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    Perforated foams
    1.
    发明授权
    Perforated foams 有权
    穿孔泡沫

    公开(公告)号：US06720362B1

    公开(公告)日：2004-04-13

    申请号：US09762161

    申请日：2001-03-12

    申请人： Chung P. Park

    发明人： Chung P. Park

    IPC分类号： C08J900

    CPC分类号： C08J9/38 ,  B29C44/5663 ,  Y10S521/918

    摘要： Thermoplastic polymer foams having sound deadening properties satisfactory for demanding applications are provided which have mechanical strength, which are economical to manufacture, and which are hydrolytically stable. Methods of preparing these foams are also provided. The foams are useful in sound management, cushion packaging, filtering, and fluid absorption and exhibit one or more of the following properties: 1) average cell size greater than about 2 mm; 2) substantially open-cell structure and 3) relatively large pores connecting the cells. In order that the foam be acoustically active, the foam should possess a substiantially open-cell structure and a relatively low airflow resistivity. Foams with substantially open-cell structure and relatively low airflow resistivity are prepared by mechanically opening a foam having an average cell size greater than about 2 mm. In most cases, such mechanical opening creates relatively large pores connecting the cells.

    摘要翻译： 提供具有令人满意的要求苛刻应用的声音抑制性能的热塑性聚合物泡沫体，其机械强度是制造经济且水解稳定的。 还提供了制备这些泡沫体的方法。 泡沫在声音管理，缓冲包装，过滤和流体吸收中是有用的，并且具有以下一个或多个性质：1）平均泡孔尺寸大于约2mm; 2）基本上开孔结构和3）连接细胞的较大孔。 为了使泡沫具有声学活性，泡沫体应该具有基本开放孔结构和相对较低的气流阻力。 通过机械打开具有大于约2mm的平均泡孔尺寸的泡沫来制备具有基本开孔结构和相对较低气流阻力的泡沫。 在大多数情况下，这种机械开口产生连接细胞的相对较大的孔。

    Method for production of porous cross-linked polymer
    2.
    发明授权
    Method for production of porous cross-linked polymer 有权
    生产多孔交联聚合物的方法

    公开(公告)号：US06362243B1

    公开(公告)日：2002-03-26

    申请号：US09658171

    申请日：2000-09-08

    申请人： Masazumi Sasabe ,  Katsuhiko Sakamoto ,  Hiroshi Yamazaki ,  Koichi Yonemura ,  Kenji Kadonaga ,  Akiko Mitsuhashi ,  Kazutomo Takahashi ,  Kozo Nogi ,  Kenji Minami

    发明人： Masazumi Sasabe ,  Katsuhiko Sakamoto ,  Hiroshi Yamazaki ,  Koichi Yonemura ,  Kenji Kadonaga ,  Akiko Mitsuhashi ,  Kazutomo Takahashi ,  Kozo Nogi ,  Kenji Minami

    IPC分类号： C08J928

    CPC分类号： C08J9/28 ,  C08F2/32 ,  C08J2201/028 ,  C08J2333/06 ,  Y10S521/918

    摘要： This invention has for an object thereof the provision of a method for the production of a porous cross-linked polymer which can freely control the upper and lower surface behavior of the porous cross-linked polymer, the width and the thickness of the polymer and can perform continuously a process ranting from a step of supplying the emulsion through a step of polymerizing it. The object of this invention, in the production of a porous cross-linked polymer by polymerizing a water-in-oil type high internal phase emulsion, is accomplished by a method for the production of a porous cross-linked polymer characterized by performing continuously a process ranting from a step of supplying the emulsion through a step of polymerizing it while having the outer surface part of the emulsion retain an atmosphere or a state having a lower oxygen content than the ambient air.

    摘要翻译： 本发明的目的在于提供一种生产多孔交联聚合物的方法，其可以自由地控制多孔交联聚合物的上下表面行为，聚合物的宽度和厚度以及可以 不断进行从乳液供给步骤到通过聚合步骤的工序。本发明的目的是通过聚合油包水型高内相乳液来生产多孔交联聚合物是 通过生产多孔交联聚合物的方法实现，其特征在于连续进行从供给乳液的步骤的过程，该步骤通过使乳液的外表面部分保持气氛或具有 比环境空气低的氧含量。

    Process for the preparation of polymer-based sustained release compositions
    5.
    发明授权
    Process for the preparation of polymer-based sustained release compositions 失效
    制备基于聚合物的持续释放组合物的方法

    公开(公告)号：US06296842B1

    公开(公告)日：2001-10-02

    申请号：US09638165

    申请日：2000-08-10

    申请人： Warren E. Jaworowicz ,  James I. Wright

    发明人： Warren E. Jaworowicz ,  James I. Wright

    IPC分类号： C08J936

    CPC分类号： A61K9/1647 ,  A61K9/1694 ,  Y10S521/918

    摘要： The invention relates to a sustained release composition and methods of forming and using said composition for the sustained release of biologically active agent. The sustained release compositions of the invention comprise a biocompatible polymer and a biologically active agent characterized by a porous center and a less porous outer layer wherein the center and outer layer consist of essentially the same materials. The sustained release compositions can be prepared by annealing at least a substantial portion of the exterior surface of a polymer/active agent matrix. The compositions which have been annealed exhibit a decrease in the release of agent over the first 24 hours following administration (i.e., reduced burst) and as a result can show an increase in the duration of sustained release thereby providing increased therapeutic benefits.

    摘要翻译： 本发明涉及缓释组合物和形成和使用所述组合物以持续释放生物活性剂的方法。 本发明的持续释放组合物包含生物相容性聚合物和生物活性剂，其特征在于多孔中心和较少多孔外层，其中中心层和外层由基本上相同的材料组成。 持续释放组合物可以通过使至少大部分的聚合物/活性剂基质的外表面退火来制备。 已经退火的组合物在给药后的前24小时表现出试剂释放的降低（即，减少的爆发），结果可以显示持续释放的持续时间的增加，从而提供增加的治疗益处。

    Microcellular carbon foam and method
    10.
    发明授权
    Microcellular carbon foam and method 失效
    微孔碳泡沫和方法

    公开(公告)号：US5300272A

    公开(公告)日：1994-04-05

    申请号：US120705

    申请日：1993-09-13

    申请人： Ronald F. Simandl ,  John D. Brown

    发明人： Ronald F. Simandl ,  John D. Brown

    IPC分类号： C04B38/00 ,  C08J9/28 ,  H01G9/00 ,  H01G9/155 ,  H01M4/58 ,  C01B31/00 ,  C01B31/02 ,  C08J9/36

    CPC分类号： H01G9/155 ,  C04B38/0022 ,  C08J9/28 ,  H01M4/587 ,  C08J2333/20 ,  Y02E60/13 ,  Y10S521/918

    摘要： A microcellular carbon foam characterized by a density in the range of about 30 to 1000 mg/cm.sup.3, substantially uniform distribution of cell sizes of diameters less than 100 .mu.m with a majority of the cells being of a diameter of less than about 10 .mu.m, well interconnected strut morphology providing open porosity, and an expanded d(002) X-ray turbostatic spacing greater than 3.50 angstroms. The precursor for the carbon foam is prepared by the phase inversion of polyacrylonitrile in a solution consisting essentially of at least one alkali metal halide and a phase inversion solvent for the polyacrylonitrile.

    摘要翻译： 一种微孔碳泡沫，其特征在于密度在约30至1000mg / cm 3的范围内，直径小于100（μm）的单元尺寸的分布基本均匀，其中大部分单元的直径小于约10 （我的）m，良好相互联系的支柱形态，提供开放的孔隙度，以及大于3.50埃的扩展的d（002）X射线涡旋静力间距。 通过在基本上由至少一种碱金属卤化物和用于聚丙烯腈的相转移溶剂组成的溶液中的相转变来制备碳泡沫的前体。