Title:
粒度分布が調節されたヒドロキシプロピルメチルセルロースアセテートサクシネート（ＨＰＭＣＡＳ）粒子の製造方法、及びＨＰＭＣＡＳ粉末
Document Type and Number:
Japanese Patent JP6542767
Kind Code:
B2
Abstract:
Disclosed are a method for preparing hydroxypropyl methylcellulose acetate succinate (HPMCAS) grains and HPMCAS grains. The disclosed method for preparing HPMCAS grains comprises: a step of esterifying hydroxypropyl methylcellulose (HPMC), acetic anhydride, and succinic anhydride in a reaction medium in the presence of a catalyst so as to obtain a reaction solution containing HPMCAS (esterification step); and a step of continuously or intermittently putting the reaction solution into water so as to form grains (granulating step).
Inventors:
Sun Fan Bang
Ju Hee Shin
Jin Lul Song
Kyun Yeol Park
John Hee Chun
The Song Jung
San Job Lee
Ju Hee Shin
Jin Lul Song
Kyun Yeol Park
John Hee Chun
The Song Jung
San Job Lee
Application Number:
JP2016526073A
Publication Date:
July 10, 2019
Filing Date:
December 15, 2014
Export Citation:
Assignee:
LOTTE Fine Chemical Co.,Ltd.
International Classes:
C08B13/00
Domestic Patent References:
| JP2008501009A | ||||
| JP2013532151A | ||||
| JP4293901A |
Foreign References:
| WO2013148154A1 | ||||
| WO2013154607A1 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Tatsuhiko Abe
Choi
Tatsuhiko Abe
Choi