CA2130427A1 - Modified polysaccharides having improved absorbent properties and process for the preparation thereof - Google Patents

Modified polysaccharides having improved absorbent properties and process for the preparation thereof

Info

Publication number
CA2130427A1
CA2130427A1 CA002130427A CA2130427A CA2130427A1 CA 2130427 A1 CA2130427 A1 CA 2130427A1 CA 002130427 A CA002130427 A CA 002130427A CA 2130427 A CA2130427 A CA 2130427A CA 2130427 A1 CA2130427 A1 CA 2130427A1
Authority
CA
Canada
Prior art keywords
preparation
modified polysaccharide
absorbent properties
modified polysaccharides
improved absorbent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002130427A
Other languages
French (fr)
Other versions
CA2130427C (en
Inventor
Jian Qin
James R. Gross
William J. Mui
Xin Ning
Wen Z. Schroeder
Tong Sun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kimberly Clark Worldwide Inc
Original Assignee
Kimberly Clark Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kimberly Clark Corp filed Critical Kimberly Clark Corp
Publication of CA2130427A1 publication Critical patent/CA2130427A1/en
Application granted granted Critical
Publication of CA2130427C publication Critical patent/CA2130427C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C08L1/286—Alkyl ethers substituted with acid radicals, e.g. carboxymethyl cellulose [CMC]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/28—Polysaccharides or their derivatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/02—Alkyl or cycloalkyl ethers
    • C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
    • C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
    • C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C08B15/005—Crosslinking of cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
    • C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
    • C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof

Abstract

Disclosed is a method for producing a water-swellable, generally water-insoluble modified polysaccharide having improved age-stable absorption properties. The method involves forming a mixture of a modified polysaccharide, water, and, optionally, a crosslinking agent, recovering the modified polysaccharide from the mixture and, optionally, heat-treating said recovered modified polysaccharide.
CA002130427A 1993-10-29 1994-08-18 Modified polysaccharides having improved absorbent properties and process for the preparation thereof Expired - Fee Related CA2130427C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/145,453 US5550189A (en) 1992-04-17 1993-10-29 Modified polysaccharides having improved absorbent properties and process for the preparation thereof
US145,453 1993-10-29

Publications (2)

Publication Number Publication Date
CA2130427A1 true CA2130427A1 (en) 1995-04-30
CA2130427C CA2130427C (en) 2005-11-15

Family

ID=22513192

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002130427A Expired - Fee Related CA2130427C (en) 1993-10-29 1994-08-18 Modified polysaccharides having improved absorbent properties and process for the preparation thereof

Country Status (16)

Country Link
US (1) US5550189A (en)
EP (1) EP0739357B1 (en)
JP (1) JPH09504331A (en)
KR (1) KR100331902B1 (en)
CN (1) CN1139437A (en)
AU (1) AU687478B2 (en)
BR (1) BR9407917A (en)
CA (1) CA2130427C (en)
CZ (2) CZ293534B6 (en)
DE (1) DE69434574T2 (en)
ES (1) ES2249765T3 (en)
HU (1) HUT75504A (en)
PL (1) PL317098A1 (en)
RU (1) RU2152403C1 (en)
SK (1) SK49996A3 (en)
WO (1) WO1995011925A1 (en)

Families Citing this family (159)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD940054A1 (en) * 1994-03-23 1995-09-23 Fidia Advanced Biopolymers Srl SULPHATED POLYSACCHARIDES
JP3446375B2 (en) * 1995-03-13 2003-09-16 王子製紙株式会社 Method for producing water-absorbing cellulose material
US5679364A (en) * 1995-06-07 1997-10-21 Lee County Mosquito Control District Compositions and methods for reducing the amount of contaminants in aquatic and terrestrial environments
US5703225A (en) * 1995-12-13 1997-12-30 Kimberly-Clark Worldwide, Inc. Sulfonated cellulose having improved absorbent properties
SE505873C2 (en) * 1996-01-10 1997-10-20 Moelnlycke Ab Process for the production of absorbent materials, absorbent materials and absorbent articles containing the material in question
US6060636A (en) * 1996-09-04 2000-05-09 Kimberly-Clark Worldwide, Inc. Treatment of materials to improve handling of viscoelastic fluids
US6296936B1 (en) 1996-09-04 2001-10-02 Kimberly-Clark Worldwide, Inc. Coform material having improved fluid handling and method for producing
US6028016A (en) * 1996-09-04 2000-02-22 Kimberly-Clark Worldwide, Inc. Nonwoven Fabric Substrates Having a Durable Treatment
US6017832A (en) * 1996-09-04 2000-01-25 Kimberly-Clark Worldwide, Inc. Method and composition for treating substrates for wettability
US6204208B1 (en) 1996-09-04 2001-03-20 Kimberly-Clark Worldwide, Inc. Method and composition for treating substrates for wettability and skin wellness
GB9618565D0 (en) * 1996-09-05 1996-10-16 Bristol Myers Co Wound dressing
DE19654745C5 (en) * 1996-12-30 2004-01-22 Lechner, M.D., Prof. Dr. Biodegradable absorbent, its manufacture and use
US5730876A (en) * 1997-05-30 1998-03-24 Hyang-Ja You Separation and purification of low molecular weight chitosan using multi-step membrane separation process
US6229009B1 (en) * 1997-08-29 2001-05-08 Societe De Conseils De Recherches Et D'applications Scientifiques (S.C.R.A.S.) Polycarboxylic based cross-linked copolymers
US6383960B1 (en) 1997-10-08 2002-05-07 Kimberly-Clark Worldwide, Inc. Layered absorbent structure
US6639120B1 (en) 1997-12-12 2003-10-28 Kimberly-Clark Worldwide, Inc. Structure having balanced pH profile
ZA9810779B (en) * 1997-12-12 1999-09-21 Kimberly Clark Co Structure having balanced pH profile.
US6203680B1 (en) * 1998-02-05 2001-03-20 The United States Of America As Represented By The Secretary Of Commerce Electrophoresis gels
US20040033750A1 (en) * 1998-06-12 2004-02-19 Everett Rob D Layered absorbent structure with a heterogeneous layer region
US6710225B1 (en) 1998-06-15 2004-03-23 Kimberly-Clark Worldwide, Inc. Layered absorbent structure with a zoned basis weight
IT1303738B1 (en) * 1998-11-11 2001-02-23 Aquisitio S P A CARBOXYLATE POLYSACCHARIDE CROSS-LINKING PROCESS.
TR200101898T2 (en) * 1998-12-30 2001-12-21 Kimberly Clark Worldwide, Inc. Kraft wood fibers for carboxyalkyl cellulose.
US6413362B1 (en) 1999-11-24 2002-07-02 Kimberly-Clark Worldwide, Inc. Method of steam treating low yield papermaking fibers to produce a permanent curl
BR9916641A (en) 1998-12-30 2001-09-25 Kimberly Clark Co Steam blast recycling process for fibers and fabrics made from recycled fibers
US6686464B1 (en) * 1999-04-26 2004-02-03 Bki Holding Corporation Cellulose ethers and method of preparing the same
SE518736C2 (en) * 1999-08-30 2002-11-12 Sca Hygiene Prod Ab Absorbent, open-celled foam material with good liquid storage capacity and absorbent structure in an absorbent article
SE514898C2 (en) 1999-08-30 2001-05-14 Sca Hygiene Prod Ab Absorbent structure comprising a compressed regenerated cellulose foam material, method for its preparation, and absorbent articles such as a diaper comprising the structure
US6322724B1 (en) * 2000-01-05 2001-11-27 Isp Investments Inc. Products for controlling evaporative moisture loss and methods of manufacturing the same
US6437214B1 (en) 2000-01-06 2002-08-20 Kimberly-Clark Worldwide, Inc. Layered absorbent structure with a zoned basis weight and a heterogeneous layer region
BR0110918A (en) * 2000-05-15 2004-02-10 Kimberly Clark Co Polysaccharide absorbers and process for providing a water-insoluble and water-insoluble modified polysaccharide that has stable, preferred absorption properties after aging
SE0003125D0 (en) * 2000-09-05 2000-09-05 Astrazeneca Ab Modified polymers
EP1334132A1 (en) * 2000-11-01 2003-08-13 BKI Holding Corporation Cellulose ethers and method of preparing the same
CA2351253A1 (en) * 2000-11-10 2002-05-10 Groupe Lysac Inc./Lysac Group Inc. Crosslinked polysaccharide, obtained by crosslinking with substituted polyethylene glycol, as superabsorbent
DE10125599A1 (en) * 2001-05-25 2002-11-28 Stockhausen Chem Fab Gmbh Super-absorbent polymer powder for use in e.g. diapers, packaging and soil improvers, obtained by pre-swelling polycarboxy-polysaccharide in water and then drying and surface-crosslinking resulting hydrogel
US6500947B1 (en) * 2001-08-24 2002-12-31 Weyerhaeuser Company Superabsorbent polymer
US6998367B2 (en) * 2001-12-06 2006-02-14 Kimberly-Clark Worldwide, Inc. Absorbent composition containing transitional crosslinking points
US20030125683A1 (en) * 2001-12-31 2003-07-03 Reeves William G. Durably hydrophilic, non-leaching coating for hydrophobic substances
US20030155679A1 (en) * 2001-12-31 2003-08-21 Reeves William G. Method of making regenerated carbohydrate foam compositions
US20030143388A1 (en) * 2001-12-31 2003-07-31 Reeves William G. Regenerated carbohydrate foam composition
CA2382419A1 (en) * 2002-04-24 2003-10-24 Le Groupe Lysac Inc. Synergistic blends of polysaccharides as biodegradable absorbent materials or superabsorbents
US20030034136A1 (en) * 2002-07-19 2003-02-20 Neogi Amar N. Superabsorbent cellulosic fiber
US20030035950A1 (en) * 2002-07-19 2003-02-20 Neogi Amar N. Superabsorbent cellulosic fiber
US20030034137A1 (en) * 2002-07-19 2003-02-20 Neogi Amar N. Superabsorbent cellulosic fiber
US20030024663A1 (en) * 2002-07-19 2003-02-06 Neogi Amar N. Superabsorbent cellulosic fiber
US7866394B2 (en) 2003-02-27 2011-01-11 Halliburton Energy Services Inc. Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry
US6983799B2 (en) * 2003-02-27 2006-01-10 Halliburton Energy Services, Inc. Method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation
US6993619B2 (en) * 2003-03-28 2006-01-31 International Business Machines Corporation Single request data transfer regardless of size and alignment
JP4500263B2 (en) * 2003-07-28 2010-07-14 帝人株式会社 Temperature-responsive hydrogel
CA2443059A1 (en) * 2003-09-29 2005-03-29 Le Groupe Lysac Inc. Polysaccharide-clay superabsorbent nanocomposites
US7842382B2 (en) 2004-03-11 2010-11-30 Knauf Insulation Gmbh Binder compositions and associated methods
EP1750769B1 (en) * 2004-05-20 2013-01-23 Mentor Worldwide LLC Methods for making injectable polymer hydrogels
KR100863870B1 (en) 2004-06-21 2008-10-15 에보닉 스톡하우젠 게엠베하 Water absorbing polysaccharide and method for producing the same
CA2481491A1 (en) 2004-09-14 2006-03-14 Le Groupe Lysac Inc. Amidinated or guanidinated polysaccharides, their use as absorbents and a process for producing same
US8603631B2 (en) 2004-10-13 2013-12-10 Knauf Insulation Gmbh Polyester binding compositions
US7642223B2 (en) 2004-10-18 2010-01-05 Halliburton Energy Services, Inc. Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone
US7690429B2 (en) * 2004-10-21 2010-04-06 Halliburton Energy Services, Inc. Methods of using a swelling agent in a wellbore
US7560419B2 (en) * 2004-11-03 2009-07-14 Halliburton Energy Services, Inc. Method and biodegradable super absorbent composition for preventing or treating lost circulation
US20060142478A1 (en) * 2004-12-29 2006-06-29 Mengkui Luo Carboxyalkyl cellulose polymer network
US7541396B2 (en) * 2004-12-29 2009-06-02 Weyerhaeuser Nr Company Method for making carboxyalkyl cellulose
US7393905B2 (en) * 2004-12-29 2008-07-01 Weyerhaeuser Company Crosslinked mixed carboxylated polymer network
US20060142477A1 (en) * 2004-12-29 2006-06-29 Glasser Wolfgang G Method for making sulfoalkylated cellulose polymer network
US20060142481A1 (en) * 2004-12-29 2006-06-29 Herriott Carole W Method for making a mixed polymer network
US7241836B2 (en) * 2004-12-29 2007-07-10 Weyerhaeuser Co. Method of crosslinking a mixture of carboxylated polymers using a triazine crosslinking activator
US20060142484A1 (en) * 2004-12-29 2006-06-29 Glasser Wolfgang G Sulfoalkylated cellulose polymer network
US20060142476A1 (en) * 2004-12-29 2006-06-29 Weerawarna S A Crosslinked carboxylated polymer
US7230049B2 (en) * 2004-12-29 2007-06-12 Weyerhaeuser Co. Method of crosslinking a carboxylated polymer using a triazine crosslinking activator
US7300965B2 (en) 2004-12-29 2007-11-27 Weyerhaeuser Company Mixed polymer network
US20060142561A1 (en) * 2004-12-29 2006-06-29 Mengkui Luo Carboxyalkyl cellulose
US20060142480A1 (en) * 2004-12-29 2006-06-29 Mengkui Luo Method of making carboxyalkyl cellulose polymer network
US7891424B2 (en) 2005-03-25 2011-02-22 Halliburton Energy Services Inc. Methods of delivering material downhole
US20060246186A1 (en) * 2005-04-28 2006-11-02 Nowak Michael J Polycarboxylated polymer, method of making, method of use, and superabsorbent compositions including the same
US7772391B2 (en) * 2005-06-16 2010-08-10 The Procter & Gamble Company Ethersuccinylated hydroxyl polymers
US7870903B2 (en) 2005-07-13 2011-01-18 Halliburton Energy Services Inc. Inverse emulsion polymers as lost circulation material
SI2574640T1 (en) 2005-07-26 2023-05-31 Knauf Insulation Gmbh Binders and materials made therewith
US20070166371A1 (en) * 2005-11-01 2007-07-19 Andries Hanzen Methods of producing films and capsules made from modified carboxymethylcellulose materials
CN101558165B (en) * 2005-11-01 2013-07-03 Cp凯尔科美国股份有限公司 High viscosity diutan gums and methods of producing
US20070258879A1 (en) * 2005-12-13 2007-11-08 Philip Morris Usa Inc. Carbon beads with multimodal pore size distribution
EP2031011A4 (en) * 2006-06-02 2011-08-31 Kaneka Corp Resin powder containing aluminum salt, process for production of the same, and resin composition, phosphorous adsorbent, antibacterial agent or antifungal agent comprising the same
WO2008037082A1 (en) * 2006-09-25 2008-04-03 Archer-Daniels-Midland Company Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same
US7625463B2 (en) 2006-10-02 2009-12-01 Weyerhaeuser Nr Company Methods for the preparation of fibrous superabsorbent composite containing cellulose
US20080081165A1 (en) * 2006-10-02 2008-04-03 Weyerhaeuser Co. Fibrous superabsorbent composite containing cellulose
US7604714B2 (en) * 2006-10-02 2009-10-20 Weyerhaeuser Nr Company Methods for the preparation of crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks
US7785710B2 (en) * 2006-10-02 2010-08-31 Weyerhaeuser Nr Company Superabsorbent particles containing carboxyalkyl cellulose and temporary metal crosslinks
US7717995B2 (en) * 2006-10-02 2010-05-18 Weyerhaeuser Nr Company Methods for the preparation of mixed polymer superabsorbent fibers containing cellulose
US20080147032A1 (en) * 2006-10-02 2008-06-19 Weyerhaeuser Co. Methods for the preparation crosslinked carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks
US20080082065A1 (en) * 2006-10-02 2008-04-03 Weyerhaeuser Co. Mixed polymer superabsorbent fibers containing cellulose
US20080079188A1 (en) * 2006-10-02 2008-04-03 Weyerhaeuser Co. Methods for the preparation of mixed polymer superabsorbent fibers
US7645806B2 (en) * 2006-10-02 2010-01-12 Weyerhaeuser Nr Company Methods for the preparation of superabsorbent particles containing carboxyalkyl cellulose
US20080082069A1 (en) * 2006-10-02 2008-04-03 Jian Qin Absorbent articles comprising carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks
US20080078514A1 (en) * 2006-10-02 2008-04-03 Weyerhaeuser Co. Methods for the preparation of cellulose fibers having superabsorbent particles adhered thereto
US20080082068A1 (en) * 2006-10-02 2008-04-03 Jian Qin Absorbent articles comprising carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks
US20080082066A1 (en) * 2006-10-02 2008-04-03 Weyerhaeuser Co. Crosslinked carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks
KR100785913B1 (en) * 2006-11-29 2007-12-17 한국과학기술연구원 Polymerized beta-cyclodextrin powder and its preparation method
US20100086726A1 (en) 2007-01-25 2010-04-08 Roger Jackson Mineral fibre board
CN101720341B (en) 2007-01-25 2013-06-12 克瑙夫绝缘私人有限公司 Composite wood board
DK2108006T3 (en) 2007-01-25 2020-12-21 Knauf Insulation Gmbh BINDERS AND MATERIALS MADE THEREFORE
CA2683706A1 (en) 2007-04-13 2008-10-23 Knauf Insulation Gmbh Composite maillard-resole binders
US7749317B2 (en) 2007-06-25 2010-07-06 Weyerhaeuser Nr Company Fibrous blend and method of making
US7591891B2 (en) * 2007-06-25 2009-09-22 Weyerhaeuser Nr Company Fibrous blend and methods of preparation
GB0715100D0 (en) 2007-08-03 2007-09-12 Knauf Insulation Ltd Binders
WO2009022358A1 (en) * 2007-08-10 2009-02-19 Luigi Ambrosio Superabsorbent polymer hydro gels and a method of preparing thereof
US8039683B2 (en) * 2007-10-15 2011-10-18 Kimberly-Clark Worldwide, Inc. Absorbent composites having improved fluid wicking and web integrity
EP2108676B1 (en) 2008-04-03 2017-12-27 OrganoClick AB Crosslinked paper based material
JP5833919B2 (en) 2008-04-24 2015-12-16 メドトロニック，インコーポレイテッド Protective gel based on chitosan and oxidized polysaccharide
EP2313104B2 (en) * 2008-04-24 2020-08-26 Medtronic, Inc Thiolated chitosan gel
CA2722145A1 (en) * 2008-04-24 2009-10-29 Medtronic, Inc. Rehydratable thiolated polysaccharide particles and sponge
AU2009240513B2 (en) * 2008-04-24 2015-03-26 Medtronic, Inc. Chitosan-containing protective composition
US8653319B2 (en) 2008-04-24 2014-02-18 Medtronic, Inc. Cold ionizing radiation sterilization
US20090326180A1 (en) * 2008-06-30 2009-12-31 Weyerhaeuser Co. Biodegradable Superabsorbent Particles Containing Cellulose Fiber
US7833384B2 (en) * 2008-06-30 2010-11-16 Weyerhaeuser Nr Company Method for making fiber having biodegradable superabsorbent particles attached thereto
US7959762B2 (en) * 2008-06-30 2011-06-14 Weyerhaeuser Nr Company Method for making biodegradable superabsorbent particles
US8084391B2 (en) * 2008-06-30 2011-12-27 Weyerhaeuser Nr Company Fibers having biodegradable superabsorbent particles attached thereto
US20090325797A1 (en) * 2008-06-30 2009-12-31 Weyerhaeuser Co. Biodegradable Superabsorbent Particles
US8641869B2 (en) * 2008-06-30 2014-02-04 Weyerhaeuser Nr Company Method for making biodegradable superabsorbent particles
US8101543B2 (en) * 2008-06-30 2012-01-24 Weyerhaeuser Nr Company Biodegradable superabsorbent particles
US8361926B2 (en) * 2008-11-25 2013-01-29 Evonik Stockhausen, Llc Water-absorbing polysaccharide and method for producing the same
WO2010096742A2 (en) 2009-02-20 2010-08-26 Archer Daniels Midland Company Acidic gas permeated carboxyalkyl starch particles, extrudates, and process for making the same
US20100215723A1 (en) * 2009-02-20 2010-08-26 Min Yao Wound Dressing with Antimicrobial Gauze and Bonding Agent
CA2770396A1 (en) 2009-08-07 2011-02-10 Knauf Insulation Molasses binder
JP5771360B2 (en) * 2010-04-06 2015-08-26 花王株式会社 Method for producing powdered polysaccharide derivative
EA025773B1 (en) 2010-05-07 2017-01-30 Кнауф Инзулацьон Method of making fibers bound by cured polymeric binder, composition and composite wood board
CN103025777B (en) 2010-05-07 2016-01-20 克瑙夫绝缘私人有限公司 Carbohydrate binder and the material prepared with it
CA2801546C (en) 2010-06-07 2018-07-10 Knauf Insulation Fiber products having temperature control additives
CN101908241B (en) * 2010-08-03 2012-05-16 广州广电运通金融电子股份有限公司 Method and system for identifying valued documents
CA2834816C (en) 2011-05-07 2020-05-12 Knauf Insulation Liquid high solids binder composition
JP6177233B2 (en) 2011-06-07 2017-08-09 ジェレシス エルエルシー Method for producing a hydrogel
US20130000900A1 (en) 2011-07-01 2013-01-03 Halliburton Energy Services, Inc. Down-hole placement of water-swellable polymers
GB201206193D0 (en) 2012-04-05 2012-05-23 Knauf Insulation Ltd Binders and associated products
GB201214734D0 (en) 2012-08-17 2012-10-03 Knauf Insulation Ltd Wood board and process for its production
CA2892900C (en) 2012-12-05 2020-08-11 Benedicte Pacorel Method for manufacturing an article comprising a collection of matter bound by a cured binder
US9328459B2 (en) * 2013-03-29 2016-05-03 Weyerhaeuser Nr Company Multi-stage catalytic carboxylation of mercerized cellulose fibers
CA2938154C (en) 2014-02-07 2022-11-01 Knauf Insulation, Inc. Uncured articles with improved shelf-life
GB201408909D0 (en) 2014-05-20 2014-07-02 Knauf Insulation Ltd Binders
CN115381850A (en) 2014-06-20 2022-11-25 吉莱斯公司 Method for treating overweight or obesity
CN104262649A (en) * 2014-09-28 2015-01-07 泸州北方化学工业有限公司 Sodium croscarmellose and preparation method thereof
AU2016211329B2 (en) 2015-01-29 2020-08-27 Gelesis Llc Method for producing hydrogels coupling high elastic modulus and absorbance
GB201517867D0 (en) 2015-10-09 2015-11-25 Knauf Insulation Ltd Wood particle boards
JP7132128B2 (en) 2016-04-25 2022-09-06 ジェレシス，エルエルシー How to treat constipation
GB201610063D0 (en) 2016-06-09 2016-07-27 Knauf Insulation Ltd Binders
EP3471874B1 (en) 2016-06-17 2020-03-18 TRuCapSol, LLC. Controlled release particles and methods for preparation thereof
GB201701569D0 (en) 2017-01-31 2017-03-15 Knauf Insulation Ltd Improved binder compositions and uses thereof
CA3058740A1 (en) 2017-04-05 2018-10-11 Gelesis, Llc Improved superabsorbent materials and methods of production thereof
WO2019173062A1 (en) 2018-03-07 2019-09-12 Trucapsol, Llc Reduced permeability microcapsules
RU2749062C1 (en) * 2018-03-26 2021-06-03 Эссити Хайджин Энд Хелт Актиеболаг Disposable absorbent hygiene product containing absorbent unit
US11925536B2 (en) * 2018-03-26 2024-03-12 Essity Hygiene And Health Aktiebolag Disposable absorbent hygiene product with topsheet and acquisition layer
GB201804908D0 (en) 2018-03-27 2018-05-09 Knauf Insulation Ltd Binder compositions and uses thereof
GB201804907D0 (en) 2018-03-27 2018-05-09 Knauf Insulation Ltd Composite products
US11344502B1 (en) 2018-03-29 2022-05-31 Trucapsol Llc Vitamin delivery particle
US11794161B1 (en) 2018-11-21 2023-10-24 Trucapsol, Llc Reduced permeability microcapsules
US11571674B1 (en) 2019-03-28 2023-02-07 Trucapsol Llc Environmentally biodegradable microcapsules
CN109971043B (en) * 2019-04-03 2021-02-19 郑州大学 Preparation method and application of chitosan-polyvinyl alcohol-iron composite membrane
US11542392B1 (en) 2019-04-18 2023-01-03 Trucapsol Llc Multifunctional particle additive for enhancement of toughness and degradation in biodegradable polymers
US11465117B2 (en) 2020-01-30 2022-10-11 Trucapsol Llc Environmentally biodegradable microcapsules
RU2746504C1 (en) * 2020-02-27 2021-04-14 Ниармедик Интернэшнл Лимитед Antimicrobial agents based on beta-glucans, methods for their preparation and application
CN114108366B (en) * 2021-12-06 2023-08-08 广东盈通纸业有限公司 Preparation method of high-barrier high-wet-strength functional paper
WO2023190875A1 (en) * 2022-03-31 2023-10-05 長瀬産業株式会社 Method for producing water absorbent resin
US11878280B2 (en) 2022-04-19 2024-01-23 Trucapsol Llc Microcapsules comprising natural materials
WO2024049271A1 (en) * 2022-09-01 2024-03-07 주식회사 엘지화학 Polymer composition
US11904288B1 (en) 2023-02-13 2024-02-20 Trucapsol Llc Environmentally biodegradable microcapsules

Family Cites Families (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA731146A (en) * 1966-03-29 W. Anderson Arthur Insolubilization of water-soluble cellulose ethers
US1682294A (en) * 1928-08-28 chemistry
US1884629A (en) * 1929-11-20 1932-10-25 Dreyfus Henry Treatment of cellulose and derivatives thereof
US1938360A (en) * 1930-07-02 1933-12-05 Ici Ltd Manufacture of alkyl ethers of cellulose
US2131733A (en) * 1935-02-01 1938-10-04 Du Pont Cellulose derivatives
US2096681A (en) * 1935-04-27 1937-10-19 Hercules Powder Co Ltd Method for the preparation of cellulose ethers
US2181264A (en) * 1936-07-16 1939-11-28 Dreyfus Henry Manufacture of cellulose derivatives
US2110526A (en) * 1937-01-09 1938-03-08 Hercules Powder Co Ltd Method for the preparation of cellulose ethers
US2170009A (en) * 1937-02-12 1939-08-22 Eastman Kodak Co Preparation of cellulose ethers
US2137343A (en) * 1937-08-30 1938-11-22 Du Pont Chemical process
US2159376A (en) * 1938-07-19 1939-05-23 Dow Chemical Co Making of low viscosity cellulose ethers
US2236545A (en) * 1938-10-08 1941-04-01 Du Pont Cellulose glycolic acid
US2236523A (en) * 1939-10-03 1941-04-01 Du Pont Cellulose ethers
US2278612A (en) * 1941-03-28 1942-04-07 Dow Chemical Co Method of making cellulose glycollic acid
US2517577A (en) * 1946-12-10 1950-08-08 Hercules Powder Co Ltd Preparation of carboxyalkyl ethers of cellulose
US2523377A (en) * 1946-12-24 1950-09-26 Hercules Powder Co Ltd Preparation of cellulose ethers
US2486805A (en) * 1947-10-08 1949-11-01 Henry H Frede And Company Diapers and like sheetlike materials
US2524024A (en) * 1947-10-16 1950-09-26 Dow Chemical Co Method of making carboxymethyl cellulose
US2639239A (en) * 1950-11-18 1953-05-19 Hercules Powder Co Ltd Heat-treated alkali-metal carboxymethyl cellulose and process of preparing it
US2680737A (en) * 1951-05-17 1954-06-08 Hercules Powder Co Ltd Alkali cellulose preparation
US2772999A (en) * 1952-06-06 1956-12-04 Johnson & Johnson Hemostatic surgical compositions and dressings
US2773000A (en) * 1952-06-06 1956-12-04 Johnson & Johnson Hemostatic surgical dressings
US2976278A (en) * 1956-10-01 1961-03-21 Du Pont Process for the manufacture of carboxymethyl cellulose involving 3-component, 2-phase liquid reaction medium
US3055369A (en) * 1957-08-15 1962-09-25 Personal Products Corp Absorbent product
DE1239284B (en) * 1963-01-23 1967-04-27 Vaessen Schoemaker Holding Bv Process for the preparation of carboxymethyl derivatives of amylose or starch which are readily gellable in water
US3229769A (en) * 1963-01-28 1966-01-18 Dow Chemical Co Method for controlling the spread of fire
GB1086323A (en) * 1963-07-18 1967-10-11 Courtaulds Ltd Derivative of carboxy methyl cellulose
US3347236A (en) * 1963-12-02 1967-10-17 Torr David Disposable article having a layer of artificial absorbent fibers and supporting sheet
US3339550A (en) * 1964-04-07 1967-09-05 Kimberly Clark Co Sanitary napkin with cross-linked cellulosic layer
US3347855A (en) * 1964-08-04 1967-10-17 Buckeye Cellulose Corp Acetone slurry process for the preparation of soluble carboxymethyl cellulose
US3379720A (en) * 1964-10-12 1968-04-23 Hercules Inc Water-soluble polymers and process of preparing
US3423167A (en) * 1964-12-15 1969-01-21 Fmc Corp Wet state cross-linking of carboxyalkyl cellulose ether modified regenerated cellulose fibers
US3589364A (en) * 1968-03-14 1971-06-29 Buckeye Cellulose Corp Bibulous cellulosic fibers
US3551410A (en) * 1969-03-27 1970-12-29 Int Paper Canada Method of increasing the water-retentivity of cellulose fibers and the product produced thereby
US3618607A (en) * 1970-02-17 1971-11-09 Johnson & Johnson Saline fluid absorption and retention tampons and methods of making the same
US3678031A (en) * 1970-10-21 1972-07-18 Buckeye Cellulose Corp Slurry process for the production of absorptive carboxy methyl cellulose fibers
US3723413A (en) * 1970-10-26 1973-03-27 Personal Products Co Water-insoluble fluid-absorptive and retentive materials and methods of making the same
US3858585A (en) * 1971-03-22 1975-01-07 Personal Products Co Fluid absorption and retention products and methods of making the same
US3731686A (en) * 1971-03-22 1973-05-08 Personal Products Co Fluid absorption and retention products and methods of making the same
US3826711A (en) * 1972-04-17 1974-07-30 Buckeye Cellulose Corp Sheeted cellulose derivative fibers
US3847636A (en) * 1972-06-05 1974-11-12 Fmc Corp Absorbent alloy fibers of salts of carboxyalkylated starch and regenerated cellulose
US3844287A (en) * 1972-06-05 1974-10-29 Fmc Corp Absorbent mass of alloy fibers of regenerated cellulose and polyacrylic acid salt of alkali-metals or ammonium
US4041121A (en) * 1972-11-24 1977-08-09 Avtex Fibers Inc. Method for making high fluid-holding fiber mass
DE2357079C2 (en) * 1973-11-15 1982-07-29 Hoechst Ag, 6000 Frankfurt Process for the production of cellulose ethers which absorb water but are more than 50% insoluble therein
DE2358150C2 (en) * 1973-11-22 1982-03-18 Hoechst Ag, 6000 Frankfurt Process for the production of cellulose ethers which absorb water but are more than 50% insoluble therein
US3935099A (en) * 1974-04-03 1976-01-27 The United States Of America As Represented By The Secretary Of Agriculture Method of reducing water content of emulsions, suspensions, and dispersions with highly absorbent starch-containing polymeric compositions
US3981100A (en) * 1974-04-03 1976-09-21 The United States Of America As Represented By The Secretary Of Agriculture Highly absorbent starch-containing polymeric compositions
US4090013A (en) * 1975-03-07 1978-05-16 National Starch And Chemical Corp. Absorbent composition of matter
US3971379A (en) * 1975-04-04 1976-07-27 Personal Products Company Absorbent hydrophilic cellulosic product
DE2520336A1 (en) * 1975-05-07 1976-11-18 Hoechst Ag PROCESS FOR PRODUCING WATER-ABSORBING BUT INSOLUBLE CELLULOSE ETHERS
DE2520337A1 (en) * 1975-05-07 1976-11-18 Hoechst Ag PROCESS FOR PRODUCING WATER-ABSORBING BUT INSOLUBLE CELLULOSE ETHERS
US4043952A (en) * 1975-05-09 1977-08-23 National Starch And Chemical Corporation Surface treatment process for improving dispersibility of an absorbent composition, and product thereof
US4044766A (en) * 1976-02-27 1977-08-30 Kimberly-Clark Corporation Compressed catamenial tampons with improved capabilities for absorbing menstrual fluids
GB1550614A (en) * 1976-06-28 1979-08-15 Unilever Ltd Absorbent materials
DE2634539C2 (en) * 1976-07-31 1983-08-25 Hoechst Ag, 6230 Frankfurt Process for the production of absorbent, modified starch ethers and their use
SE430609B (en) * 1976-12-21 1983-11-28 Sca Development Ab SET TO CELLULOUS DERIVATIVES MAKE ABSORBING MATERIAL
US4169121A (en) * 1977-09-09 1979-09-25 Helmut Pietsch Absorbent material for aqueous physiological fluids and process for its production
US4127944A (en) * 1977-10-17 1978-12-05 National Starch And Chemical Corporation Method for drying water-absorbent compositions
US4195175A (en) * 1978-01-03 1980-03-25 Johnson Edwin L Process for the manufacture of chitosan
US4155888A (en) * 1978-04-17 1979-05-22 A. E. Staley Manufacturing Company Water-absorbent starches
US4200736A (en) * 1978-05-17 1980-04-29 International Playtex, Inc. Preparation of water-insoluble carboxymethyl cellulose absorbents
USRE31323E (en) * 1978-05-17 1983-07-26 International Playtex, Inc. Preparation of water-insoluble carboxymethyl cellulose absorbents
US4252761A (en) * 1978-07-14 1981-02-24 The Buckeye Cellulose Corporation Process for making spontaneously dispersible modified cellulosic fiber sheets
JPS55134646A (en) * 1979-04-06 1980-10-20 Kureha Chem Ind Co Ltd Amphoteric ion exchanger
IT1121850B (en) * 1979-06-20 1986-04-23 Montedison Spa POL-CARBOSSI-ALCHIL-CELLULOSE WITH FLUID RETECTION AND PROCESS FOR THEIR PREPARATION
JPS5684701A (en) * 1979-12-14 1981-07-10 Kohjin Co Ltd Production of absorbing material
US4454055A (en) * 1980-08-25 1984-06-12 National Starch And Chemical Corporation Absorbent composition of matter, process for preparing same and article prepared therefrom
US4404371A (en) * 1981-01-14 1983-09-13 Battelle Memorial Institute Carboxymethylcellulose with carbonate bridges and preparation thereof
JPS6015641B2 (en) * 1981-03-18 1985-04-20 花王株式会社 Method for producing fibrous carboxymethyl cellulose
FR2510628B1 (en) * 1981-08-03 1985-07-12 Personal Products Co STABILIZED ABSORBENT SHEET, ESPECIALLY FOR HYGIENIC PADS AND LAYERS
US4483950A (en) * 1982-12-10 1984-11-20 The United States Of America As Represented By The Secretary Of Agriculture Modified starches as extenders for absorbent polymers
US4521594A (en) * 1983-05-20 1985-06-04 Daicel Chemical Industries, Ltd. Process for producing sodium carboxymethylcellulose
JPS60177001A (en) * 1984-02-21 1985-09-11 Daicel Chem Ind Ltd Preparation of water-insoluble alkali salt of carboxymethyl cellulose ether
US4734478A (en) * 1984-07-02 1988-03-29 Nippon Shokubai Kagaku Kogyo Co., Ltd. Water absorbing agent
US4683298A (en) * 1985-01-10 1987-07-28 British Columbia Research Council Process for the preparation of aminated polysaccharide derivatives
US4689408A (en) * 1985-05-14 1987-08-25 Hercules Incorporated Method of preparing salts of carboxymethylcellulose
US4650716A (en) * 1985-05-14 1987-03-17 Hercules Incorporated Novel salts of carboxymethylcellulose
JPS61293228A (en) * 1985-06-21 1986-12-24 Arakawa Chem Ind Co Ltd Production of water-absorptive resin
JPS62141001A (en) * 1985-12-13 1987-06-24 Dai Ichi Kogyo Seiyaku Co Ltd Production of water-soluble alkali metal salt of carboxyalkylcellulose
DE3742106A1 (en) * 1987-12-11 1989-06-22 Wolff Walsrode Ag CARBOXYMETHYLSULFOETHYL CELLULOSE AND PROCESS FOR THE PRODUCTION THEREOF
US5147343B1 (en) * 1988-04-21 1998-03-17 Kimberly Clark Co Absorbent products containing hydrogels with ability to swell against pressure
IT1219587B (en) * 1988-05-13 1990-05-18 Fidia Farmaceutici SELF-CROSS-LINKED CARBOXYLY POLYSACCHARIDES
US4820307A (en) * 1988-06-16 1989-04-11 The United States Of America As Represented By The Secretary Of Agriculture Catalysts and processes for formaldehyde-free durable press finishing of cotton textiles with polycarboxylic acids
ATA255988A (en) * 1988-10-14 1993-05-15 Chemie Linz Gmbh ABSORBENT POLYMER
DE3905806A1 (en) * 1989-01-30 1990-09-06 Lentia Gmbh METHOD FOR CONTINUOUS DRYING OF HYDROPHILIC POLYMER GELS
US5002986A (en) * 1989-02-28 1991-03-26 Hoechst Celanese Corporation Fluid absorbent compositions and process for their preparation
US4952550A (en) * 1989-03-09 1990-08-28 Micro Vesicular Systems, Inc. Particulate absorbent material
US5126382A (en) * 1989-06-28 1992-06-30 James River Corporation Superabsorbent compositions and a process for preparing them
BR8904238A (en) * 1989-08-23 1991-02-26 Johnson & Johnson Sa SUPERABSORVENT MATERIAL, ABSORBENT STRUCTURE, ABSORBENT ARTICLE AND PROCESS FOR PREPARING THE SAID SUPERABSROVENT MATERIAL
US5079354A (en) * 1989-10-27 1992-01-07 Kimberly-Clark Corporation Method for making absorbent starch
US5137537A (en) * 1989-11-07 1992-08-11 The Procter & Gamble Cellulose Company Absorbent structure containing individualized, polycarboxylic acid crosslinked wood pulp cellulose fibers
US5149335A (en) * 1990-02-23 1992-09-22 Kimberly-Clark Corporation Absorbent structure
JPH04120142A (en) * 1990-09-11 1992-04-21 Agency Of Ind Science & Technol Biodegradable composite material and production thereof
GB9107952D0 (en) * 1991-04-15 1991-05-29 Dow Rheinmuenster Surface crosslinked and surfactant coated absorbent resin particles and method of preparation
CA2073292C (en) * 1991-10-25 2004-06-29 Xin Ning Carboxyalkyl polysaccharides having improved absorbent properties and process for the preparation thereof
US5247072A (en) * 1991-10-25 1993-09-21 Kimberly-Clark Corporation Carboxyalkyl polysaccharides having improved absorbent properties and process for the preparation thereof
FR2687499B1 (en) * 1992-02-13 1994-04-15 Elf Atochem Sa PROCESS FOR THE CONDITIONING OF ION EXCHANGE RESINS CONTAMINATED BY RADIOACTIVE ELEMENTS.
CA2072918A1 (en) * 1992-02-14 1993-08-15 Jian Qin Modified polysaccharides having improved absorbent properties and process for the preparation thereof
CA2076732C (en) * 1992-04-17 2006-05-09 Kimberly-Clark Worldwide, Inc. Modified polysaccharides having improved absorbent properties and process for the preparation thereof

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RU2152403C1 (en) 2000-07-10
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PL317098A1 (en) 1997-03-17
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