Preparing dextran fatty acid ester, useful e.g. to coat instruments and materials e.g. implants, medical purposes and embed biomaterials, comprises esterifying the dextran or dextran derivative with a carboxylic acid e.g. lauric acid

Preparation of low melting, biocompatible dextran fatty acid ester, comprises esterifying the dextran or dextran derivative with a carboxylic acid preferably a long chain fatty acid, where the fatty acid for the esterification reaction is activated by the synthesis of iminium chloride and the activa...

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