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

Patent metadata

Field	Value
Publication number	US-2016367948-A1
Application number	US-201515121637-A
Country	US
Kind code	A1
Filing date	Feb 27, 2015
Priority date	Feb 27, 2014
Publication date	Dec 22, 2016
Grant date	—

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

1 . A process for thermal crosslinking of polymers of intrinsic microporosity (PIMs) by heat treatment of PIMs under controlled oxygen concentration.

2 . The process according to claim 1 , wherein heat treatment is conducted at a temperature ranging from about 300 to about 500° C.

3 . The process according to claim 1 , wherein oxygen concentration is in the range of about 0-100 vol.

4 . The process according to claim 2 , which can be followed by heat treatment in inert atmosphere or high vacuum.

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

6 . A molecular sieve composition comprising the crosslinked polymer according to claim 5 and a porous or nonporous filler.

7 . The composition according to claim 6 , 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).

8 . The composition according to claim 6 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.

9 . The composition according to claim 6 , wherein said filler is selected from the group consisting of nanoparticles made of silica and titanium oxide and other inorganic materials.

10 . A material separation membrane comprising the crosslinked polymer according to claim 5 and a porous or nonporous filler.

11 . A material separation membrane comprising the polymer according to claim 5 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 such as propylene/propane, carbon dioxide separation from flue gas.

12 . The material separation membrane according to claim 10 , 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.

13 . The process according to claim 1 , wherein the heat treatment of PIMs at a temperature ranging from 350 to 450° C. and the controlled oxygen concentration is of 10 to 200 ppm.

14 . The process according to claim 13 , wherein the polymers of intrinsic microporosity (PIMs) is PIM-1.

Assignees

• Univ Kyoto

Inventors

• Song Qilei
• Sivaniah Easan

Classifications

• C08J9/36

  After-treatment (C08J9/22 takes precedence) · CPC title

• C08J2205/044

  Micropores, i.e. average diameter being between 0,1 micrometer and 0,1 millimeter · CPC title

• B01D67/0006

  by chemical reactions (in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125) · CPC title

• C08J2379/08

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

• C08J3/24

  Crosslinking, e.g. vulcanising, of macromolecules (mechanical aspects B29C35/00; crosslinking agents C08K) · CPC title