Complexes of cellulose fibers and inorganic particles
US-2018282936-A1 · Oct 4, 2018 · US
Complexes of magnesium carbonate microparticles and fibers as well as processes for preparing them
US11053133B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11053133-B2 |
| Application number | US-201615757731-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 8, 2016 |
| Priority date | Sep 8, 2015 |
| Publication date | Jul 6, 2021 |
| Grant date | Jul 6, 2021 |
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- Title
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Abstract
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The present invention aims to provide techniques for preparing complexes of magnesium carbonate particles and a fiber. The complexes of magnesium carbonate microparticles and a fiber can be synthesized efficiently by synthesizing the magnesium carbonate in a solution containing the fiber.
First claim
Opening claim text (preview).
The invention claimed is: 1. A complex of magnesium carbonate particles having an average particle size of 50 μm or less and a fiber, wherein 15% or more of the surface of the fiber is covered with the magnesium carbonate particles, and the magnesium carbonate is a basic magnesium carbonate. 2. The complex of claim 1 , wherein the fiber is a pulp fiber. 3. The complex of claim 1 , wherein the weight ratio between the magnesium carbonate particles and the fiber is 5:95 to 95:5. 4. The complex of claim 1 , wherein the magnesium carbonate particles are adhered to the surface of the fibers. 5. A product comprising the complex of claim 1 . 6. The product of claim 5 , which is in the form of a sheet. 7. A process for preparing a complex of magnesium carbonate particles and a fiber as defined in claim 1 , comprising synthesizing the magnesium carbonate in a solution containing the fiber. 8. The process of claim 7 , wherein the magnesium carbonate particles have an average particle size of 50 μm or less. 9. The process of claim 7 , comprising synthesizing the magnesium carbonate from magnesium hydroxide. 10. The process of claim 7 , comprising synthesizing the magnesium carbonate by injecting an aqueous suspension containing magnesium hydroxide into a reaction vessel. 11. The process of claim 7 , comprising synthesizing the magnesium carbonate in the presence of cavitation bubbles. 12. The process of claim 7 , comprising reacting an aqueous suspension of the starting material and a gas containing carbon dioxide in the presence of cavitation bubbles. 13. The process of claim 7 , wherein the cavitation bubbles are generated by injecting a liquid into a reaction vessel. 14. The process of claim 7 , wherein the fiber is a pulp fiber. 15. The process of claim 7 , wherein the cavitation bubbles are generated by injecting an aqueous suspension containing magnesium hydroxide into a reaction vessel. 16. The process of claim 7 , wherein the reaction solution circulated from the reaction vessel is used as the aqueous suspension. 17. The process of claim 7 , wherein the magnesium carbonate has a primary particle size of 10 nm to 3 μm. 18. The process of claim 7 , wherein the weight ratio between the magnesium carbonate and the fiber is 5:95 to 95:5. 19. The process of claim 7 , wherein the reaction vessel is a pressure vessel. 20. The process of claim 7 , comprising using an aqueous suspension of a premixture of magnesium hydroxide and a pulp. 21. The process of claim 7 , further comprising hydrophobizing the complex.
Assignees
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Classifications
Controlling the temperature · CPC title
forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately · CPC title
of organic and inorganic material · CPC title
controlling the pressure · CPC title
extending in two dimensions, e.g. plate-like · CPC title
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Frequently asked questions
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- What does patent US11053133B2 cover?
- The present invention aims to provide techniques for preparing complexes of magnesium carbonate particles and a fiber. The complexes of magnesium carbonate microparticles and a fiber can be synthesized efficiently by synthesizing the magnesium carbonate in a solution containing the fiber.
- Who is the assignee on this patent?
- Jujo Paper Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01F5/24. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 06 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).