ZHAI DAYU,GAN YONG,SCHMITT ROBERT L,ZHU CHUNLIU,CHAN ALAN KA CHUN
申请号：
IN8979/CHENP/2011
公开号：
IN2011CN08979A
申请日:
2011.12.02
申请国别(地区):
IN
年份:
2013
代理人:
摘要：
An osmotic dosage form which comprising: (a) a core comprising a biologically active ingredient (b) a semi-permeable membrane covering said core and (c) at least one passageway through the semi-permeable membrane, wherein the semipermeable membrane comprises ethyl cellulose, an acrylic or methacrylic polymer and a water-soluble plasticizer with the proviso that the semi-permeable membrane comprises no or not more than 15 weight percent of a water-soluble material excluding any water-soluble plasticizer, based on the total dry weight of the semi-permeable membrane.
