Gas separation membrane
AssigneeNtnu Technology Transfer AS
InventorsMarius Sandru, Taek-Joong Kim, May-Britt Hägg
Life of this patent
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Abstract
A membrane suitable for separating a gas from a gas mixture comprising a non cross-linked PVAm having a molecular weight of at least Mw 100,000 carried on a support wherein after casting onto the support, said PVAm has been heated to a temperature in the range 50 to 150° C., e.g. 80 to 120° C.
Claims18
A membrane suitable for separating a gas from a gas mixture comprising a non cross-linked polyvinlyamine (PVAm) having a molecular weight of at least 50,000 daltons carried on a support.
(canceled)
A membrane suitable for separating a gas from a gas mixture comprising a PVAm carried on a, polytetrafluoroethylene (PTFE), polypropylene (PP), sulphonated polysulfone (PSf), polyvinylidene fluoride (PVDF), and related block copolymers, polyimide (PI), polyether imide (PEI), aliphatic polyamide, polyetheretherketone (PEEK), or polyphenylene oxide (PPO) support.
A membrane suitable for separating a gas from a gas mixture comprising a PVAm carried on a support wherein a carbon dioxide permeable layer separates the PVAm from the support.
A process for the formation of a membrane suitable for separating a gas from a gas mixture comprising:
- (I) obtaining a PVAm;
- (II) hydrolyzing said PVAm under conditions of acid or base to form a pre-treated PVAm;
- (III) forming a solution of said pre-treated PVAm in a solvent;
- (IV) casting said solution, to form a composite membrane;
- and optionally
- (V) thermal treating or cross-linking said membrane.
Dependencies are inferred from the claim text.