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WO1997030092A3 - Hydrogels - Google Patents

Hydrogels Download PDF

Info

Publication number
WO1997030092A3
WO1997030092A3 PCT/GB1997/000420 GB9700420W WO9730092A3 WO 1997030092 A3 WO1997030092 A3 WO 1997030092A3 GB 9700420 W GB9700420 W GB 9700420W WO 9730092 A3 WO9730092 A3 WO 9730092A3
Authority
WO
WIPO (PCT)
Prior art keywords
hydrogels
galactomannan
chitosan
residues
derivatives
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.)
Ceased
Application number
PCT/GB1997/000420
Other languages
French (fr)
Other versions
WO1997030092A2 (en
Inventor
Denis Keith Gilding
Kadem Gayad Al-Lamee
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.)
Innovative Technologies Ltd
Innovative Technology Ltd
Original Assignee
Innovative Technologies Ltd
Innovative Technology Ltd
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 Innovative Technologies Ltd, Innovative Technology Ltd filed Critical Innovative Technologies Ltd
Priority to AU18025/97A priority Critical patent/AU1802597A/en
Publication of WO1997030092A2 publication Critical patent/WO1997030092A2/en
Publication of WO1997030092A3 publication Critical patent/WO1997030092A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
    • C08B37/0087—Glucomannans or galactomannans; Tara or tara gum, i.e. D-mannose and D-galactose units, e.g. from Cesalpinia spinosa; Tamarind gum, i.e. D-galactose, D-glucose and D-xylose units, e.g. from Tamarindus indica; Gum Arabic, i.e. L-arabinose, L-rhamnose, D-galactose and D-glucuronic acid units, e.g. from Acacia Senegal or Acacia Seyal; Derivatives thereof
    • 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
    • A61L15/225—Mixtures of macromolecular compounds
    • 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
    • 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
    • A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
    • A61L26/0009—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form containing macromolecular materials
    • A61L26/0052—Mixtures of macromolecular compounds
    • 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
    • A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
    • A61L26/0061—Use of materials characterised by their function or physical properties
    • A61L26/008—Hydrogels or hydrocolloids
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • Molecular Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Biochemistry (AREA)
  • Emergency Medicine (AREA)
  • Medicinal Preparation (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Cosmetics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A hydrogel comprises a cross-linked form of at least one water soluble polysaccharide selected from (i) polysaccharides comprised of galactomannan residues, or (ii) chitosan or derivatives thereof.
PCT/GB1997/000420 1996-02-15 1997-02-14 Hydrogels Ceased WO1997030092A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18025/97A AU1802597A (en) 1996-02-15 1997-02-14 Hydrogels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9603146.3A GB9603146D0 (en) 1996-02-15 1996-02-15 Hydrogels
GB9603146.3 1996-02-15

Publications (2)

Publication Number Publication Date
WO1997030092A2 WO1997030092A2 (en) 1997-08-21
WO1997030092A3 true WO1997030092A3 (en) 1997-11-20

Family

ID=10788772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/000420 Ceased WO1997030092A2 (en) 1996-02-15 1997-02-14 Hydrogels

Country Status (3)

Country Link
AU (1) AU1802597A (en)
GB (1) GB9603146D0 (en)
WO (1) WO1997030092A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1762381B (en) 1997-07-29 2012-07-11 爱尔康实验室公司 Ophthalmic compositions containing galactomannan polymers and borate
EP0970175B1 (en) 1997-07-29 2002-10-02 Alcon Laboratories, Inc. Conditioning solutions for hard contact lens care
EP0999854B1 (en) 1997-07-29 2003-10-01 Alcon Manufacturing Ltd. Switchable viscoelastic systems containing galactomannan polymers and borate
KR20000011247A (en) * 1998-07-23 2000-02-25 김윤 Composition and pharmaceutical dosage form for colonic drug delivery using polysaccharides
AU7645100A (en) 1999-10-07 2001-05-10 Coloplast A/S Wound care device
US8101196B2 (en) 2001-06-26 2012-01-24 Biointeractions, Ltd. Polysaccharide biomaterials and methods of use thereof
CN105392902B (en) 2014-06-24 2021-10-29 生物辐射实验室股份有限公司 digital PCR barcode
EP4636096A2 (en) 2016-01-12 2025-10-22 Bio-Rad Laboratories, Inc. Synthesizing barcoding sequences utilizing phase-shift blocks and uses thereof
CN108883031B (en) 2016-03-24 2022-01-25 生物辐射实验室股份有限公司 Use of gel beads to control droplet dispersion
CN118441026A (en) 2016-12-19 2024-08-06 生物辐射实验室股份有限公司 Drop-on labeled DNA with maintained adjacency
CN110621347A (en) * 2017-05-12 2019-12-27 康宁股份有限公司 Cross-linked shear-thinning fluids with tunable rheology for 3D bioprinting and drug delivery
WO2018236918A1 (en) 2017-06-20 2018-12-27 Bio-Rad Laboratories, Inc. MDA USING A BALL OLIGONUCLEOTIDE
EP3704247B1 (en) 2017-11-02 2023-01-04 Bio-Rad Laboratories, Inc. Transposase-based genomic analysis
WO2019152395A1 (en) 2018-01-31 2019-08-08 Bio-Rad Laboratories, Inc. Methods and compositions for deconvoluting partition barcodes
CN113166807B (en) 2018-08-20 2024-06-04 生物辐射实验室股份有限公司 Nucleotide sequence generation by co-localization of barcode beads in partitions
CN109867729B (en) * 2019-03-05 2020-12-01 北京林业大学 Light-responsive galactomannan hydrogel and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067214A (en) * 1979-12-17 1981-07-22 Colgate Palmolive Co Borated polysaccharide or polyvinyl alcohol and absorbent products
WO1992003172A1 (en) * 1990-08-17 1992-03-05 Sebapharma Gmbh & Co. Dressing system
US5420197A (en) * 1994-01-13 1995-05-30 Hydromer, Inc. Gels formed by the interaction of polyvinylpyrrolidone with chitosan derivatives
US5578661A (en) * 1994-03-31 1996-11-26 Nepera, Inc. Gel forming system for use as wound dressings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067214A (en) * 1979-12-17 1981-07-22 Colgate Palmolive Co Borated polysaccharide or polyvinyl alcohol and absorbent products
WO1992003172A1 (en) * 1990-08-17 1992-03-05 Sebapharma Gmbh & Co. Dressing system
US5420197A (en) * 1994-01-13 1995-05-30 Hydromer, Inc. Gels formed by the interaction of polyvinylpyrrolidone with chitosan derivatives
US5578661A (en) * 1994-03-31 1996-11-26 Nepera, Inc. Gel forming system for use as wound dressings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GEORGE A.F. ROBERTS ET AL.: "The formation of gels by reaction of chitosan with glutaraldehyde.", MAKROMOLEKULARE CHEMIE, MACROMOLECULAR CHEMISTRY AND PHYSICS, vol. 190, no. 5, 1 May 1989 (1989-05-01), BASEL CH, pages 951 - 960, XP000132505 *

Also Published As

Publication number Publication date
GB9603146D0 (en) 1996-04-17
WO1997030092A2 (en) 1997-08-21
AU1802597A (en) 1997-09-02

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