Monolayer, composite, gas separation material, filter, gas separation device and method for manufacturing composite
US-12128366-B2 · Oct 29, 2024 · US
Anti-fouling coatings with star polymers for filtration membranes
US9931598B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9931598-B2 |
| Application number | US-201514623352-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 16, 2015 |
| Priority date | Feb 16, 2015 |
| Publication date | Apr 3, 2018 |
| Grant date | Apr 3, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A porous membrane with a molecular weight cut-off (MWCO) greater than about 10 kDa, and a coating on at least a portion of a major surface of the porous membrane. The coating includes a star polymer having a hydrophobic core and hydrophilic arms, wherein the hydrophobic core contacts the porous membrane.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process of forming a monolayer of self-assembled star polymers on a porous membrane with a MWCO greater than 10 kDa, comprising: applying on a surface of the porous membrane an aqueous solution of star polymers, wherein the star polymers comprise the compound of Formula 1: wherein, in Formula 1, the core comprises a hydrophobic polymer chosen from polyolefins, polystyrene, poly(alkyl-methacrylate), polyacrylamide, polycarbonate and polyester; k is greater than or equal to about 6; n is greater than 10; a is greater than n; and X is selected from neutral hydrophilic species, zwitterionic species, charged hydrophilic species, and combinations of thereof; and draining excess of the aqueous solution of the star polymers to form a coated membrane. 2. The process of claim 1 , comprising air-drying the coated porous membrane. 3. The process of claim 2 , wherein the coated porous membrane is air-dried for less than about 30 seconds. 4. The process of claim 3 , comprising rinsing the coated porous membrane with water. 5. A porous filtration membrane with a MWCO greater than about 10 kDa, wherein a hydrophobic major surface of the filtration membrane contacts a hydrophilic coating comprising a monolayer of star polymers, wherein the star polymer in the hydrophilic coating comprises the compound of Formula 1: wherein, in Formula 1, the core comprises a hydrophobic polymer chosen from polyolefins, polystyrene, poly(alkyl-methacrylate), polyacrylamide, polycarbonate and polyester; k is greater than or equal to about 6; n is greater than 10; a is greater than n; and X is selected from neutral hydrophilic species, zwitterionic species, charged hydrophilic species, and combinations of thereof.
Assignees
Inventors
Classifications
Specific permeability or cut-off range · CPC title
Microfiltration · CPC title
- B01D69/10Primary
Supported membranes; Membrane supports · CPC title
Composite membranes; Ultra-thin membranes · CPC title
Physical treatment with compounds, e.g. swelling, coating or impregnation · CPC title
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Frequently asked questions
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- What does patent US9931598B2 cover?
- A porous membrane with a molecular weight cut-off (MWCO) greater than about 10 kDa, and a coating on at least a portion of a major surface of the porous membrane. The coating includes a star polymer having a hydrophobic core and hydrophilic arms, wherein the hydrophobic core contacts the porous membrane.
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification B01D69/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 03 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).