Nanoparticles
US-9220689-B2 · Dec 29, 2015 · US
Composition for film formation, laminate, film, sheet base material, method for producing a composition for film formation, and method for preparing a cellulose dispersion
US9718969B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9718969-B2 |
| Application number | US-201615285236-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2016 |
| Priority date | Sep 22, 2011 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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Abstract
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A method for preparing a cellulose dispersion includes oxidizing cellulose; preparing cellulose nanofibers by defibrating the oxidized cellulose; and adding a water-soluble polymer and inorganic particles to the dispersion containing the cellulose nanofibers.
First claim
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The invention claimed is: 1. A method for preparing a cellulose dispersion, comprising: providing cellulose; preparing cellulose nanofibers by defibrating the cellulose; and adding a water-soluble polymer and a swollen layered inorganic compound to a dispersion containing the cellulose nanofibers, the adding the water-soluble polymer and swollen layered inorganic compound comprising: mixing the water-soluble polymer and the swollen layered inorganic compound to prepare a dispersion of the water-soluble polymer and the swollen layered inorganic compound; and mixing the dispersion of the water-soluble polymer and the swollen layered inorganic compound with the dispersion containing the cellulose nanofibers, so that the cellulose nanofibers and the water-soluble polymer are intercalated between layers of the swollen layered inorganic compound. 2. The method for preparing a cellulose dispersion as defined in claim 1 , wherein the adding the swollen water-soluble polymer and layered inorganic compound further comprises: agitating the dispersion of the mixture of the water-soluble polymer and the swollen layered inorganic compound, so that the agitated dispersion of the water-soluble polymer and the swollen layered inorganic compound is mixed with the dispersion containing the cellulose nanofibers. 3. The method for preparing a cellulose dispersion as defined in claim 1 , wherein the adding the water-soluble polymer and swollen layered inorganic compound further comprises: heating the dispersion of the water-soluble polymer and the swollen layered inorganic compound, so that the heated dispersion of the water-soluble polymer and the swollen layered inorganic compound is mixed with the dispersion containing the cellulose nanofibers. 4. The method for preparing a cellulose dispersion as defined in claim 1 , wherein the adding the water-soluble polymer and layered inorganic compound further comprises: heating the mixture of the dispersion of the water-soluble polymer and the swollen layered inorganic compound and the dispersion containing the cellulose nanofibers. 5. The method for preparing a cellulose dispersion as defined in claim 1 , wherein the adding the water-soluble polymer and swollen layered inorganic compound further comprises: after an aqueous solution of the water-soluble polymer and the swollen inorganic compound have been mixed and agitated, heating the solution of the water-soluble polymer and the swollen inorganic compound. 6. The method for preparing a cellulose dispersion as defined in claim 1 , wherein the cellulose nanofibers and the water-soluble polymer are intercalated between the layers of the swollen layered inorganic compound while the swollen layered inorganic compound is dispersed. 7. The method for preparing a cellulose dispersion as defined in claim 1 , wherein individual gaps between the layers of the swollen layered inorganic compound are not less than 14 angstroms.
Assignees
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Classifications
with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title
Starch; Degradation products thereof, e.g. dextrin · CPC title
Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof · CPC title
Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title
Polyurethanes · CPC title
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Frequently asked questions
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- What does patent US9718969B2 cover?
- A method for preparing a cellulose dispersion includes oxidizing cellulose; preparing cellulose nanofibers by defibrating the oxidized cellulose; and adding a water-soluble polymer and inorganic particles to the dispersion containing the cellulose nanofibers.
- Who is the assignee on this patent?
- Toppan Printing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09D7/1291. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 01 2017 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).