Cross-linked polyimide and method of making them
AssigneeGeneral Electric Company
InventorGary Yeager
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Abstract
A cross-linked polyimide is disclosed. The cross-linked polyimide includes a polyimide and at least one oxygenated hydrocarbon. The oxygenated hydrocarbon cross-links the polyimide. A porous cross-linked membrane is also disclosed. The porous cross-linked membrane includes a support structure and a cross-linked polyimide disposed on the support structure. The cross-linked polyimide includes a polyimide; and at least one oxygenated hydrocarbon cross-linking the polyimide. Also disclosed are methods of making the cross-linked polyimide and the porous cross-linked membrane.
Claims54
A cross-linked polyimide comprising:
- a polyimide;
- and
- at least one oxygenated hydrocarbon cross-linking the polyimide.
A method of making a cross-linked polyimide comprising:
- i) providing a polyimide and providing an oxygenated hydrocarbon for cross-linking the polyimide.
A porous cross-linked membrane comprising:
- a) a support structure;
- and
- b) a cross-linked polyimide disposed on the support structure, wherein the cross-linked polyimide comprises:
- a polyimide;
- and
- at least one oxygenated hydrocarbon cross-linking the polyimide.
The membrane of claim 30, wherein the oxygenated hydrocarbon comprises a plurality of oxygenated hydrocarbons.
A method of making a porous cross-linked membrane comprising:
- i) disposing a solution comprising a polyimide and a solvent onto a support structure;
- ii) providing an oxygenated hydrocarbon to the solution or support structure, wherein the oxygenated hydrocarbon cross-links the polyimide;
- and
- iii) at least partially removing the solvent to form a porous membrane comprising an oxygenated hydrocarbon.
Dependencies are inferred from the claim text.