outstandingly soluble in polar organic solvents.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for separating one or more gas from mixed gas using an asymmetrical hollow-fibre membrane comprising a polyimide-based macromolecular compound represented by the below formula 1: (In the formula 1, Ar is selected from the group consisting of and n is an integer of 50˜150). 2. The method for separating the gas according to claim 1 , wherein the mixed gas is a mixture of one or more gas selected from the group consisting of CO 2 , CH 4 , N 2 and O 2 . 3. The method for separating the gas according to claim 1 , wherein the separated gas is methane if the mixed gas comprises CO 2 /CH 4 or N 2 /CH 4 . 4. The method for separating the gas according to claim 1 , wherein the separated gas is methane if the mixed gas comprises CO 2 /N 2 or O 2 /N 2 . 5. The method for separating gas according to claim 1 , wherein the polyimide-based macromolecular compound represented by formula 1 above is prepared by the step of inducing polycondensation of the dianhydride compound represented by formula 2 and one or more monomer compounds selected from the group consisting of the diamine compounds represented by formula 3˜formula 10 in the presence of metacresol at the temperature range of 150˜203° C.:
Assignees
Inventors
Classifications
Operations & Transport · mapped topic
Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors · CPC title
Tubular films, sleeves · CPC title
Details relating to the spinning process · CPC title
Thermoplastic polyimides, e.g. polyesterimides, PEI, i.e. polyetherimides, or polyamideimides; Derivatives thereof · CPC title
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- What does patent US9511320B2 cover?
- The present invention relates to a polyimide-based macromolecular compound which is produced by using DOCDA and one or more diamines selected from the group consisting of MDA, ODA, PDA, TDA, TrMPD, TeMPD and MBCA; and a gas-separation asymmetrical hollow-fiber membrane comprising the same. The polyimide-based macromolecular compound according to the present invention can advantageously be used …
- Who is the assignee on this patent?
- Korea Res Inst Chemical Tech
- What technology area does this patent fall under?
- Primary CPC classification B01D53/228. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 06 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).