CA2529199A1 - Method for making carboxyalkyl cellulose - Google Patents

Method for making carboxyalkyl cellulose Download PDF

Info

Publication number
CA2529199A1
CA2529199A1 CA002529199A CA2529199A CA2529199A1 CA 2529199 A1 CA2529199 A1 CA 2529199A1 CA 002529199 A CA002529199 A CA 002529199A CA 2529199 A CA2529199 A CA 2529199A CA 2529199 A1 CA2529199 A1 CA 2529199A1
Authority
CA
Canada
Prior art keywords
pulp
cellulose
carboxyalkyl cellulose
carboxyalkyl
acid salt
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
CA002529199A
Other languages
French (fr)
Other versions
CA2529199C (en
Inventor
Mengkui Luo
Amar N. Neogi
Andrew J. Dodd
S. Ananda Weerawarna
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.)
International Paper Canada Pulp Holdings ULC
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of CA2529199A1 publication Critical patent/CA2529199A1/en
Application granted granted Critical
Publication of CA2529199C publication Critical patent/CA2529199C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Paper (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Methods for making the carboxyalkyl cellulose.

Claims (20)

1. A method for making a carboxyalkyl cellulose, comprising treating a pulp having a kappa value of from about 1 to about 65 with a carboxyalkylating agent to provide a carboxyalkyl cellulose.
2. The method of Claim 1, wherein the pulp is a never-dried pulp.
3. The method of Claim 1, wherein the carboxyalkylating agent is chloroacetic acid, a chloroacetic acid salt, 3-chloropropionic acid, or a 3-chloropropionic acid salt.
4. The method of Claim 1, wherein the carboxyalkyl cellulose has a degree of carboxy substitution from about 0.4 to about 1.4.
5. The method of Claim 1, wherein the pulp has a lignin content of from about 0.15 to about 10 percent by weight of the cellulose.
6. The method of Claim 1, wherein the pulp has a hemicellulose content of from about 0.1 to about 17 percent by weight of the cellulose.
7. The method of Claim 1 further comprising crosslinking the carboxyalkyl cellulose to provide a crosslinked carboxyalkyl cellulose.
8. A method for making carboxyalkyl cellulose, comprising:
(a) alkalizing a pulp having a kappa value of from about 1 to about 65 to provide an alkalized pulp; and (b) etherifying the alkalized pulp with a carboxyalkylating agent to provide a carboxyalkyl cellulose.
9. The method of Claim 8, wherein the pulp is a never-dried pulp.
10. The method of Claim 8, wherein the carboxyalkylating agent is chloroacetic acid, a chloroacetic acid salt, 3-chloropropionic acid, or a 3-chloropropionic acid salt.
11. The method of Claim 8, wherein the carboxyalkyl cellulose is carboxymethyl cellulose or carboxyethyl cellulose.
12. The method of Claim 8, wherein the carboxyalkyl cellulose has a degree of carboxy substitution from about 0.4 to about 1.4.
13. The method of Claim 8, wherein the pulp has a lignin content of from about 0.15 to about 10 percent by weight of the cellulose.
14. The method of Claim 8, wherein the pulp has a hemicellulose content of from about 0.1 to about 17 percent by weight of the cellulose.
15. The method of Claim 8 further comprising crosslinking the carboxyalkyl cellulose to provide a crosslinked carboxyalkyl cellulose.
16. A method for making carboxyalkyl cellulose, comprising:
(a) crosslinking a pulp having a kappa value of from about 1 to about 65 to provide a crosslinked pulp;
(b) alkalizing the crosslinked pulp to provide an alkalized pulp; and (c) etherifying the alkalized pulp with a carboxyalkylating agent to provide a carboxyalkyl cellulose.
17. The method of Claim 16, wherein the pulp is a never-dried pulp.
18. The method of Claim 16, wherein the carboxyalkylating agent is chloroacetic acid, a chloroacetic acid salt, 3-chloropropionic acid, or a 3-chloropropionic acid salt.
19. The method of Claim 16, wherein the carboxyalkyl cellulose is carboxymethyl cellulose or carboxyethyl cellulose.
20. The method of Claim 16, wherein the carboxyalkyl cellulose has a degree of carboxy substitution from about 0.4 to about 1.4.
CA002529199A 2004-12-29 2005-12-09 Method for making carboxyalkyl cellulose Active CA2529199C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/026,291 US7541396B2 (en) 2004-12-29 2004-12-29 Method for making carboxyalkyl cellulose
US11/026,291 2004-12-29

Publications (2)

Publication Number Publication Date
CA2529199A1 true CA2529199A1 (en) 2006-06-29
CA2529199C CA2529199C (en) 2009-12-08

Family

ID=36263759

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002529199A Active CA2529199C (en) 2004-12-29 2005-12-09 Method for making carboxyalkyl cellulose

Country Status (7)

Country Link
US (1) US7541396B2 (en)
EP (1) EP1676864B1 (en)
JP (1) JP2006188698A (en)
KR (1) KR20060076243A (en)
CN (1) CN1796654A (en)
CA (1) CA2529199C (en)
MX (1) MXPA05013773A (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080082068A1 (en) * 2006-10-02 2008-04-03 Jian Qin Absorbent articles comprising 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
US20080082069A1 (en) * 2006-10-02 2008-04-03 Jian Qin Absorbent articles comprising carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks
US20080147026A1 (en) * 2006-12-15 2008-06-19 Jian Qin Absorbent fiber with a low absorbent capacity and slow absorption rate
MX2010001629A (en) * 2007-08-10 2010-08-09 Alessandro Sannino Polymer hydrogels and methods of preparation thereof.
US8039683B2 (en) * 2007-10-15 2011-10-18 Kimberly-Clark Worldwide, Inc. Absorbent composites having improved fluid wicking and web integrity
JP5430091B2 (en) * 2008-07-09 2014-02-26 旭化成せんい株式会社 Superabsorbent resin and method for producing the same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
ES2752755T3 (en) 2009-05-28 2020-04-06 Gp Cellulose Gmbh Kraft chemical fiber modified cellulose and methods of production and use thereof
MY162376A (en) * 2009-08-05 2017-06-15 Shell Int Research Method for monitoring a well
ES2955492T3 (en) 2009-08-05 2023-12-01 Int Paper Co Process for applying a composition containing a cationic trivalent metal and a release agent and fluff pulp sheet manufactured therefrom
CA2770082C (en) 2009-08-05 2014-09-30 International Paper Company Dry fluff pulp sheet additive
AT508688B8 (en) 2009-08-28 2011-10-15 Chemiefaser Lenzing Ag CARBOXYETHYL CELLULOSE FIBERS, THEIR USE IN WOUND ALLOYS AND HYGIENE ITEMS AND METHOD FOR THE PRODUCTION THEREOF
JP5711456B2 (en) * 2009-11-17 2015-04-30 旭化成せんい株式会社 Carboxyl ethyl cellulose, method for producing the same, and article containing the carboxyl ethyl cellulose
JP2011140534A (en) * 2010-01-05 2011-07-21 Kao Corp High water-absorbing polymer
JP5622412B2 (en) * 2010-03-19 2014-11-12 国立大学法人京都大学 Molding material and manufacturing method thereof
US8465624B2 (en) 2010-07-20 2013-06-18 International Paper Company Composition containing a multivalent cationic metal and amine-containing anti-static agent and methods of making and using
CN103003488B (en) 2010-07-22 2015-04-15 国际纸业公司 Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same
WO2012064741A2 (en) * 2010-11-09 2012-05-18 Board Of Regents Of The University Of Nebraska Method for the production of substituted polysaccharides via reactive extrusion
WO2012170183A1 (en) 2011-05-23 2012-12-13 Gp Cellulose Gmbh Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
CN102295706A (en) * 2011-09-05 2011-12-28 安徽山河药用辅料股份有限公司 Method for preparing croscarmellose sodium medicinal auxiliary material by using wood fibers
EP2802708B1 (en) 2012-01-12 2020-12-23 GP Cellulose GmbH A low viscosity kraft fiber having reduced yellowing properties and methods of making and using the same
CN102605461B (en) * 2012-02-23 2013-10-16 四川大学 Method for preparing protein/polyving akohol composite fiber by utilizing polybasic carboxylic acid as cross linking agent
JP5920069B2 (en) * 2012-03-30 2016-05-18 住友ベークライト株式会社 Lignin resin composition and lignin resin molding material
CA2869287C (en) * 2012-04-05 2020-08-04 Stora Enso Oyj Method for the preparation of cellulose ethers with a high solids process, product obtained and uses of the product
CN106968127B (en) 2012-04-18 2019-03-01 Gp纤维素股份有限公司 Needlebush kraft pulp for viscose solution
JP6472758B2 (en) 2013-02-08 2019-02-20 ゲーペー ツェルローゼ ゲーエムベーハー Softwood kraft fiber with improved α-cellulose content and its use in the production of chemical cellulose products
EP2971334A2 (en) 2013-03-14 2016-01-20 GP Cellulose GmbH A method of making highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process
US9951470B2 (en) 2013-03-15 2018-04-24 Gp Cellulose Gmbh Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same
US9127408B2 (en) * 2014-01-31 2015-09-08 Kimberly-Clark Worldwide, Inc. Tissue having reduced hydrogen bonding
US9926665B2 (en) 2016-02-25 2018-03-27 International Paper Company Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
WO2018093697A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
KR102600854B1 (en) * 2017-12-28 2023-11-10 롯데정밀화학 주식회사 Method of manufacturing cellulose derivative particles, cellulose derivative particles and absorbent articles including the same
CN110552234B (en) * 2018-05-30 2022-02-15 华南理工大学 Super folding-resistant, high-haze and high-transparency paper and preparation method thereof
US11352748B2 (en) 2018-07-31 2022-06-07 International Paper Company Crosslinked pulps, cellulose ether products made therefrom; and related methods of making pulps and cellulose ether products
CN109575673B (en) 2019-01-14 2020-11-17 四川大学 Functional ink suitable for 3D printing and preparation method thereof

Family Cites Families (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811519A (en) * 1954-02-05 1957-10-29 Eastman Kodak Co Mixed cellulose ethers and their preparation
DE1617748A1 (en) * 1966-08-06 1971-04-08 Rajewsky Boris Prof Dr Rheumatism diagnostic
US3638698A (en) * 1966-09-30 1972-02-01 Us Navy Crosslinked carboxymethyl cellulose nitrates propellants
US3589364A (en) * 1968-03-14 1971-06-29 Buckeye Cellulose Corp Bibulous cellulosic fibers
US3900463A (en) * 1968-12-14 1975-08-19 Dai Ichi Kogyo Seiyaku Co Ltd Process for preparing alkali carboxymethyl cellulose
US3723413A (en) * 1970-10-26 1973-03-27 Personal Products Co Water-insoluble fluid-absorptive and retentive materials and methods of making the same
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
US4063018A (en) * 1975-04-07 1977-12-13 Daicel Ltd. Process for preparing alkali metal salt of carboxymethyl cellulose ether
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
US4043921A (en) * 1975-09-10 1977-08-23 Phillips Petroleum Company Cellulose ether-polyacrylamide aqueous gels
DE2543187C2 (en) * 1975-09-27 1982-05-06 Hoechst Ag, 6000 Frankfurt Process for the production of cellulose ethers which absorb water but are largely insoluble therein
US4254258A (en) * 1979-03-28 1981-03-03 Texas A & M University System Process for the preparation of cellulose ether derivatives
US4418524A (en) * 1980-06-19 1983-12-06 Kao Soap Co., Ltd. Twisted yarn and twisted bundle of yarns
DE3034169A1 (en) * 1980-09-11 1982-04-15 Rudolf 6670 St Ingbert Marx WATER ADSORBING INSERT FOR FOOD PACKS
JPS6056724B2 (en) * 1980-10-22 1985-12-11 株式会社クラレ Manufacturing method of water absorbent resin
DE3303153A1 (en) * 1983-01-31 1984-08-02 Henkel KGaA, 4000 Düsseldorf METHOD FOR PRODUCING HIGHLY SUBSTITUTED CARBOXYALKYLCELLULOS AND THEIR MIXING ETHERS
US4547570A (en) * 1983-10-20 1985-10-15 The Dow Chemical Company Process for preparing cellulose ethers
DE3417952A1 (en) * 1984-05-15 1985-11-21 Hoechst Ag, 6230 Frankfurt METHOD FOR PRODUCING WATER-SOLUBLE CELLULOSE MIXERS
US4734478A (en) * 1984-07-02 1988-03-29 Nippon Shokubai Kagaku Kogyo Co., Ltd. Water absorbing agent
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
DE3668553D1 (en) * 1985-06-22 1990-03-08 Taiyo Fishery Co Ltd AQUEOUS COMPOSITION, METHOD FOR PRODUCING A WATER-ABSORBING POLYMER AND ITEM COVERED ITEM.
CA1280398C (en) * 1986-02-05 1991-02-19 Hideharu Shirai Water-absorbent resin and process for producing the same
US4783510A (en) * 1986-06-04 1988-11-08 Taiyo Fishery Co., Ltd. Process for improving a water absorbent polyacrylic acid polymer and an improved polymer produced by said process
DE3742105A1 (en) * 1987-12-11 1989-06-22 Wolff Walsrode Ag USE OF CELLULOSE DERIVATIVES IN DRILL RINSING
US5221722A (en) * 1988-11-28 1993-06-22 The B. F. Goodrich Company Crosslinked polyacrylic acid
US5194388A (en) * 1989-07-10 1993-03-16 Westvaco Corporation "Kappa" number calibration standard
US5324823A (en) * 1991-03-26 1994-06-28 Otsuka Pharmaceutical Factory, Inc. Adsorbent for cellular fibronectin and a method for fractional purification of fibronectin
GR920100122A (en) * 1991-04-05 1993-03-16 Ethicon Inc Ionically crosslinked carboxyl-containing polysaccharides for adhension prevention.
NZ242792A (en) * 1991-05-24 1993-12-23 Union Camp Patent Holding Two-stage pulp bleaching reactor: pulp mixed with ozone in first stage.
US5247072A (en) * 1991-10-25 1993-09-21 Kimberly-Clark Corporation Carboxyalkyl polysaccharides having improved absorbent properties and process for the preparation thereof
GB9126193D0 (en) * 1991-12-10 1992-02-12 Courtaulds Plc Cellulosic fibres
CA2072918A1 (en) * 1992-02-14 1993-08-15 Jian Qin Modified polysaccharides having improved absorbent properties and process for the preparation thereof
US5550189A (en) 1992-04-17 1996-08-27 Kimberly-Clark Corporation 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
EP0614696A4 (en) * 1992-09-25 1995-04-26 Otsuka Pharma Co Ltd Adsorbent for cellular fibronectin, separation and purification of fibronectin, and purification of blood.
US5484896A (en) * 1994-03-24 1996-01-16 The Procter & Gamble Company Esterified high lignin content cellulosic fibers
US6184271B1 (en) * 1994-03-25 2001-02-06 Weyerhaeuser Company Absorbent composite containing polymaleic acid crosslinked cellulosic fibers
US5998511A (en) * 1994-03-25 1999-12-07 Weyerhaeuser Company Polymeric polycarboxylic acid crosslinked cellulosic fibers
SE502706E (en) * 1994-04-05 1999-06-18 Mo Och Domsjoe Ab Preparation of bleached cellulose pulp by bleaching with chlorine dioxide and treatment of complexing agents in the same step
US5725601A (en) * 1994-08-09 1998-03-10 New Oji Paper Co., Ltd. Process for producing water-absorbent cross-linked, carboxyalkylated cellulose-containing material
US5620563A (en) * 1994-10-31 1997-04-15 Pulp Paper Res Inst Process for delignification and bleaching of chemical wood pulps with hydrogen peroxide and a dicyandiamide activator
IT1267497B1 (en) 1994-11-10 1997-02-05 P & G Spa ANIONIC POLYMER, FOR EXAMPLE OF SUPER ABSORBENT TYPE AND RELATED PRODUCTION PROCESS.
AU710648B2 (en) * 1994-12-09 1999-09-23 Procter & Gamble Company, The Absorbent composites and absorbent articles containing the same
US6107538A (en) * 1995-01-10 2000-08-22 The Procter & Gamble Company Absorbent members for absorbing body liquids
US5498705A (en) * 1995-02-22 1996-03-12 Kimberly-Clark Corporation Modified polysaccharides having improved absorbent properties and process for the preparation thereof
US5562740A (en) * 1995-06-15 1996-10-08 The Procter & Gamble Company Process for preparing reduced odor and improved brightness individualized, polycarboxylic acid crosslinked fibers
US5766159A (en) * 1995-07-06 1998-06-16 International Paper Company Personal hygiene articles for absorbing fluids
US5817713A (en) * 1996-01-19 1998-10-06 Fiber-Line, Inc. Water swellable coatings and method of making same
US5668273A (en) * 1996-01-29 1997-09-16 Eastman Chemical Company Carboxyalkyl cellulose esters
US5792856A (en) * 1996-01-29 1998-08-11 Allen; John Michael Process for preparing carboxyalkyl cellulose esters
US6020536A (en) * 1996-06-28 2000-02-01 Sca Hygiene Products Ab Absorbent body for absorbent articles
US6074524A (en) * 1996-10-23 2000-06-13 Weyerhaeuser Company Readily defibered pulp products
US6271278B1 (en) * 1997-05-13 2001-08-07 Purdue Research Foundation Hydrogel composites and superporous hydrogel composites having fast swelling, high mechanical strength, and superabsorbent properties
JP3535958B2 (en) * 1997-09-04 2004-06-07 ユニ・チャーム株式会社 Body fluid absorbent articles
EP1023087A2 (en) * 1997-10-17 2000-08-02 Advanced Medical Solutions Limited Foam materials
DE19746264A1 (en) * 1997-10-20 1999-04-29 Wolff Walsrode Ag Cellulose ether with low salt content
US5981689A (en) * 1997-11-19 1999-11-09 Amcol International Corporation Poly(vinylamine)-based superabsorbent gels and method of manufacturing the same
US6135987A (en) * 1997-12-22 2000-10-24 Kimberly-Clark Worldwide, Inc. Synthetic fiber
US6083211A (en) * 1998-03-13 2000-07-04 The Procter & Gamble Company High suction polymeric foam materials
IT1303738B1 (en) 1998-11-11 2001-02-23 Aquisitio S P A CARBOXYLATE POLYSACCHARIDE CROSS-LINKING PROCESS.
DE69942840D1 (en) * 1998-12-16 2010-11-18 Tno ACID SUPERABSORBANT POLYSACCHARIDE
ID29358A (en) * 1998-12-30 2001-08-23 Kimberly Clark Co KRAFT WOOD FIBER FOR CARBOXSIALCYL SELLULOSA
US20020139496A1 (en) * 1998-12-30 2002-10-03 Sheng-Hsin Hu Kraft wood fibers for carboxymethyl cellulose
US6602994B1 (en) 1999-02-10 2003-08-05 Hercules Incorporated Derivatized microfibrillar polysaccharide
FI114990B (en) * 1999-03-16 2005-02-15 Noviant Oy Modified cellulose products
US6686464B1 (en) * 1999-04-26 2004-02-03 Bki Holding Corporation Cellulose ethers and method of preparing the same
US6531593B1 (en) * 1999-05-21 2003-03-11 Weyerhaeuser Company Method for production of cellulose derivatives and the resulting products
US6107356A (en) * 1999-08-23 2000-08-22 The Procter & Gamble Company High suction polymeric foam materials
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
JP2002256001A (en) * 2001-03-01 2002-09-11 Shin Etsu Chem Co Ltd Cellulose ether and its production method
US6500947B1 (en) * 2001-08-24 2002-12-31 Weyerhaeuser Company Superabsorbent polymer
US20040000012A1 (en) 2002-06-26 2004-01-01 Borregaard Chemcell Treatment of a mixture containing cellulose
US20060142478A1 (en) * 2004-12-29 2006-06-29 Mengkui Luo Carboxyalkyl cellulose polymer network

Also Published As

Publication number Publication date
CA2529199C (en) 2009-12-08
EP1676864A1 (en) 2006-07-05
US7541396B2 (en) 2009-06-02
EP1676864B1 (en) 2017-03-08
KR20060076243A (en) 2006-07-04
US20060137838A1 (en) 2006-06-29
MXPA05013773A (en) 2006-06-28
JP2006188698A (en) 2006-07-20
CN1796654A (en) 2006-07-05

Similar Documents

Publication Publication Date Title
CA2529199A1 (en) Method for making carboxyalkyl cellulose
NZ700627A (en) Method for the preparation of cellulose ethers with a high solids process, product obtained and uses of the product
WO2007014672A3 (en) Hydrogel
EP0815879A3 (en) Bioabsorbable medical devices from oxidized polysaccharides
EP1918306A3 (en) Antimicrobial and Bacteriostatic-Modified Polysaccharides
NO20073251L (en) Feed system for low calorie swelling agents
EP2036581A8 (en) Wound dressings and materials suitable for use therein
WO2015165588A1 (en) Composition comprising cellulose fibres and crosslinking agents, water soluble crosslinked cellulose ethers, and the production thereof
WO2008060377A3 (en) Placental or umbilical cord tissue compositions
van Der Weijde et al. Impact of different lignin fractions on saccharification efficiency in diverse species of the bioenergy crop miscanthus
US20110129880A1 (en) Process for treating biomass to increase accessibility of polysaccarides contained therein to hydrolysis and subsequent fermentation, and polysaccharides with increased accessibility
CN109749095A (en) A kind of chitosan derivatives self-healing hydrogel and its preparation method and application
RU2014153676A (en) CHEMICAL METHOD OF CELLULOSE BOILING
WO2007056066A3 (en) Bioabsorbable hemostatic gauze
TW201319356A (en) Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
AU2003200037A1 (en) Process for producing dried singulated crosslinked cellulose pulp fibers
WO1999016960A1 (en) Cellulose treatment and the resulting product
TW200610769A (en) Process for the production of methylhydroxyalkyl cellulose
Chimphango et al. Isolation, characterization and enzymatic modification of water soluble xylans from Eucalyptus grandis wood and sugarcane bagasse
MXPA02011741A (en) Delayed dissolved cellulose ether and producing process thereof.
JP2002533587A (en) Kraft wood fiber for carboxyalkyl cellulose
JP2019500448A (en) Open-chain modified cellulosic pulp and method for producing and using the same
EP1920787A3 (en) Crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks and methods for its preparation
AU2003212539A1 (en) Therapeutic compositions comprising modified polysaccharides
CN103100107A (en) Method for preparing medical chitin biological dressing

Legal Events

Date Code Title Description
EEER Examination request