Crosslinked polymer, method for producing the same, molecular sieve composition and material separation membranes

Patent metadata

Field	Value
Publication number	US-10076728-B2
Application number	US-201515121637-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Feb 27, 2014
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

The present invention provides a process for thermal crosslinking of polymers of intrinsic microporosity (PIMs) by heat treatment of PIMs under controlled oxygen concentration.

First claim

The invention claimed is:

1. A process for thermal crosslinking of polymers of intrinsic microporosity (PIMs) by heat treatment of PIMs at a temperature of 350 to 450° C. under a controlled oxygen concentration of 10 to 200 ppm.

2. The process according to claim 1 , followed by heat treatment in inert atmosphere or high vacuum.

3. A crosslinked polymer of intrinsic microporosity (PIM) produced by the process according to claim 1 .

4. A molecular sieve composition comprising the crosslinked polymer according to claim 3 and a porous or nonporous filler.

5. The composition according to claim 4 , wherein said filler is selected from the group consisting of metal-organic frameworks (MOFs), zeolitic imidazolate frameworks (ZIFs), inorganic molecular sieves (zeolites), coordination organic polymers (COFs) and porous organic cages (POCs).

6. The composition according to claim 4 for use as materials for membrane-based gas separation, hydrocarbons and vapour separation, materials for adsorbents, materials for catalysts supports, materials for ionic conductive matrix, or materials for sensors.

7. The composition according to claim 4 , wherein said filler is selected from the group consisting of nanoparticles made of silica and titanium oxide and other inorganic materials.

8. A material separation membrane comprising the crosslinked polymer according to claim 3 and a porous or nonporous filler.

9. A material separation membrane comprising the polymer according to claim 3 and a porous or nonporous filler, wherein the membrane is for use in nitrogen separation from air, oxygen enrichment from air, hydrogen separation from nitrogen and methane, carbon dioxide separation from natural gas, natural gas separation, olefin/paraffin separation, or carbon dioxide separation from flue gas.

10. The material separation membrane according to claim 8 , wherein the membrane is for separating carbon dioxide, hydrogen, carbon monoxide, oxygen, nitrogen, hydrocarbons having 1 to 4 carbon atoms, noble gases, hydrogen sulfide, ammonia, sulfur oxides, nitrogen oxides, siloxanes, water vapor, or organic vapor.

11. The process according to claim 1 , wherein the polymers of intrinsic microporosity (PIMs) is PIM-1.

Assignees

• Univ Kyoto

Inventors

• Song Qilei
• Sivaniah Easan

Classifications

• C08J2379/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title

• B01D69/125

  In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction · CPC title

• B01D71/72 Primary

  Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of the groups B01D71/46 - B01D71/70 {and B01D71/701 - B01D71/702} · CPC title

• B01D2323/30

  Cross-linking · CPC title

• B01D2257/504

  Carbon dioxide · CPC title