Title:
新規なセルロースエーテルおよびその使用
Document Type and Number:
Japanese Patent JP2013539815
Kind Code:
A
Abstract:
Cellulose ethers are described herein which are useful in capsules or in coatings for dosage forms. In these cellulose ethers the ether substituents are methyl groups, hydroxyalkyl groups, and optionally alkyl groups being different from methyl, the cellulose ether has an MS (hydroxyalkyl) of 0.05 to 1.00, and hydroxy groups of anhydroglucose units are substituted with methyl groups such that [s23/s26−0.2*MS(hydroxyalkyl)] is 0.35 or less, wherein s23 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 3-positions of the anhydroglucose unit are substituted with methyl groups and wherein s26 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 6-positions of the anhydroglucose unit are substituted with methyl groups.
Inventors:
Laurent Aden
Main Orf Black Hagen
Matthias Kunar
Jin Chao
Main Orf Black Hagen
Matthias Kunar
Jin Chao
Application Number:
JP2013533885A
Publication Date:
October 28, 2013
Filing Date:
October 06, 2011
Export Citation:
Assignee:
Dow Global Technologies LLC
International Classes:
C08B11/08; A61K9/48; A61K47/38
Domestic Patent References:
| JP2003096102A | 2003-04-03 | |||
| JPH04227701A | 1992-08-17 | |||
| JPS484581A | ||||
| JPS49107081A | 1974-10-11 | |||
| JPS5038782A | 1975-04-10 | |||
| JPS5092378A | 1975-07-23 |
Foreign References:
| US6235893B1 | 2001-05-22 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Naori Kota
Toko Saito
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Naori Kota
Toko Saito