A process for the solid phases sulfation of poly (d - glucosamine - co - n - d - acetyl glucosamine) en

摘要

A process for the solid phases sulfation of poly (d - glucosamine - co - n - d - acetyl glucosamine) s, in which, for the pretreatment– to poly (d - glucosamine - co - n - d - acetyl glucosamine) s as solid in the form of films, fibers, textile structures, semifinished products or scaffolds– a polar aprotic or protic solvent or a mixture of at least one polar aprotic or protic solvent and a weakly polar solvent– and / or an aqueous polybasic acid solution– and / or at least one cross-linking agent for the cross-linking of poly (d - glucosamine - co - n - d - acetyl deficiency amines– with retention of the solid phase of the poly (d - glucosamine - co - n - d - acetyl glucosamine) e are added, and– subsequently the solids of the aqueous polybasic acid solution or the cross-linking agent is separated off, and– subsequently to the pretreated poly (d - glucosamine - co - n - d - acetyl glucosamine) s a solvent or solvent mixture and be added at least one sulfatierungsagens.