Degradable polymeric compositions and articles comprising same
US-2024425683-A1 · Dec 26, 2024 · US
Ultra-thin polymer film, and porous ultra-thin polymer film
US9938384B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9938384-B2 |
| Application number | US-201314383191-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2013 |
| Priority date | Mar 12, 2012 |
| Publication date | Apr 10, 2018 |
| Grant date | Apr 10, 2018 |
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- Title
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Abstract
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The objective of the present invention is to provide a porous ultra-thin polymer film, and a method for producing said porous ultra-thin polymer film. The present invention provides a porous ultra-thin polymer film with a film thickness of 10 nm-1000 nm. In addition, the present invention provides a method for producing a porous ultra-thin polymer film, comprising the steps of: dissolving two types of mutually-immiscible polymers in a first solvent in an arbitrary proportion to obtain a solution; applying the solution onto a substrate and then removing the first solvent from the solution applied onto the substrate to obtain a phase-separated ultra-thin polymer film that has been phase-separated into a sea-island structure; and immersing the ultra-thin polymer film in a second solvent which is a good solvent for the polymer of the island parts but a poor solvent for a polymer other than the island parts to remove the island parts, thereby obtaining a porous ultra-thin polymer film.
First claim
Opening claim text (preview).
The invention claimed is: 1. A substantially disk-shaped ultra-thin polymer film whose film thickness is 10 nm-1000 nm and whose size is in a range of 30 nm-50 μm, wherein the polymer is a single polymer selected from the group consisting of polymethyl methacrylate, poly-D/L-lactic acid, polyethylene glycol and polyvinylpyrrolidone. 2. The substantially disk-shaped ultra-thin polymer film according to claim 1 , wherein the size is in a range greater than 1 μm and less than or equal to 25 μm. 3. The substantially disk-shaped ultra-thin polymer film according to claim 2 , wherein the size is in a range greater than 1 μm and less than or equal to 15 μm. 4. The substantially disk-shaped ultra-thin polymer film according to claim 1 , wherein the polymer is poly-D/L-lactic acid.
Assignees
Inventors
Classifications
characterised by their properties · CPC title
Homopolymers or copolymers of methyl methacrylate · CPC title
Manufacture or treatment of nanostructures · CPC title
Pore-control agents or pore formers · CPC title
Characteristic thickness · CPC title
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- What does patent US9938384B2 cover?
- The objective of the present invention is to provide a porous ultra-thin polymer film, and a method for producing said porous ultra-thin polymer film. The present invention provides a porous ultra-thin polymer film with a film thickness of 10 nm-1000 nm. In addition, the present invention provides a method for producing a porous ultra-thin polymer film, comprising the steps of: dissolving two t…
- Who is the assignee on this patent?
- Nanotheta Co Ltd, Takeoka Shinji, Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification C08J5/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 10 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).