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1. WO2007140573 - NANOSILVER COATED BACTERIAL CELLULOSE

Publication Number WO/2007/140573
Publication Date 13.12.2007
International Application No. PCT/CA2007/000682
International Filing Date 24.04.2007
IPC
C08J 7/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
7Chemical treatment or coating of shaped articles made of macromolecular substances
04Coating
06with compositions not containing macromolecular substances
A61L 15/46 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
15Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
42Use of materials characterised by their function or physical properties
46Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
C08B 1/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
1Preparatory treatment of cellulose for making derivatives thereof
C08B 15/05 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
15Preparation of other cellulose derivatives or modified cellulose
05Derivatives containing elements other than carbon, hydrogen, oxygen, halogen, or sulfur
C12P 19/04 2006.01
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
19Preparation of compounds containing saccharide radicals
04Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
CPC
A61L 15/28
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
15Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
22containing macromolecular materials
28Polysaccharides or their derivatives
A61L 15/46
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
15Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
42Use of materials characterised by their function or physical properties
46Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
A61L 2300/104
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
2300Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
10containing or releasing inorganic materials
102Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
104Silver, e.g. silver sulfadiazine
A61L 2300/404
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
2300Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
40characterised by a specific therapeutic activity or mode of action
404Biocides, antimicrobial agents, antiseptic agents
A61L 2300/606
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
2300Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
60characterised by a special physical form
606Coatings
A61L 2300/624
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
2300Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
60characterised by a special physical form
62Encapsulated active agents, e.g. emulsified droplets
624Nanocapsules
Applicants
  • AXCELON BIOPOLYMERS CORPORATION [CA]/[CA] (AllExceptUS)
  • WAN, Wankei [CA]/[CA]
  • GUHADOS, Ganesh [IN]/[CA] (UsOnly)
Inventors
  • WAN, Wankei
  • GUHADOS, Ganesh
Agents
  • HILL & SCHUMACHER
Priority Data
60/794,13624.04.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NANOSILVER COATED BACTERIAL CELLULOSE
(FR) CELLULOSE BACTÉRIENNE ENROBÉE DE NANOARGENT
Abstract
(EN)
Nanosilver coated bacterial cellulose nanofiber and a method of producing the nanosilver coated bacterial cellulose nanofiber. The nanosilver coated bacterial cellulose nanofiber is produced by preparing a suspension of bacterial cellulose fibers, oxidizing bacterial cellulose fibers; adding the thio- group to the polymer backbone; reacting the resulting product with silver proteinate and enhancing the nanosilver particle size. The nanosilver coated bacterial cellulose nanofibers exhibit antimicrobial properties.
(FR)
La présente invention concerne des nanofibres de cellulose bactérienne enrobées de nanoargent et un procédé de production de la nanofibre de cellulose bactérienne enrobée de nanoargent. La nanofibre de cellulose bactérienne enrobée de nanoargent est produite par préparation d'une suspension de fibres de cellulose bactérienne, oxydation des fibres de cellulose bactérienne, ajout du groupe thio au squelette de polymère, réaction du produit résultant avec du protéinate d'argent et augmentation de la taille des particules de nanoargent. Les nanofibres de cellulose bactérienne enrobées de nanoargent présentent des propriétés antimicrobiennes.
Also published as
Latest bibliographic data on file with the International Bureau