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9 条记录 (耗时 0.024 秒)

    Process for the preparation of polymeric absorbents
    1.
    发明授权
    Process for the preparation of polymeric absorbents 失效
    制备聚合物吸收剂的方法

    公开(公告)号：US06794467B2

    公开(公告)日：2004-09-21

    申请号：US09537450

    申请日：2000-03-27

    申请人： Ashish Kishor Lele ,  Shyni Varghese ,  Manohar Virupax Badiger ,  Raghunath Anant Mashelkar

    发明人： Ashish Kishor Lele ,  Shyni Varghese ,  Manohar Virupax Badiger ,  Raghunath Anant Mashelkar

    IPC分类号： C08F472

    CPC分类号： C08F6/001

    摘要： The invention discloses a process for the preparation of polymeric absorbents useful for gelling organic liquids. The process comprises mixing one or more monomers with a cross-linking agent, a free radical initiator, an optional solvent, optionally in the presence of a transition metal source and subjecting the mixture so obtained to a conventional polymerisation method. The polymer is removed, crushed to obtain polymer powder, washed with solvent and dried by conventional methods to remove unreacted monomers, followed by swelling in alcohols to obtain the desired product.

    摘要翻译： 本发明公开了一种制备可用于胶凝有机液体的聚合物吸收剂的方法。 该方法包括将一种或多种单体与交联剂，自由基引发剂，任选的溶剂混合，任选在过渡金属源存在下，并将所得混合物用常规聚合方法进行混合。 将聚合物除去，粉碎以获得聚合物粉末，用溶剂洗涤并通过常规方法干燥以除去未反应的单体，然后在醇中溶胀以获得所需产物。

    Polymer composition for controlled release of active ingredients in response to pH, and a process of preparing the same
    8.
    发明授权
    Polymer composition for controlled release of active ingredients in response to pH, and a process of preparing the same 失效
    用于响应于pH控制释放活性成分的聚合物组合物及其制备方法

    公开(公告)号：US5851546A

    公开(公告)日：1998-12-22

    申请号：US615431

    申请日：1996-03-14

    申请人： Raghunath Anant Mashelkar ,  Mohan Gopalkrishna Kulkarni ,  Rohini Nitin Karmalkar

    发明人： Raghunath Anant Mashelkar ,  Mohan Gopalkrishna Kulkarni ,  Rohini Nitin Karmalkar

    IPC分类号： A01N25/10 ,  A61K47/48 ,  A61F2/00 ,  A61K9/52

    CPC分类号： A61K47/48176 ,  A01N25/10

    摘要： The present invention provides a polymer for the controlled release of a pendent chain linked active ingredient, and a process for the preparation of such a polymer for the controlled release of an active ingredient in response to pH. The process involves selecting a vinyl monomer to which the active ingredient molecule is covalently linked through a pendent group, and selecting monomers bearing catalytic groups. The active ingredient-bearing monomer and the catalytic group-containing monomer are brought in juxtaposition either by complexation or molecular imprinting, and then polymerized with a hydrophilic monomer and crosslinker under an inert atmosphere with a suitable polymerization initiator.

    摘要翻译： 本发明提供了用于控制释放悬链链的活性成分的聚合物，以及用于制备用于响应于pH控制释放活性成分的这种聚合物的方法。 该方法包括选择活性成分分子通过侧基共价连接的乙烯基单体，并选择带有催化基团的单体。 含活性成分的单体和含催化基团的单体通过络合或分子印迹并置，然后在惰性气氛下用合适的聚合引发剂与亲水性单体和交联剂聚合。