Method for Producing Water-Absorbing Polymer Particles with High Swelling Rate and High Centrifuge Retention Capacity with Simultaneously High Permeability of the Swollen Gel Bed
US-2015376318-A1 · Dec 31, 2015 · US
Surface treatment method for water-absorbent resin
US8975339B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975339-B2 |
| Application number | US-67885608-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 8, 2008 |
| Priority date | Oct 9, 2007 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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Abstract
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Provided is a surface treatment method for a water-absorbent resin having excellent production efficiency, absorption capacity against pressure, fluid permeability or the like. Provided is a method for the surface treatment of a water-absorbent resin which comprises a) a step for mixing 0.1 to 20 parts by weight of an acid group-containing radically polymerizable compound and 5 to 20 parts by weight of water, relative to 100 parts by weight of a water-absorbent resin; and b) a step for polymerizing the acid group-containing radically polymerizable compound, wherein neutralization ratio of the acid group-containing radically polymerizable compound is 0 to 60% by mol, and is lower than neutralization ratio of the water-absorbent resin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A surface-treated water-absorbent resin obtained by a method comprising: a) a step for mixing 0.1 to 20 parts by weight of an acid group-containing radically polymerizable compound and 5 to 20 parts by weight of water, relative to 100 parts by weight of a water-absorbent resin; and b) a step for polymerizing the acid group-containing radically polymerizable compound, wherein neutralization ratio of the acid group-containing radically polymerizable…
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Chemistry & Metallurgy · mapped topic
- C08J3/245Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US8975339B2 cover?
- Provided is a surface treatment method for a water-absorbent resin having excellent production efficiency, absorption capacity against pressure, fluid permeability or the like. Provided is a method for the surface treatment of a water-absorbent resin which comprises a) a step for mixing 0.1 to 20 parts by weight of an acid group-containing radically polymerizable compound and 5 to 20 parts by w…
- Who is the assignee on this patent?
- Mitsukami Yoshiro, Iwamura Taku, Matsumoto Makoto, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08J3/245. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 2015 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).