Superabsorbent polymers in agricultural applications
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0264698
(2008-11-04)
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등록번호 |
US8017553
(2011-08-30)
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발명자
/ 주소 |
- Doane, William McKee
- Doane, Steven William
- Savich, Milan H.
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출원인 / 주소 |
- Absorbent Technologies, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
7 인용 특허 :
35 |
초록
▼
Superabsorbent polymer (SAP) products for use in agricultural applications, and methods of making and using the same are disclosed. Certain of the SAPs include a monomer or a mixture of monomers, selected from acrylic acid, acrylamide, acrylonitrile, methacrylamide, 2-acryloamido-2-methyl-propanesul
Superabsorbent polymer (SAP) products for use in agricultural applications, and methods of making and using the same are disclosed. Certain of the SAPs include a monomer or a mixture of monomers, selected from acrylic acid, acrylamide, acrylonitrile, methacrylamide, 2-acryloamido-2-methyl-propanesulfonic acid, methacrylic acid, vinyl sulfonic acid, ethyl acrylate, potassium acrylate, derivatives thereof or mixtures thereof, that is graft polymerized onto a starch in the presence of an initiator to form a starch graft copolymer.
대표청구항
▼
What is claimed is: 1. A method for preparing a superabsorbent polymer seed coating, comprising:graft polymerizing a monomer onto a starch in the presence of an initiator to form a starch graft copolymer, wherein the monomer is at least one of the following: acrylic acid, acrylamide, acrylonitrile,
What is claimed is: 1. A method for preparing a superabsorbent polymer seed coating, comprising:graft polymerizing a monomer onto a starch in the presence of an initiator to form a starch graft copolymer, wherein the monomer is at least one of the following: acrylic acid, acrylamide, acrylonitrile, methacrylamide, 2-acryloamido-2-methyl-propanesulfonic acid, methacrylic acid, vinyl sulfonic acid, ethyl acrylate, potassium acrylate, derivatives thereof or mixtures thereof;isolating the starch graft copolymer by extruding the starch graft copolymer into strands;applying an alcohol to the strands to reduce tackiness of the extruded strands, the alcohol chosen from: methanol, ethanol, propanol or isopropanol;forming granules of starch graft copolymer from the extruded strands; andscreening the starch graft copolymer granules to select granules having a mesh size finer than about 75 mesh.
이 특허에 인용된 특허 (35)
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Kellenberger Stanley R. (Appleton WI), Absorbent products containing hydrogels with ability to swell against pressure.
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Jones Duane A. (Minneapolis MN) Elmquist Lyle F. (St. Paul MN), Absorbent starch graft polymer and method of its preparation.
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Xu Wayne ; Doane William M. ; Lawton ; Jr. John W., Biodegradable polyester and natural polymer compositions and films therefrom.
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Hartan Hans-Georg,DEX ; Souren Juergen,DEX ; Philippsen-Neu Elke,DEX ; Poeschmann Rainer,DEX, Compacted disintegrant granulate for compression-molded articles, its production and its use.
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Casteel Sascha,DEX ; Hartan Hans-Georg,DEX ; Philippsen-Neu Elke,DEX ; Poeschmann Rainer,DEX, Compacted granulate, process for making same and use as disintegrating agent for pressed detergent tablets, cleaning agent tablets for dishwashers, water softening tablets and scouring salt tablets.
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Casteel Sascha,DEX ; Hartan Hans-Georg,DEX ; Philippsen-Neu Elke,DEX ; Poeschmann Rainer,DEX, Compacted granulate, process for making same and use as disintegrating agent for pressed detergent tablets, cleaning agent tablets for dishwashers, water softening tablets or scouring salt tablets.
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Chmelir Miroslav,DEX, Cross-linked synthetic polymers having a porous structure, a high absorption rate for water, aqueous solutions and body.
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Lind Eric J. (Naperville IL), Enhancing absorption rates of superabsorbents by incorporating a blowing agent.
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Lind Eric J. (Naperville IL), Enhancing absorption rates of superabsorbents by incorporating a blowing agent.
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Dahmen ; Kurt ; Hubner ; Wolfgang ; Barthell ; Eduard, Flocculating agent comprising water-in-oil emulsion of H-active polymer carrying formaldehyde and amine radicals.
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Hubner ; Wolfgang ; Barthell ; Eduard ; Dahmen ; Kurt, Flocculating agent comprising water-in-oil emulsion of stabilizer plus NH-active polymer carrying formaldehyde and amin.
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Silver Scott C., Granular formulation of biological entities with improved storage stability.
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Fanta George F. (Peoria IL) Stout Edward I. (Peoria IL) Doane William M. (Morton IL), Highly absorbent graft copolymers of polyhydroxy polymers, acrylonitrile, and acrylic comonomers.
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Dahmen Kurt,DEX ; Muller Thomas,DEX ; Peppmoller Reinmar,DEX ; Behlau Norbert,DEX, Leather-treatment agents, process for their preparation, and their use for producing low-fogging leathers.
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Hartan Hans-Georg (Kevelaer DEX) Landscheidt Alfons (Krefeld DEX), Manufacturing paper employing a polymer of acrylic or methacrylic acid.
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Chmelir, Miroslav; Dahmen, Kurt, Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof.
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Bailey Kristy M. (Naperville IL) Marek Patrick J. (Geneva IL), Method for reducing residual acrylic acid in acrylic acid polymer gels.
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Weaver Mary Ollidene (Peoria IL) Bagley Edward B. (Morton IL) Fanta George F. (Peoria IL) Doane William M. (Morton IL), Method of reducing water content of emulsions, suspensions, and dispersions with highly absorbent starch-containing poly.
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Doane,Steven William; Doane,William McKee, Methods of forming superabsorbent polymer products for use in agriculture.
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Goossens Bernhard (Velbert DEX) Kster Erich (Krefeld DEX) Dahmen Kurt (Monchen-Gladbach DEX) Barthell Eduard (Krefeld DEX), Polymers of
ab
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