Odor adsorbent
US-2016074550-A1 · Mar 17, 2016 · US
Superabsorbent polymer and the method of fabricating the same
US10731024B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10731024-B2 |
| Application number | US-201715831349-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2017 |
| Priority date | Mar 31, 2017 |
| Publication date | Aug 4, 2020 |
| Grant date | Aug 4, 2020 |
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- Title
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Abstract
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A superabsorbent polymer includes polymer particles, surface cross-linking agents and particles made of silicon-containing inorganic salt. The polymer particles have cross-linking inside the polymer particles. The surface cross-linking agents are covalently bound to the surface of the polymer particles so as to constitute a surface cross-linked region at the surface of each said resin particle, and the particles made of silicon-containing inorganic salt cover the surface of the polymer particles.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing a superabsorbent polymer, comprising: providing an acid-based monomer aqueous solution and performing a radical polymerization reaction to obtain a superabsorbent polymer having an internal crosslinking structure; cutting said superabsorbent polymer to obtain a plurality of superabsorbent polymer particles; adding a surface cross-linking agent to a surface of each of said superabsorbent polymer particles and performing a heat treatment so as to constitute a surface cross-linked region at the surface of each said resin particle; and coating said surface of each of said superabsorbent polymer particles with an aqueous solution having silicon-containing inorganic salt-containing particles, wherein a pH value of said aqueous solution having said silicon-containing inorganic salt-containing particles is between 4 and 6.5. 2. The method for producing a superabsorbent polymer of claim 1 , wherein a weight percentage of said aqueous solution having said silicon-containing inorganic salt-containing particles to said superabsorbent polymer particles is between 0.5% to 20%. 3. The method for producing a superabsorbent polymer of claim 1 , wherein a weight ratio of alumina to silicon oxide in said silicon-containing inorganic salt-containing particles is between 0.7 and 0.95. 4. The method for producing a superabsorbent polymer of claim 1 , wherein each of said silicon-containing inorganic salt-containing particles has a particle size between 1 and 10 μm. 5. The method for producing a superabsorbent polymer of claim 1 , wherein each of said silicon-containing inorganic salt-containing particles is composed of kaolinite.
Assignees
Inventors
Classifications
- A61L15/18Primary
containing inorganic materials · CPC title
Silicon-containing compounds · CPC title
Powdering or granulating · CPC title
Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof · CPC title
Natural alumino-silicates, e.g. zeolites · CPC title
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- What does patent US10731024B2 cover?
- A superabsorbent polymer includes polymer particles, surface cross-linking agents and particles made of silicon-containing inorganic salt. The polymer particles have cross-linking inside the polymer particles. The surface cross-linking agents are covalently bound to the surface of the polymer particles so as to constitute a surface cross-linked region at the surface of each said resin particle,…
- Who is the assignee on this patent?
- Formosa Plastics Corp
- What technology area does this patent fall under?
- Primary CPC classification A61L15/18. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Aug 04 2020 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).