Preparation method of superabsorbent polymer
US-2016311985-A1 · Oct 27, 2016 · US
Nonaqueous method of dispersing a water soluble polymer
US9469762B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9469762-B2 |
| Application number | US-201214358852-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 11, 2012 |
| Priority date | Dec 22, 2011 |
| Publication date | Oct 18, 2016 |
| Grant date | Oct 18, 2016 |
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Abstract
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Described are methods of dispersing and hydrating a water soluble polymer, comprising forming a nonaqueous slurry of polypropylene glycol, water soluble polymer, and hydrophobically modified ethoxylated urethane, provided that the slurry contains less than five percent water; and then contacting the nonaqueous slurry with water to disperse and hydrate the water soluble polymer.
First claim
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The invention claimed is: 1. A method of dispersing and hydrating a water soluble polymer, comprising: forming a slurry of polypropylene glycol, water soluble polymer, and hydrophobically modified ethoxylated urethane, provided that the slurry contains less than five percent water and that the slurry is surfactant free; and then contacting the slurry with water to disperse and hydrate the water soluble polymer. 2. The method of claim 1 , wherein the water soluble polymer is a water soluble modified cellulose ether selected from the group consisting of: alkyl cellulose derivatives, hydroxyalkyl cellulose derivatives, cationic hydroxyalkyl cellulose derivatives (the cationic specie being a quaternary alkyl amine) and carboxylalkyl cellulose derivatives. 3. The method of claim 1 , wherein the water soluble polymer is selected from the group consisting of: hydroxyethyl cellulose, cationically-modified hydroxyethylcellulose, hydroxypropylmethylcellulose, and polyethylene oxide. 4. The method of claim 1 , wherein the method is performed without addition of heat. 5. The method of claim 1 , wherein the polypropylene glycol is Tripropylene Glycol Methyl Ether. 6. A slurry consisting essentially of: polypropylene glycol, water soluble polymer, and hydrophobically modified ethoxylated urethane, provided that the slurry contains less than five percent water and that the slurry is surfactant free. 7. A personal care composition containing water soluble polymer, formed by the method of claim 1 . 8. A fabric care composition containing water soluble polymer, formed by the method of claim 1 .
Assignees
Inventors
Classifications
- C08J3/07Primary
from polymer solutions · CPC title
with hydroxylated hydrocarbon radicals · CPC title
Polyurethanes · CPC title
Cellulose ethers · CPC title
Polyurethanes · CPC title
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- What does patent US9469762B2 cover?
- Described are methods of dispersing and hydrating a water soluble polymer, comprising forming a nonaqueous slurry of polypropylene glycol, water soluble polymer, and hydrophobically modified ethoxylated urethane, provided that the slurry contains less than five percent water; and then contacting the nonaqueous slurry with water to disperse and hydrate the water soluble polymer.
- Who is the assignee on this patent?
- Rohm & Haas
- What technology area does this patent fall under?
- Primary CPC classification C08J3/07. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 18 2016 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).