PETERMANN OLIVER,APPELL ROBERT B,BRACKHAGEN MEINOLF
申请号：
IN8747/DELNP/2015
公开号：
IN2015DN08747A
申请日:
2015.09.23
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
An esterified cellulose ether which comprises (i) aliphatic monovalent acyl groups or (ii) groups of the formula C(O) R COOA wherein R is a divalent aliphatic or aromatic hydrocarbon group and A is hydrogen or a cation or (iii) a combination of aliphatic monovalent acyl groups and groups of the formula C(O) R COOA and which has a) a viscosity of from 1.2 to 1.8 mPaos measured as a 2.0 wt% solution of the esterified cellulose ether in 0.43 wt% aqueous NaOH at 20 °C or b) a viscosity of up to 5 mPa•s measured as a 10 wt% solution of the esterified cellulose ether in acetone at 20 °C or c) a combination of the viscosities of a) and b) is useful for preparing solid dispersions comprising drugs.
