PROCESS FOR PREPARING POLYSACCHARIDE SULFATES, AND POLYSACCHARIDE SULFATE

PROCESS FOR PREPARING POLYSACCHARIDE SULFATES, AND POLYSACCHARIDE SULFATE

The present invention relates to a process for preparing polysaccharide sulfates. In the process, a mixture comprising at least one polysaccharide and at least one polar aprotic solvent is provided. The at least one polysaccharide is reacted to form at least one polysaccharide acetate sulfate, where...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: HETTRICH, Kay
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:The present invention relates to a process for preparing polysaccharide sulfates. In the process, a mixture comprising at least one polysaccharide and at least one polar aprotic solvent is provided. The at least one polysaccharide is reacted to form at least one polysaccharide acetate sulfate, wherein at least one sulphating agent, at least one acetylation agent and at least one peroxodisulfate are added to the mixture, the mixture being subsequently subjected to a temperature treatment. The at least one polysaccharide acetate sulfate is separated from the mixture and is reacted to form at least one polysaccharide sulfate. The present invention also relates to a polysaccharide sulfate that can be prepared with the process according to the invention. The present invention further relates to a microcapsule and to a process for preparing a microcapsule.