Hydrogels

Described are water-insoluble water-swellable hydrogels which have been coated with steric or electrostatic spacers and which have the following pre-coating features: Absorbency Under Load (AUL) (0.7 psi) of at least 20 g/g, Gel strength of at least 1 600 Pa, and preferably the following post-coatin...

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Bibliographic Details
Main Authors HILL JAMES, VOLZ WILLIAM E, RIEGEL ULRICH, HERFERT NORBERT, MAJETTE THOMAS H, FRENZ VOLKER
Format Patent
LanguageEnglish
Published 12.09.2002
Edition7
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
DISINFECTION, STERILISATION, OR DEODORISATION OF AIR
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HUMAN NECESSITIES
HYGIENE
MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES
MEDICAL OR VETERINARY SCIENCE
METALLURGY
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PROSTHESES
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
THEIR PREPARATION OR CHEMICAL WORKING-UP
THEIR RELEVANT APPARATUS
TRANSPORTING
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:Described are water-insoluble water-swellable hydrogels which have been coated with steric or electrostatic spacers and which have the following pre-coating features: Absorbency Under Load (AUL) (0.7 psi) of at least 20 g/g, Gel strength of at least 1 600 Pa, and preferably the following post-coating features: Centrifuge Retention Capacity (CRC) of at least 24 g/g, Saline Flow Conductivity (SFC) of at least 30x10-7 cm3s/g and Free Swell Rate (FSR) of at least 0.15 g/g s and/or vortex Time of not more than 160 s.
Bibliography:Application Number: US20010028907