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 semi-permeable 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.
申请公布号
WO2010139111(A1)
申请公布日期
2010.12.09
申请号
WO2009CN72099
申请日期
2009.06.02
申请人
DOW GLOBAL TECHNOLOGIES INC.;ZHAI, DAYU;GAN, YONG;SCHMITT, ROBERT, L.;ZHU, CHUNLIU;CHAN, ALAN, KA CHUN
发明人
ZHAI, DAYU;GAN, YONG;SCHMITT, ROBERT, L.;ZHU, CHUNLIU;CHAN, ALAN, KA CHUN