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    Method of making porous biodegradable polymers
    32.
    发明申请
    Method of making porous biodegradable polymers 失效
    制造多孔生物可降解聚合物的方法

    公开(公告)号：US20030064156A1

    公开(公告)日：2003-04-03

    申请号：US09947182

    申请日：2001-09-04

    Applicant: Industrial Technology Research Institute

    Inventor： Hsi-Hsin Shih ,  Kuang-Rong Lee ,  Huey-Min Lai ,  Chin-Chin Tsai ,  Yuan-Chia Chang

    IPC: B05D003/10

    CPC classification number: C08J9/122 ,  A61L27/56 ,  A61L27/58 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2203/08 ,  C08J2389/00 ,  Y02P20/544

    Abstract: A method of making a porous biodegradable polymer is disclosed, which comprises (a) placing a biodegradable polymer and a solvent in a chamber; (b) adding a supercritical fluid to the chamber and maintaining the chamber at a predetermined temperature for a sufficient period of time to allow the supercritical fluid to dissolve into the biodegradable polymer with the help of the solvent; and (c) venting the supercritical fluid and the solvent by reducing the pressure in the chamber, thereby obtaining a porous biodegradable polymer.

    Abstract translation: 公开了制备多孔生物可降解聚合物的方法，其包括（a）将可生物降解的聚合物和溶剂置于室中; （b）将超临界流体加入到室中并将室维持在预定温度足够的时间以允许超临界流体借助溶剂溶解到可生物降解的聚合物中; 和（c）通过降低室中的压力来排出超临界流体和溶剂，从而获得多孔生物可降解聚合物。

    Process for producing foamed resin article
    33.
    发明申请
    Process for producing foamed resin article 失效
    生产泡沫树脂制品的方法

    公开(公告)号：US20030027878A1

    公开(公告)日：2003-02-06

    申请号：US10094801

    申请日：2002-03-12

    Applicant: Sumitomo Chemical Company, Ltd.

    Inventor： Mitsunori Nodono ,  Ryuma Kuroda

    IPC: C08J009/00

    CPC classification number: C08J9/12 ,  B29C44/348 ,  C08J2201/032 ,  C08J2323/12

    Abstract: The present invention provides a process for producing a foamed resin article, the process comprising: a step (the first step) of impregnating any one crystalline thermoplastic resin or resin composition containing, as an elementary ingredient, a crystalline thermoplastic resin selected from a certain group, under an elevated pressure which is not lower than the critical pressure of a substance with which the selected crystalline thermoplastic resin or resin composition is to be impregnated, with a fluid of the substance, and a step (the second step) of releasing the resin or resin composition impregnated with the substance from the foregoing pressurized condition in a period of less than 10 seconds.

    Abstract translation: 本发明提供一种发泡树脂制品的制造方法，其特征在于，包括以下步骤（第一工序）：浸渍任意一种结晶性热塑性树脂或树脂组合物，所述结晶性热塑性树脂或树脂组合物含有选自以下组成的结晶性热塑性树脂作为基本成分 在不低于要浸渍所选择的结晶热塑性树脂或树脂组合物的物质的临界压力的升高的压力下与物质的流体一起，以及释放树脂的步骤（第二步骤） 或者在小于10秒的时间内从上述加压条件浸渍了物质的树脂组合物。

    Microcellular polymer foams and method for their production
    34.
    发明授权
    Microcellular polymer foams and method for their production 有权
    微孔聚合物泡沫及其生产方法

    公开(公告)号：US06232354B1

    公开(公告)日：2001-05-15

    申请号：US09236179

    申请日：1999-01-25

    Applicant: Seng C. Tan

    Inventor： Seng C. Tan

    IPC: C08J918

    CPC classification number: B29C44/3453 ,  B29C44/3446 ,  B29C44/348 ,  C08J9/18 ,  C08J2201/032

    Abstract: An environmentally friendly, commercially practicable process for the production of microcellular polymer foams from amorphous, semi-crystalline and crystalline polymers that comprises consolidating the polymer into a polymer shape, saturating the polymer shape with an inert gas at elevated temperature, above the Tg of the polymer, and under elevated pressure, releasing the pressure and cooling, i.e. quenching, the saturated polymer polymer shape under controlled temperature and pressure conditions to produce either a closed or open celled, low to medium density microcellular foam or a closed cell, high density microcellular foam.

    Abstract translation: 用于从无定形，半结晶和结晶聚合物生产微孔聚合物泡沫的环境友好的商业上可行的方法，其包括将聚合物固结成聚合物形状，在惰性气体的高温高于Tg的情况下使聚合物形状饱和 聚合物，并且在升高的压力下，在受控的温度和压力条件下释放压力和冷却，即骤冷饱和聚合物聚合物形状，以产生封闭或开孔，低至中密度微孔泡沫或闭孔，高密度微孔 泡沫。

    Semi-continuous production of solid state polymeric foams
    36.
    发明授权
    Semi-continuous production of solid state polymeric foams 失效
    半连续生产固态聚合物泡沫

    公开(公告)号：US5684055A

    公开(公告)日：1997-11-04

    申请号：US354960

    申请日：1994-12-13

    Applicant: Vipin Kumar ,  Henry G. Schirmer

    Inventor： Vipin Kumar ,  Henry G. Schirmer

    IPC: B29C44/34 ,  C08J9/00

    CPC classification number: B29C44/3453 ,  B29C44/3446 ,  B29C44/348 ,  C08J9/122 ,  C08J9/34 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2205/044 ,  C08J2205/052 ,  C08J2325/06 ,  C08J2327/06 ,  C08J2333/12 ,  C08J2355/02 ,  C08J2367/02 ,  C08J2369/00 ,  Y10S264/13 ,  Y10S264/83

    Abstract: The present invention provides a method for the semi-continuous production of microcellular foam articles. In a preferred embodiment, a roll of polymer sheet is provided with a gas channelling means interleaved between the layers of polymer. The roll is exposed to a non-reacting gas at elevated pressure for a period of time sufficient to achieve a desired concentration of gas within the polymer. The saturated polymer sheet is then separated from the gas channelling means and bubble nucleation and growth is initiated by heating the polymer sheet. After foaming, bubble nucleation and growth is quenched by cooling the foamed polymer sheet.

    Abstract translation: 本发明提供了一种半连续生产微孔泡沫制品的方法。 在一个优选实施例中，一卷聚合物片材设置有交错在聚合物层之间的气体通道装置。 将辊在升高的压力下暴露于非反应性气体一段足以在聚合物内达到所需浓度的气体的时间。 然后将饱和聚合物片材与气体引导装置分离，并且气泡成核，并通过加热聚合物片材开始生长。 发泡后，通过冷却发泡聚合物片来淬灭气泡成核和生长。

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