Cellulose derivatives

Stable microdispersed polyanhydroglucuronic acid and salts thereof contain in their polymeric chain from 8 to 30 percent by weight of carboxyl groups, at least 80 percent by weight of these groups being of the uronic type, at most 5 percent by weight of carbonyl groups including intra- and inter-mol...

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Bibliographic Details
Main Authors SANTAR IVAN, BRIESTENSKY JIRI, KISS FRANTISEK
Format Patent
LanguageEnglish
Published 15.02.2007
Subjects
CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
DISINFECTION, STERILISATION, OR DEODORISATION OF AIR
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
POLYSACCHARIDES
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Stable microdispersed polyanhydroglucuronic acid and salts thereof contain in their polymeric chain from 8 to 30 percent by weight of carboxyl groups, at least 80 percent by weight of these groups being of the uronic type, at most 5 percent by weight of carbonyl groups including intra- and inter-molecular 2,6 and 3,6 hemiacetals, 2,4-hemialdals and C2 and C3 aldehydes. The molecular mass of the polymeric chain is from 1x103 to 3x105 Daltons. The microdispersed products are prepared by subjecting a polyanhydroglucuronic acid-containing material to partial or complete hydrolysis and neutralization in an oxidative environment.
Bibliography:Application Number: US20060361006