Abstract: This invention discloses chemically modified polyaminosaccharides, in particular chemically modified chitosans, in the molecular structure of which a predetermined proportion of the amino functional groups is sulfonated by the hydrocarbyl sultone compound via a covalent bond. Such chemically modified polyaminosaccharides may be produced by a process of sulfonating an un-modified polyaminosaccharide having amino functional groups by a hydrocarbyl sultone compound in the presence of an organic solvent under a suitable temperature. Chemically modified chitosans of this invention may be used in a variety of applications, including wound healing.

Abstract: This invention discloses chemically modified polyaminosaccharides, in particular chemically modified chitosans, in the molecular structure of which a predetermined proportion of the amino functional groups is sulfonated by the hydrocarbyl sultone compound via a covalent bond. Such chemically modified polyaminosaccharides may be produced by a process of sulfonating an un-modified polyaminosaccharide having amino functional groups by a hydrocarbyl sultone compound in the presence of an organic solvent under a suitable temperature. Chemically modified chitosans of this invention may be used in a variety of applications, including wound healing.

Abstract: Alkylsulfonated polyaminosaccharides, such as alkylsulfonated chitosan, having a sultone substituent covalently bonded to the amino group and a known size and degree of substitution may be produced by methods of the invention. Such methods may include heating of the polyaminosaccharide in a polar solvent, such as alcohol, ether, or alcoholether to reflux, then adding an alkyl sultone. Alkylsulfonated polyaminosaccharides of the present invention may be used in a wide variety of applications. Alkylsulfonated chitosan is particularly useful in wound healing.