A novel ultra high molecular weight esterified cellulose ether

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专利权人:

ダウ グローバル テクノロジーズ エルエルシー

发明人:

オリヴァー・ピーターマン,マインオルフ・ブラックハーゲン,マティアス・スプレヘ

申请号：

JP2015561433

公开号：

JP6334574B2

申请日:

2014.02.28

申请国别(地区):

JP

年份:

2018

代理人:

摘要：

Esterified cellulose ethers which comprise (i) groups of the formula —C(O)—R—COOA or (ii) 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, which have a viscosity of up 50 mPa·s, measured as a 10 wt % solution of the esterified cellulose ether in acetone at 20° C., and a weight average molecular weight Mw of at least 220,000 Dalton, or which have a viscosity of up 100 mPa·s, measured as a 10 wt % solution of the esterified cellulose ether in acetone at 20° C., and a weight average molecular weight Mw of at least 310,000 Dalton are useful for preparing solid dispersions comprising drugs.

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