Invention Grant
- Patent Title: Skinned, asymmetric poly(phenylene ether) co-polymer membrane; gas separation unit, and preparation method thereof
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Application No.: US15303562Application Date: 2015-04-30
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Publication No.: US10080996B2Publication Date: 2018-09-25
- Inventor: Albin Peter Berzinis , Rachel Elizabeth Halbfinger , Matias Bikel , Pooja Bajaj
- Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
- Applicant Address: NL Bergen op Zoom
- Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL Bergen op Zoom
- Agency: Cantor Colburn LLP
- International Application: PCT/US2015/028492 WO 20150430
- International Announcement: WO2015/168392 WO 20151105
- Main IPC: B01D71/52
- IPC: B01D71/52 ; B01D53/22 ; B01D67/00 ; B01D63/02 ; B01D63/08 ; B01D69/08 ; B01D63/10 ; B01D69/06 ; B01D71/76 ; B01D69/02
Abstract:
An asymmetric membrane having a substantially non-porous surface layer is made by a method including: dissolving a poly(phenylene ether) copolymer in a solvent mixture including a first solvent and a second solvent to provide a membrane-forming composition; and phase-inverting the membrane forming composition in a first non-solvent to form the membrane comprising a substantially non-porous surface layer. The first solvent is a water-miscible polar aprotic solvent, and the second solvent is a polar solvent having two to eight carbon atoms.
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