| 摘要 |
An aqueous composition comprising at least 10 weight percent of a dispersed esterified cellulose ether, based on the total weight of the aqueous composition, wherein the esterified cellulose ether comprises (i) groups of the formula -C(O) - R - COOH or (ii) a combination of aliphatic monovalent acyl groups and groups of the formula -C(O) - R - COOH, R being a divalent aliphatic or aromatic hydrocarbon group, and at least a part of the groups -C(O) - R - COOH are neutralized with an ammonium salt of carbonic acid, formic acid or acetic acid, and wherein d90 of the dispersed esterified cellulose ether particles is up to 10 micrometers, d90 being the diameter where 90 mass percent of the particles have a smaller equivalent diameter and the other 10 mass percent have a larger equivalent diameter, is useful for preparing coating dosage forms including tablets, capsules and others, or for the formation of capsules shells. |
