Additives for boron rejection enhancement of a membrane
US-9687792-B2 · Jun 27, 2017 · US
Multilayer composite membrane
US10710028B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10710028-B2 |
| Application number | US-201816214159-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 10, 2018 |
| Priority date | Jun 21, 2018 |
| Publication date | Jul 14, 2020 |
| Grant date | Jul 14, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A multilayer composite membrane consists essentially of a porous support layer, an inorganic porous layer, a polymer porous layer, and a separation layer. The inorganic porous layer consists of inorganic particles and is disposed on the porous support layer. The polymer porous layer is disposed on the inorganic porous layer. The separation layer is disposed on the polymer porous layer.
First claim
Opening claim text (preview).
What is claimed is: 1. A multilayer composite membrane consisting essentially of the following layers: a porous support layer; an inorganic porous layer consisting of a plurality of inorganic particles and located on the porous support layer; a polymer porous layer located on the inorganic porous layer, the polymer porous layer has a porous structure connected to pores of the inorganic porous layer, wherein a thickness of the polymer porous layer is 30 microns to 60 microns; and a separation layer located on the polymer porous layer. 2. The composite membrane of claim 1 , wherein the porous support layer comprises a woven fabric or a non-woven fabric. 3. The composite membrane of claim 1 , wherein a material of the porous support layer comprises polypropylene, polyethylene terephthalate, polyamide, or a derivative thereof. 4. The composite membrane of claim 1 , wherein a thickness of the porous support layer is 30 microns to 130 microns. 5. The composite membrane of claim 1 , wherein a material of the inorganic particles comprises silicon nanoparticles, carbon nanotubes, graphene, zeolite, or a combination thereof. 6. The composite membrane of claim 1 , wherein a thickness of the inorganic porous layer is 3 microns to 10 microns. 7. The composite membrane of claim 1 , wherein a material of the polymer porous layer comprises polyacrylonitrile, polysulfone, polyether sulfone, polyvinylidene fluoride, or a derivative thereof. 8. The composite membrane of claim 1 , wherein a material of the separation layer comprises polyamide.
Assignees
Inventors
Classifications
- B01D69/1216Primary
Three or more layers · CPC title
by interfacial polymerisation · CPC title
Woven, non-woven or net mesh · CPC title
Forward osmosis or direct osmosis · CPC title
Polyamides, e.g. polyester-amides · CPC title
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Frequently asked questions
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- What does patent US10710028B2 cover?
- A multilayer composite membrane consists essentially of a porous support layer, an inorganic porous layer, a polymer porous layer, and a separation layer. The inorganic porous layer consists of inorganic particles and is disposed on the porous support layer. The polymer porous layer is disposed on the inorganic porous layer. The separation layer is disposed on the polymer porous layer.
- Who is the assignee on this patent?
- Ind Tech Res Inst
- What technology area does this patent fall under?
- Primary CPC classification B01D69/1216. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 14 2020 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).