DERIVATIZED MICROFIBRILLAR POLYSACCHARIDE

PROBLEM TO BE SOLVED: To provide a derivatized microfibrillar cellulose derivatized to comprise substituents that provide electrostatic and/or steric functionality.SOLUTION: This invention relates to the derivatized microfibrillar cellulose derivatized to comprise the substituents that provide the e...

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Bibliographische Detailangaben
Hauptverfasser:	THOMPSON SAMUEL ANTHONY, GELMAN ROBERT ALAN, TISE FRANK PEINE, CONNER HERBERT THOMPSON, LUSVARDI KATE MARRITT, COWAN PATRICK JOSEPH, CASH MARY JEAN, CHAN ANITA N
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AGRICULTURE ANIMAL HUSBANDRY BANDAGES, DRESSINGS OR ABSORBENT PADS BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DYES FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FISHING FOMENTATION FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J FORESTRY HUMAN NECESSITIES HUNTING HYGIENE IMPREGNATING OR COATING OF PAPER MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEDICAL OR VETERINARY SCIENCE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PAINTS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS POLISHES POLYSACCHARIDES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PRODUCTION OF CELLULOSE PROSTHESES PULP COMPOSITIONS SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TRAPPING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a derivatized microfibrillar cellulose derivatized to comprise substituents that provide electrostatic and/or steric functionality.SOLUTION: This invention relates to the derivatized microfibrillar cellulose derivatized to comprise the substituents that provide the electrostatic and/or steric functionality, wherein: a group that provides the electrostatic functionality comprises anionic charge; and the derivatized microfibrillar cellulose is derived from (1) purified, optionally bleached wood pulps produced from sulfite, kraft, or prehydrolyzed kraft pulping processes, and (2) purified cotton linters. The degree of substitution is between about 0.02 and about 0.5. The derivatized microfibrillar polysaccharide is characterized by forming a gel in water at least at one point in the concentration range of from 0.05 to 0.99 wt.% based on the total weight of the gel.