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    Porous PEEK article as an implant
    2.
    发明公开
    Porous PEEK article as an implant 有权
    PoröserPEEK-Gegenstand als ein Implantat

    公开(公告)号：EP2338532A3

    公开(公告)日：2013-03-20

    申请号：EP10382243.3

    申请日：2010-09-10

    Applicant: Fundacion Inasmet

    Inventor： Olalde Graells, Beatriz ,  Jurado Oñate, María, Jesús

    IPC: A61L27/18 ,  A61L27/56 ,  C08J9/26 ,  C08J9/28

    CPC classification number: A61L27/18 ,  A61L27/56 ,  C08J9/26 ,  C08J9/28 ,  C08J2201/0422 ,  C08J2201/0444 ,  C08J2201/0446 ,  C08J2201/052 ,  C08J2205/05 ,  C08J2207/10 ,  C08J2371/12 ,  Y10T428/249953 ,  Y10T428/249986 ,  C08L71/00

    Abstract: The present invention refers to a porous PEEK-type polymer article comprising a porous PEEK-type polymer structure and presenting at least a trimodal pore distribution. The invention describes a process for the production of said porous PEEK-type polymer article comprising: a) contacting a PEEK-type polymer with a composition comprising at least a organic solvent, b) heating at a temperature at which the PEEK-type polymer is dissolved, c) adding at least a porogen agent, d) cooling the mixture obtained in c) at a temperature at least equal or lower than the temperature at which the PEEK-type polymer precipitates, e) forming said cooled mixture into a shaped article, f) removing the organic solvent and the porogen agent, and g) recovering the PEEK-type polymer article.

    Abstract translation: 本发明涉及一种多孔PEEK型聚合物制品，其包含多孔PEEK型聚合物结构并呈现至少三峰孔分布。 本发明描述了一种生产所述多孔PEEK型聚合物制品的方法，包括：a）使PEEK型聚合物与至少包含有机溶剂的组合物接触，b）在PEEK型聚合物为 溶解，c）至少加入致孔剂，d）在至少等于或低于PEEK型聚合物沉淀的温度的温度下冷却在c）中获得的混合物，e）将所述冷却的混合物形成成型制品 ，f）除去有机溶剂和致孔剂，g）回收PEEK型聚合物制品。

    Process for recovering a solid microporous polyester polymer from a recycle stream and products made thereby
    7.
    发明公开
    Process for recovering a solid microporous polyester polymer from a recycle stream and products made thereby 失效
    过程为固体微孔聚酯的从再循环物流中回收及其产品

    公开(公告)号：EP0850982A2

    公开(公告)日：1998-07-01

    申请号：EP97203993.7

    申请日：1997-12-18

    Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.

    Inventor： Brownscombe, Thomas Fairchild ,  June, Raymond Lawrence ,  Semple, Thomas Carl ,  Tomaskovic, Robert Stephen

    IPC: C08J11/08 ,  C08J9/28 ,  C08G63/89 ,  C08G63/80

    CPC classification number: C08J11/08 ,  C08G63/80 ,  C08G63/89 ,  C08J9/28 ,  C08J2201/052 ,  C08J2367/02 ,  Y02W30/701

    Abstract: Process for recovering polyester polymer as a microporous solid from a mixed polymer recycle stream which comprises:-

    a) contacting the mixed polymer recycle stream at elevated temperature with a selective solvent in which polyester polymers are soluble and other polymers present in the recycle stream are substantially insoluble to form a solution of polyester polymer in the selective solvent;
    b) if the concentration of polyester in said solution is below 35 wt.%, increasing it to above that value;
    c) cooling the selective solvent solution to form a solid material having an interconnected phase of solid polymer domains rich in polyester polymer and a phase of solvent domains rich in selective solvent;
    d) extracting the selective solvent from the solid material to form a microporous solid.

    There is also provided an article comprising a molded, extruded, or cut, solid polyethylene terephthalate polymer having an open microporous structure, the average pore diameter being within the range of 0.5 to 50 microns.

    Abstract translation: 用于从它包括混合聚合物再循环料流中回收聚酯聚合物作为微多孔固体的过程： - a）在其中聚酯聚合物的选择性溶剂接触，在升高的温度下混合聚合物再循环料流中存在的再循环料流中的可溶性和其它聚合物基本上 不溶性，以形成在选择性溶剂中聚酯聚合物的溶液; b）如在所述溶液中的聚酯的浓度低于35重量％，它增加上述那样的值。 c）冷却选择性溶剂溶液，以形成具有在富含聚酯聚合物和丰富的选择性溶剂溶剂结构域组成的相的固体聚合物结构域的相互连接的相的固体材料; d）从所述固体材料提取所述选择性溶剂，以形成微孔性固体。因此，提供了在制品，其包括模塑，挤出，或切割，具有开放微孔结构的固体聚对苯二甲酸乙酯聚合物，平均孔径为的范围内 0.5至50微米。

    EXTRUSION OF HOLLOW FIBRE MEMBRANES
    10.
    发明公开
    EXTRUSION OF HOLLOW FIBRE MEMBRANES 失效
    中空纤维膜的挤出

    公开(公告)号：EP0423249A4

    公开(公告)日：1991-05-22

    申请号：EP89912619

    申请日：1989-11-10

    Applicant: MEMTEC LIMITED

    Inventor： KOPP, CLINTON, VIRGIL ,  STREETON, ROBERT, JOHN, WILLIAM ,  KHOO, PAUL, SOO-HOCK

    IPC: B01D67/00 ,  B01D69/08 ,  B01D71/26 ,  B29C47/00 ,  C08J9/28 ,  D01D5/24 ,  D01F2/28 ,  D01F6/00 ,  D01F6/06 ,  B01D13/04 ,  B29C47/20

    CPC classification number: D01D5/24 ,  B01D67/0009 ,  B01D67/003 ,  B01D69/08 ,  B01D69/085 ,  B01D71/26 ,  B01D2325/02 ,  C08J9/28 ,  C08J2201/052

    Abstract: A process for making a polymeric, porous hollow fibre (21) by heating a mixture of a thermoplastic polymer and a solvent to a temperature and for a time for the polymer and solvent to mutually dissolve, then introducing the molten mixture into an extrusion head adapted to shape the hollow fibre. The shaped fibre is then cooled in the extrusion head to a temperature so that non-equilibrium liquid-liquid phase separation takes place to form a bi-continuous matrix of the polymer and solvent in which the polymer and solvent form two intermingled separate phases of large interfacial surface area. Finally, the solvent is removed from the polymer. The extrusion head for forming the above-mentioned polymeric, porous hollow fibre has an elongated body (17, 18) defining an axial passageway (11) for receiving a lumen-forming fluid (14) and a first annular passage (12) therearound for receiving the molten mixture (15) from which the hollow fibre (21) is formed. A second annular passageway (13) is radially outward of the first annular passageway (12) and receives a coating fluid (16). A third annular passageway (19) receives a cooling fluid and has means (20) for directing the cooling fluid towards the outer surface of the coating fluid (16). The porous polymeric material of the fibre produced by the above-mentioned process has a lacey or filamentous structure consisting of a plurality of polymer strands connected together at spaced apart locations along each strand.

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