[특허]Process of making an interpenetrating superabsorbent polyurethane foam

Process of making an interpenetrating superabsorbent polyurethane foam 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08L-075/00 C08G-018/10 C08G-018/67
출원번호	US-0888301 (1986-07-18)
발명자 / 주소	Garvey Chad E. (Ball Ground GA) Pazos Jose F. (Roswell GA)
출원인 / 주소	Kimberly-Clark Corporation (Neenah WI 02)
인용정보	피인용 횟수 : 41 인용 특허 : 0

초록 ▼

A superabsorbent polyurethane foam based on an interpenetrating polymer network of a crosslinked polyurethane and a crosslinked addition polymer containing a plurality of chain segments made up of functional group-containing repeating units which may be the same or different. The functional groups of the repeating units are selected from the group consisting of carbamoyl, substituted carbamoyl, and carboxy and the alkali metal and ammonium salts thereof. A method of preparing the foams is described which involves forming the polyurethane foam in the presence of addition polymerizable monomers and crosslinking agent and a thermally activated free radical initiator. Addition polymerization can take place during or after foam formation. Reactants and reaction conditions are selected so as to essentially avoid grafting addition polymer to polyurethane. Preferably, the polyurethane is derived from an isocyanate-terminated poly(oxyalkylene) polyol having an isocyanate functionality greater than two and the addition polymer is the reaction product of a crosslinking agent, such as methylene-bis-acrylamide and 1,6-hexanediol diacrylate, with at least one compound selected from the group consisting of acrylamides, substituted acrylamides, and acrylate and methacrylate salts, i.e., alkali metal and ammonium salts of acrylic and methacrylic acid. Such superabsorbent polyurethane foam is useful in the manufacture of absorbent articles, especially disposable absorbent articles such as diapers, sanitary napkins, bedpads, incontinent pads, and the like.

대표청구항 ▼

A method of preparing a superabsorbent polyurethane foam which comprises mixing an isocyanate-terminated polyurethane prepolymer having an isocyanate functionality greater than two with an aqueous solution of at least one first compound in the presence of at least one thermally activated free radical initiator and at least one second compound, said at least one first compound having (1) at least one carbon-carbon double bond capable of undergoing addition polymerization with the at least one second compound and with itself and other first compounds which may be present and (2) at least one functional group selected from the group consisting of carbamoyl, substituted carbamoyl, and carboxy and the alkali metal and ammonium salts thereof; said second compound having at least two carbon-carbon double bonds which are capable of undergoing addition polymerization with said at least one first compound; the proportion of said first and second compounds are selected to impart superabsorbent properties to the resulting polyurethane foam; and the resulting polyurethane foam is essentially free of grafting of addition polymer to polyurethane.

이 특허를 인용한 특허 (41)

Qin Jian ; Wallajapet Palani Raj Ramaswami ; Williams Gary D., Absorbent foam.
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Arroyo Candido J. (Lithonia GA) Meskell ; Jr. David J. (Snellville GA) Mullin Francis J. (Chamblee GA), Cable closure including superabsorbent foam water blocking system and methods of using same.
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Greenwood,Jody L.; Temple, Jr.,Kenneth D.; Lail,Keith H.; Seddon,David A.; Tuttle,Randall, Fiber optic cable having a dry insert and methods of making the same.
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Nardoza, Joseph; Mass, Lawrence; Reyes, Susan A.; Cordova, Abimael Maelo, Fluid-swellable composition, device and method for using the same.
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Wilson Robert N. (Hixson TN), Foamed polymer and process for production thereof.
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Wilson Robert N. ; Blair G. Ronald,CAX, Foamed polymer and process for production thereof.
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Lovette Joseph W. (Newark DE) Free Sharon A. (Wallingford PA), Hydrophilic urethane foam.
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Levy Richard, Insecticidal delivery compositions and methods for controlling a population of insects in an aquatic environment.
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Jay,William Harold, Ion exchange.
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Hebbrecht, Geert; Dubruel, Peter; Vanneste, Myriam; Laperre, Jan; Schacht, Etienne; Schelfhout, Jorg, Methods and compositions for textile layers and coatings.
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Schneider,Reiner; Heinz,Edgar; Koschwitz,Frank, Optical transmission element.
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Schneider,Reiner; Heinz,Edgar; Koschwitz,Frank, Optical transmission element.
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Greenwood, Jody L.; Hedrick, Douglas S.; Lail, Jason C.; McCollough, W. Welch; Temple, Jr., Kenneth D., Optical tube assembly having a dry insert and methods of making the same.
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Lail, Jason C.; Chiasson, David W.; Greenwood, Jody L.; Seddon, David A.; Ottmann, Thomas, Optical tube assembly having a dry insert and methods of making the same.
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Lail,Jason C.; Chiasson,David W.; Greenwood,Jody L.; Seddon,David A.; Ottmann,Thomas, Optical tube assembly having a dry insert and methods of making the same.
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Lail,Jason C.; Greenwood,Jody L.; Hedrick,Douglas S.; Baucom,James L.; McCollough, Jr.,W. Welch; Temple, Jr.,Kenneth D.; Tedder,Catharina L., Optical tube assembly having a dry insert and methods of making the same.
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Parsons, Alan T.; Greenwood, Jody L.; Temple, Jr., Kenneth D.; Lail, Jason C., Optical tube assembly having a dry insert and methods of making the same.
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Parsons,Alan T., Optical tube assembly having a dry insert and methods of making the same.
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Parsons,Alan T.; Greenwood,Jody L.; Temple, Jr.,Kenneth D.; Lail,Jason C., Optical tube assembly having a dry insert and methods of making the same.
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Parsons,Alan T.; Greenwood,Jody L.; Temple, Jr.,Kenneth D.; Lail,Jason C., Optical tube assembly having a dry insert and methods of making the same.
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Wallajapet Palani Raj Ramaswami ; Qin Jian ; Williams Gary D., Process for preparing an absorbent foam.
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Blair G. Ronald,CAX ; Attfield Harold R.,CAX ; Wilson Robert N., Rebond foam and process for production thereof.
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Wilson Robert N., Superabsorbent hydrophilic isocyanate-based foam and process for production thereof.
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Wilson Robert N. (Hixson TN), Superabsorbent hydrophilic isocyanate-based foam and process for production thereof.
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Hähnle, Hans-Joachim; Schröder, Ulrich; Heider, Wolfgang; Schornick, Gunnar; Anstock, Thomas, Water-absorbing, cellular, cross-linked polymers with improved distribution effect, method for their production and their use.
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Hans-Joachim Hahnle DE; Ulrich Schroder DE; Martin Beck DE; Wolfgang Heider DE; Gunnar Schornick DE; Thomas Anstock DE, Water-absorbing, cross-linked polymerizates in the form of a foam, a method for the production thereof, and their use.
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Hahnle Hans-Joachim,DEX ; Walter Manfred,DEX ; Tropsch Jurgen,DEX ; Schornick Gunnar,DEX ; Anstock Thomas,DEX, Water-absorbing, expanded, crosslinked polymers, the production and use thereof.
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Reddy, Kiran K.; Ranganathan, Sridhar; Baker, Joseph K.; Morris, Cameron Ray; Rossignol, Stephanie Ann; Clement, Andrew; Nukuto, George; Grimard, Denis R.; Rippl, Carl G.; Lee, MeeWha; Woon, Paul; Kroll, Russell J.; Londborg, Mark; Henshaw, Robert; Radwanski, Fred Robert; Colman, Charles Wilson, Wet mop with multi-layer substrate.
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Process of making an interpenetrating superabsorbent polyurethane foam 원문보기

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