Block copolymers and preparation thereof
    1.
    发明授权
    Block copolymers and preparation thereof 有权
    嵌段共聚物及其制备方法

    公开(公告)号:US06300452B1

    公开(公告)日:2001-10-09

    申请号:US09442403

    申请日:1999-11-18

    IPC分类号: C08G7746

    摘要: The invention relates to a new polysiloxane-based block copolymer having a formula T(AB)xAT  (I) wherein A=—(SiR′R″O)nSiR′R″—, wherein R′ and R″ are the the same or different and represent a lower alkyl group or a phenyl group, wherein said alkyl or phenyl group may be substituted or unsubstituted; B is polyalkylene oxide of formula wherein R is hydrogen, lower alkyl, or phenyl; R1 is hydrogen or lower alkyl; y is 2-6; m is 1-30; n is 1-3000; and x is 0-100.

    摘要翻译: 本发明涉及一种新的聚硅氧烷基嵌段共聚物,其具有式(A) - (SiR'R''O)nSiR'R“ - ,其中R'和R”相同或不同,表示低级烷基 或苯基,其中所述烷基或苯基可以是取代的或未取代的; B是式(Ⅳ)的聚环氧烷,R是氢,低级烷基或苯基; R 1是氢或低级烷基; y为2-6; m为1-30; n为1-3000; x为0-100。

    Membrane or matrix for controlling the permeation rate of drugs
    2.
    发明授权
    Membrane or matrix for controlling the permeation rate of drugs 有权
    用于控制药物渗透速率的膜或基质

    公开(公告)号:US06794464B2

    公开(公告)日:2004-09-21

    申请号:US10298195

    申请日:2002-11-18

    IPC分类号: C08L8310

    摘要: A membrane or matrix for controlling the permeation rate of a drug, where the membrane or matrix includes a siloxane-based elastomer composition which contains at least one elastomer and optionally a non-crosslinked polymer. The elastomer composition includes poly(alkylene oxide) groups, and the poly(alkylene oxide) groups are present as blocks in a chain of the elastomer or the polymer, or as blocks and alkoxy-terminated grafts of polysiloxane units, the blocks or blocks and grafts being linked to the polysiloxane units by silicon-carbon bonds, with at least three blocks being present in the elastomer or polymer chain. Methods for the preparation of the elastomer composition are also disclosed.

    摘要翻译: 用于控制药物渗透速率的膜或基质,其中膜或基质包括含有至少一种弹性体和任选的非交联聚合物的硅氧烷基弹性体组合物。 弹性体组合物包括聚(环氧烷)基团,聚(环氧烷)基团作为嵌段存在于弹性体或聚合物的链中,或作为聚硅氧烷单元的嵌段和烷氧基封端的接枝物,嵌段或嵌段 接枝物通过硅 - 碳键与聚硅氧烷单元连接,至少有三个嵌段存在于弹性体或聚合物链中。 还公开了制备弹性体组合物的方法。

    Drug delivery device, especially for the delivery of gestodene
    5.
    发明授权
    Drug delivery device, especially for the delivery of gestodene 有权
    药物输送装置,特别是用于递送吉司他丁

    公开(公告)号:US06299894B1

    公开(公告)日:2001-10-09

    申请号:US09568027

    申请日:2000-05-10

    IPC分类号: A61F1300

    CPC分类号: A61K9/0039

    摘要: The invention relates to a delivery device for the controlled release of the therapeutically active agent gestodene, over a prolonged period of time, at a release rate of 0,1-300 &mgr;g/day, said device comprising a core comprising at least said therapeutically active agent, and a membrane encasing said core wherein said membrane is made of an elastomer. According to the invention, the elastomer is a siloxane-based elastomer comprising 3,3,3-trifluoropropyl groups attached to the Si-atoms of the siloxane units, and the release rate of said therapeutically active agent of said delivery device is regulated by the amount of said 3,3,3-trifluoropropyl groups.

    摘要翻译: 本发明涉及一种递送装置,用于在更长的时间内以0.01至300杯/天的释放速率控制释放治疗活性剂甘露聚糖,所述装置包含至少包含所述治疗活性物质的核心 试剂和包封所述芯的膜,其中所述膜由弹性体制成。 根据本发明,弹性体是包含连接到硅氧烷单元的Si原子上的3,3,3-三氟丙基的硅氧烷基弹性体,并且所述递送装置的所述治疗活性剂的释放速率由 所述3,3,3-三氟丙基的量。

    Chromatographic purification of cyclosporing using a high pressure
carbon dioxide eluent
    7.
    发明授权
    Chromatographic purification of cyclosporing using a high pressure carbon dioxide eluent 失效
    使用高压二氧化碳洗脱液对环孢菌素进行色谱纯化

    公开(公告)号:US5976381A

    公开(公告)日:1999-11-02

    申请号:US894957

    申请日:1997-11-12

    CPC分类号: C07K7/645

    摘要: A process is provided for the preparation of pure cyclosporin which is purified chromatographically from a mixture of different cyclosporin forms and other substances prepared by fermentation. The process comprises feeding a mixture containing a desired form of cyclosporin with an eluent consisting of high pressure carbon dioxide and an adjuvant, into a chromatography column being packed with particles prepared of silica, and recovering from the eluent flow coming out of the chromatography column a fraction which contains the desired cyclosporin form in adequately pure form.

    摘要翻译: PCT No.PCT / FI96 / 00120 Sec。 371日期1997年11月12日 102(e)日期1997年11月12日PCT 1996年3月1日PCT公布。 公开号WO96 / 27607 日期1996年9月12日提供用于制备纯环孢菌素的方法,其由不同环孢菌素形式和通过发酵制备的其它物质的混合物进行色谱纯化。 该方法包括将含有所需形式的环孢菌素的混合物与由高压二氧化碳和佐剂组成的洗脱液加入到填充有由二氧化硅制备的颗粒的色谱柱中,并从色谱柱出来的洗脱液流中回收 含有所需环孢菌素形式的足够纯度的级分。

    Process for the preparation of methylenebisphosphonic acids
    8.
    发明授权
    Process for the preparation of methylenebisphosphonic acids 失效
    制备亚甲基双膦酸的方法

    公开(公告)号:US5237094A

    公开(公告)日:1993-08-17

    申请号:US838422

    申请日:1992-04-30

    IPC分类号: C07F9/38

    CPC分类号: C07F9/3839

    摘要: The present invention concerns a novel process for the preparation of methylenebisphosphonic acids of the formula I ##STR1## wherein Q.sup.1 and Q.sup.2 are independently hydrogen or halogen, by hydrolyzing the corresponding methylenebisphosphonic acid tetraester of the formula ##STR2## wherein R has the meaning of a straight or branched alkyl group containing 1 to 4 carbon atoms, and Q.sup.1 and Q.sup.2 have the same meaning as above.

    摘要翻译: PCT No.PCT / FI90 / 00197 Sec。 一九九二年四月三十日 102(e)日期1992年4月30日PCT提交1990年8月15日PCT公布。 公开号WO91 / 03480 1991年3月21日。本发明涉及一种制备式I(I)的亚甲基双膦酸的新方法,其中Q1和Q2独立地为氢或卤素,通过水解相应的式(I)的亚甲基双膦酸四酯 (II)其中R具有含有1至4个碳原子的直链或支链烷基,Q1和Q2具有与上述相同的含义。