Water-treatment separating membrane of high flux having good chlorine resistance and method of manufacturing the same
US-9211507-B2 · Dec 15, 2015 · US
Method for manufacturing polyamide-based water-treatment separator having excellent permeation flux characteristics and water-treatment separator manufactured by same
US10479864B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10479864-B2 |
| Application number | US-201515511998-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 9, 2015 |
| Priority date | Sep 30, 2014 |
| Publication date | Nov 19, 2019 |
| Grant date | Nov 19, 2019 |
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- Title
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- Abstract
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Abstract
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The present invention relates to a method for manufacturing a water treatment separation membrane, the method including: forming an aqueous solution layer including an amine compound on a porous support; and bringing an organic solution including an acyl halide compound into contact with on the aqueous solution layer to form a polyamide active layer, in which the organic solution includes a non-polar solvent and an amphiphilic solvent having a boiling point of 120° C. or more, thereby improving a permeation flux, and a water treatment separation membrane manufactured by the manufacturing method.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing a water treatment separation membrane, the method comprising: forming an aqueous solution layer comprising an amine compound on a porous support; and bringing an organic solution comprising an acyl halide compound into contact with on the aqueous solution layer to form a polyamide active layer, wherein the organic solution comprises a non-polar solvent and an amphiphilic solvent having a boiling point of 120° C. or more, wherein the amphiphilic solvent comprises one or more selected from the group consisting of propylene glycol monomethyl ether acetate, dipropylene glycol monomethyl ether acetate, and 1,3-butanediol diacetate, and wherein the amphiphilic solvent is comprised in an amount of 0.05 vol % to 10 vol % based on a total volume of the organic solution. 2. The method of claim 1 , wherein the non-polar solvent is a hydrocarbon solvent having 6 to 13 carbon atoms.
Assignees
Inventors
Classifications
Specific permeability or cut-off range · CPC title
Polyamides, e.g. polyester-amides · CPC title
- B01D61/02Primary
Reverse osmosis; Hyperfiltration {; Nanofiltration} · CPC title
by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)} · CPC title
Support pretreatment · CPC title
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- What does patent US10479864B2 cover?
- The present invention relates to a method for manufacturing a water treatment separation membrane, the method including: forming an aqueous solution layer including an amine compound on a porous support; and bringing an organic solution including an acyl halide compound into contact with on the aqueous solution layer to form a polyamide active layer, in which the organic solution includes a non…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01D61/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 19 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).