发明名称 |
PARTIALLY CROSS-LINKED ESTERIFIED CELLULOSE ETHERS |
摘要 |
<p>A partially cross-linked esterified cellulose ether having A) groups of the formula -C(O) - R - COOA or a combination of aliphatic monovalent acyl groups and 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, and B) having a molecular weight distribution such that [Wf(>100k) - Wf(>100k)XL] / Wf(>100k)XL is at least 0.20, wherein Wf(>100k) is the total weight fraction of the esterified cellulose ether that exceeds 100,000 g/mol, and Wf(>100k)XL is the weight fraction that exceeds 100,000 g/mol of the methylated esterified cellulose ether is useful as enteric polymer for pharmaceutical dosage forms.</p> |
申请公布号 |
WO2014031418(A1) |
申请公布日期 |
2014.02.27 |
申请号 |
WO2013US55037 |
申请日期 |
2013.08.15 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
BRACKHAGEN, MEINOLF;GRASMAN, NICHOLAS, S.;LI, YONGFU;MEUNIER, DAVID, M.;PETERMANN, OLIVER;SPREHE, MATTHIAS |
分类号 |
C08B11/20;A61K9/28;C08B13/00 |
主分类号 |
C08B11/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|