Cellulose foams for high performance insulations
US-2020392301-A1 · Dec 17, 2020 · US
Cellulose Nanofiber Carbon and Method for Producing Same
US2022098040A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022098040-A1 |
| Application number | US-201917423392-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 27, 2019 |
| Priority date | Jan 16, 2019 |
| Publication date | Mar 31, 2022 |
| Grant date | — |
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 are cellulose nanofiber carbon having elasticity, high mechanical strength, and capable of increasing its specific surface area, and a method for producing the same. A method for producing cellulose nanofiber carbon by carbonizing cellulose nanofibers, includes a semi-carbonization step S2 of semi-carbonizing a dispersion liquid or gel containing cellulose nanofibers with a heat medium to obtain a semi-carbonized body, and a carbonization step S3 of heating and carbonizing the semi-carbonized body in an atmosphere that does not burn the semi-carbonized body to obtain cellulose nanofiber carbon.
First claim
Opening claim text (preview).
1 . A method for producing cellulose nanofiber carbon by carbonizing cellulose nanofibers, the method comprising: semi-carbonizing a dispersion liquid or gel containing cellulose nanofibers with a heat medium to obtain a semi-carbonized product; and heating and carbonizing the semi-carbonized product in an atmosphere that does not burn the semi-carbonized product to obtain cellulose nanofiber carbon. 2 . The method for producing cellulose nanofiber carbon according to claim 1 , wherein the heat medium is hot water at high temperature and high pressure. 3 . The method for producing cellulose nanofiber carbon according to claim 1 or 2 , further comprising crushing the carbonized cellulose nanofiber carbon. 4 . The method for producing cellulose nanofiber carbon according to claim 3 , further comprising: mixing the crushed cellulose nanofiber carbon and a dispersion liquid containing the cellulose nanofibers to obtain a mixed solution; and removing liquid from the mixed solution. 5 . The method for producing cellulose nanofiber carbon according to claim 1 or 2 , further comprising dispersing the cellulose nanofibers using bacteria to form the gel. 6 . The method for producing cellulose nanofiber carbon according to claim 5 , further comprising: crushing the carbonized cellulose nanofiber carbon; crushing the formed gel; and mixing the crushed cellulose nanofiber carbon with the crushed gel to obtain a mixture. 7 . The method for producing cellulose nanofiber carbon according to claim 6 , further comprising: applying the mixture to form a predetermined shape; and removing liquid from the mixture. 8 . Cellulose nanofiber carbon comprising a three-dimensional network structure of a co-continuous body in which cellulose nanofibers are connected.
Assignees
Inventors
Classifications
- D01F9/16Primary
from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate (D01F9/18 takes precedence) · CPC title
with carbon or graphite; with carbides; with graphitic acids or their salts · CPC title
- C01B32/05Primary
Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 · CPC title
obtained by SEM · 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 US2022098040A1 cover?
- Provided are cellulose nanofiber carbon having elasticity, high mechanical strength, and capable of increasing its specific surface area, and a method for producing the same. A method for producing cellulose nanofiber carbon by carbonizing cellulose nanofibers, includes a semi-carbonization step S2 of semi-carbonizing a dispersion liquid or gel containing cellulose nanofibers with a heat medium…
- Who is the assignee on this patent?
- Nippon Telegraph & Telephone
- What technology area does this patent fall under?
- Primary CPC classification D01F9/16. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Mar 31 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).