Method for manufacturing separator-integrated electrode, and separator-integrated electrode
US-2020044217-A1 · Feb 6, 2020 · US
Production method of resin porous material
US11795288B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11795288-B2 |
| Application number | US-202117495271-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 6, 2021 |
| Priority date | Oct 15, 2020 |
| Publication date | Oct 24, 2023 |
| Grant date | Oct 24, 2023 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a method that can produce a resin porous material from a water-insoluble polymer in a small number of steps while suppressing the formation of skin layers. The production method of the resin porous material disclosed herein includes preparing a solution of a water-insoluble polymer in a mixed solvent including a good solvent of the water-insoluble polymer and a first poor solvent of the water-insoluble polymer, and vaporizing and removing the mixed solvent from the solution. The first poor solvent has a higher boiling point than the good solvent. In vaporizing and removing the mixed solvent, the mixed solvent is vaporized and removed under the presence of vapor of a second poor solvent of the water-insoluble polymer to form pores and obtain a porous material.
First claim
Opening claim text (preview).
What is claimed is: 1. A production method of a resin porous material, the method comprising: preparing a solution of a water-insoluble polymer in a mixed solvent including a good solvent of the water-insoluble polymer and a first poor solvent of the water-insoluble polymer and vaporizing and removing the mixed solvent from the solution, wherein the first poor solvent has a higher boiling point than the good solvent and, in vaporizing and removing the mixed solvent, the mixed solvent is vaporized and removed under the presence of vapor of a second poor solvent of the water-insoluble polymer to form pores and obtain a porous material, and the method further comprises, after preparing the solution and before vaporizing and removing the mixed solvent, applying the prepared solution of the water-insoluble polymer on a surface of a substrate in a thin film form. 2. The production method according to claim 1 , wherein a concentration of the vapor of the second poor solvent is 6,000 ppm by volume or higher. 3. The production method according to claim 1 , wherein a distance Ra of the second poor solvent from the HSP of the water-insoluble polymer is 10 MPa 1/2 or larger. 4. The production method according to claim 1 , wherein the second poor solvent has a boiling point of 210° C. or lower. 5. The production method according to claim 1 , wherein the water-insoluble polymer is an ethylene-vinyl alcohol copolymer. 6. The production method according to claim 1 , wherein the substrate is an electrode of a secondary battery.
Assignees
Inventors
Classifications
- C08J9/28Primary
by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum · CPC title
Polyolefins · CPC title
Porosity · CPC title
the liquid phase being organic · CPC title
Copolymers of ethene (C08J2323/16 takes precedence) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11795288B2 cover?
- Provided is a method that can produce a resin porous material from a water-insoluble polymer in a small number of steps while suppressing the formation of skin layers. The production method of the resin porous material disclosed herein includes preparing a solution of a water-insoluble polymer in a mixed solvent including a good solvent of the water-insoluble polymer and a first poor solvent of…
- Who is the assignee on this patent?
- Prime Planet Energy & Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification C08J9/28. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 24 2023 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).