CROSSLINKED, CARBOXYALKYLATED AND DEACETYLATED DERIVATIVE OF CHITIN, PROCESS FOR PREPARATION THEREOF, AND USE THEREOF AS AN ADSORBENT MATERIAL

摘要

Chitin, a widely occurring natural material, is converted into a polymeric substance of amphoteric nature and useful as an adsorbent material, in for example, the separation of sugars and proteins or of mixtures of proteins, by successive cross-linking, carboxyalkylation and deacetylation reactions. The resulting cross-linked polymeric substance has a degree of cross-linking of 0.01 to 0.3, a degree of carboxyalkylating substitution of 0.1 to 0.9, and a degree of deacetylation of 0.1 to 1.