Process for preparing porous bioresorbable material having interconnected pores
    2.
    发明公开
    Process for preparing porous bioresorbable material having interconnected pores 有权
    用于制备多孔生物可吸收材料与互连孔

    公开(公告)号:EP1325755A1

    公开(公告)日:2003-07-09

    申请号:EP02017927.1

    申请日:2002-08-09

    CPC classification number: A61L27/56 A61L27/18 C08L67/04

    Abstract: The present invention provides a process for preparing a porous bioresorbable material having interconnected pores. A bioresorbable polymer and a low molecular weight oligomer are dissolved in an organic solvent to form a bioresorbable polymer solution. The bioresorbable polymer has a molecular weight greater than 20,000 and the oligomer has a molecular weight of 200 to 4000. The bioresorbable polymer solution is then contacted with a coagulant to form a porous bioresorbable material.

    Abstract translation: 本发明提供了用于制备具有互连孔的多孔生物可吸收材料的方法。 生物可再吸收的聚合物和低分子量的低聚物溶解在有机溶剂中以形成生物可吸收聚合物溶液。 生物可吸收聚合物具有大于20,000的分子量,并且所述低聚物具有200至4000。可生物再吸收的聚合物溶液的分子量,然后用凝结剂以形成多孔生物可吸收材料接触。

    Biodegradable copolymer, and polymeric micelle composition containing the same
    5.
    发明公开
    Biodegradable copolymer, and polymeric micelle composition containing the same 有权
    可生物降解的共聚物,以及这些共聚物含有聚合物胶束组合物

    公开(公告)号:EP1550680A1

    公开(公告)日:2005-07-06

    申请号:EP03029295.7

    申请日:2003-12-22

    Abstract: A biodegradable copolymer with a core block comprising bioresorbable hydrophobic polyester segment and from 3 to 10 shell blocks comprising hydrophilic polyethylene glycol segment. The hydrophobic polyester segment and each of the hydrophilic polyethylene glycol segments are linked by a urethane linkage. A polymeric micelle composition containing the copolymer is also provided. The copolymer forms micelles when the concentration of the copolymer in a dispersing medium reaches or exceeds the critical micelle concentration. The micelles possess good drug and bioactive agent delivery characteristics and are suitable for use in drug delivery or cosmetic applications.

    Abstract translation: 一种可生物降解的共聚物与核心块,包括生物可吸收的疏水性聚酯链段和3到10个壳块包括亲水性聚乙二醇链段。 疏水性聚酯链段和各所述亲水性聚乙二醇链段的由氨基甲酸乙酯键连接。 因此,提供含有该共聚物的聚合物胶束组合物。 当共聚物的在分散介质中的浓度达到或超过临界胶束浓度的共聚物形成胶束。 胶束具有良好的药物和生物活性剂的递送特性和适合用于药物递送或化妆品应用中使用。

    Aliphatic polyester polymer compositions and preparation method thereof
    7.
    发明公开
    Aliphatic polyester polymer compositions and preparation method thereof 有权
    Aliphatische Polyester-Polymer-Zusammensetzungen und Herstellungsverfahrendafür

    公开(公告)号:EP2014695A1

    公开(公告)日:2009-01-14

    申请号:EP07012320.3

    申请日:2007-06-23

    CPC classification number: C08G63/912 A61L27/18 C08L67/04

    Abstract: An aliphatic polyester polymer compositions and preparation method thereof. The invention provides a bioresorbable aliphatic polyester copolymer, comprising the reaction product of a first polyester, a second polyester, and a coupling agent. Specifically, the first polyester and second polyester have the same repeat units, but different weight average molecular weights. Methods for preparing the aliphatic polyester copolymer are provided, in which the first polyester reacts with the second polyester in the presence of the coupling agent, undergoing copolymerization.

    Abstract translation: 一种脂族聚酯聚合物组合物及其制备方法。 本发明提供了生物可再吸收的脂族聚酯共聚物,其包含第一聚酯,第二聚酯和偶联剂的反应产物。 具体地说,第一聚酯和第二聚酯具有相同的重复单元,但是重均分子量不同。 提供了制备脂族聚酯共聚物的方法,其中第一聚酯在偶联剂存在下与第二聚酯反应进行共聚。

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