SUBSTANTIALLY UNCROSSLINKED CARBOXYMETHYL STARCH, PROCESS FOR THE PREPARATION THEREOF, USE AS A RETARDING AGENT AND A RETARDING DRUG

摘要

The invention relates to a substantially uncrosslinked carboxymethyl starch and a process for the preparation of said substantially uncrosslinked carboxymethyl starch by etherification of native, uncrosslinked starches with monochloracetic acid in the presence of alcoholic swelling inhibitors and under alkaline conditions. The substantially uncrosslinked carboxymethyl starch is suitable as an auxiliary agent for retarding in drugs.