Method for producing water-absorbent resin
US-9221030-B2 · Dec 29, 2015 · US
Polymer dispersion
US9005397B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9005397-B2 |
| Application number | US-200913059874-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 19, 2009 |
| Priority date | Aug 22, 2008 |
| Publication date | Apr 14, 2015 |
| Grant date | Apr 14, 2015 |
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Abstract
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The invention relates to an aqueous polymer dispersion comprising an anionic water-soluble dispersion polymer comprising in polymerized form a monomer mixture comprising (i) one or more anionic monomers, (ii) a first non-ionic vinyl monomer which is acrylamide, and (iii) at least one second non-ionic vinyl monomer; a water-soluble salt and a stabilizer, wherein the water soluble salt is present in an amount of at least 2.0% by weight, based on the total weight of the dispersion. The invention further relates to a process for producing the aqueous polymer dispersion, use of the aqueous polymer dispersion as a flocculating agent in papermaking or for water purification, and a process for producing paper which comprises adding one or more drainage and retention aids comprising the aqueous polymer dispersion to an aqueous suspension containing cellulosic fibers and then dewatering the obtained suspension.
First claim
Opening claim text (preview).
The invention claimed is: 1. An aqueous polymer dispersion comprising an anionic water-soluble dispersion polymer comprising in polymerized form a monomer mixture comprising (i) one or more anionic monomers, (ii) a first non-ionic vinyl monomer which is acrylamide, and (iii) at least one second non-ionic vinyl monomer; a water-soluble salt and a stabilizer, wherein the water soluble salt is present in an amount from about 3 to about 40% by weight, based on the total weight o…
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Classifications
Chemistry & Metallurgy · mapped topic
Textiles & Paper · mapped topic
Textiles & Paper · mapped topic
Chemistry & Metallurgy · mapped topic
- C08F2/20Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9005397B2 cover?
- The invention relates to an aqueous polymer dispersion comprising an anionic water-soluble dispersion polymer comprising in polymerized form a monomer mixture comprising (i) one or more anionic monomers, (ii) a first non-ionic vinyl monomer which is acrylamide, and (iii) at least one second non-ionic vinyl monomer; a water-soluble salt and a stabilizer, wherein the water soluble salt is present…
- Who is the assignee on this patent?
- Przybyla Christian, Struck Oliver, Laschewsky André, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C08F2/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 14 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).