Title:
乳酸重合体及びその製造方法
Document Type and Number:
Japanese Patent JP5046447
Kind Code:
B2
Abstract:
A pharmaceutical preparation, e.g. a sustained-release microcapsule preparation, comprising a lactic acid polymer of 15,000 to 50,000 in weight-average molecular weight, the content of polymeric materials having not more than about 5,000 in weight-average molecular weight therein being not more than about 5% by weight. The sustained-released microcapsule preparation encapsulating a physiologically active substance can fully prevent the initial excessive release of the physiologically active substance from the microcapsules and keep a stable release rate over a long period of time.
Inventors:
Kohei Yamamoto
Valley force
Takashi Aoki
Yoshio Hata
Valley force
Takashi Aoki
Yoshio Hata
Application Number:
JP2001237210A
Publication Date:
October 10, 2012
Filing Date:
August 06, 2001
Export Citation:
Assignee:
Wako Pure Chemical Industries, Ltd.
Takeda GmbH
Takeda GmbH
International Classes:
A61K9/52; C08G63/88; A61K9/16; A61K9/50; C08G63/08; C08G63/89; C08G63/91; C08L101/16
Domestic Patent References:
| JP10182496A | ||||
| JP62054760A | ||||
| JP11035670A | ||||
| JP9012690A | ||||
| JP10218977A |
Other References:
化学大辞典1,日本,1963年 7月 1日,縮刷版,第639頁
Attorney, Agent or Firm:
Aoyama Aoi
Takuji Yamada
Mitsuo Tanaka
Michiko Matsutani
Yasushi Ochiai
Takuji Yamada
Mitsuo Tanaka
Michiko Matsutani
Yasushi Ochiai