Oliver Petermann,Meinolf Brackhagen,Matthias Sprehe,Robert B. Appell
申请号:
US16038327
公开号:
US20180319898A1
申请日:
2018.07.18
申请国别(地区):
US
年份:
2018
代理人:
摘要:
Esterified cellulose ethers which comprise (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,which have a viscosity of up 19 mPa·s, measured as a 10 wt % solution of the esterified cellulose ether in acetone at 20° C. andwhich have a weight average molecular weight Mw of at least 90,000 Dalton,are useful for preparing solid dispersions comprising drugs.