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    FLÜSSIGES KOHLENDIOXID ENTHALTENDE TREIBMITTEL
    51.
    发明授权
    FLÜSSIGES KOHLENDIOXID ENTHALTENDE TREIBMITTEL 失效
    液态二氧化碳含推进剂

    公开(公告)号：EP0766713B2

    公开(公告)日：2003-10-22

    申请号：EP95936529.7

    申请日：1995-10-20

    申请人： Solvay Fluor und Derivate GmbH

    发明人： KRÜCKE, Werner

    IPC分类号： C08J9/12 ,  C09K3/30

    CPC分类号： C08J9/122 ,  C08J9/127 ,  C08J2203/12 ,  C08J2203/14 ,  C08J2203/142 ,  Y10S521/91 ,  Y10S521/917

    摘要： The invention concerns a process for preparing foamed plastics, wherein a liquid foaming agent composition containing carbon dioxide liquefied under pressure is used. In addition to the carbon dioxide liquefied under pressure, all conventional liquid physical foaming agents such as alcohols, aliphatic or cyclical hydrocarbons, halogenous hydrocarbons or halogenous ethers can be used. The process is suitable in particular for preparing foamed polyethylene, polystyrene or polyurethane plastics. Foaming agent compositions containing carbon dioxide liquefied under pressure are also suitable for producing single or multi-component polyurethane foamed materials. In addition to the carbon dioxide liquefied under pressure all conventional liquid physical foaming agents such as ethers, ketones, aliphatic or cyclical hydrocarbons, halogenous hydrocarbons or halogenous ethers can be used. The invention further concerns a process for preparing these foaming agent compositions.

    VERFAHREN ZUR HERSTELLUNG EINES AUFGESCHÄUMTEN GRANULATES UND DURCH DIESES VERFAHREN HERSTELLBARES AUFGESCHÄUMTES GRANULAT
    52.
    发明授权
    VERFAHREN ZUR HERSTELLUNG EINES AUFGESCHÄUMTEN GRANULATES UND DURCH DIESES VERFAHREN HERSTELLBARES AUFGESCHÄUMTES GRANULAT 有权
    用于生产的泡沫颗粒物并通过这个过程可生产扩大颗粒

    公开(公告)号：EP0968077B1

    公开(公告)日：2002-03-06

    申请号：EP98966774.6

    申请日：1998-12-15

    申请人： Gefinex Polymerschäume GmbH

    发明人： BRUNING, Jürgen ,  DESEKE, Otto ,  MEYKE, Joachim

    IPC分类号： B29C44/34 ,  B29B9/16

    CPC分类号： B29B9/065 ,  B29B7/88 ,  B29B9/12 ,  B29B9/16 ,  B29C44/3461 ,  B29K2105/048 ,  Y10S521/917

    摘要： Disclosed is a method for producing a foamed granulate, wherein a thermoplastic synthetic material is placed in an extruder, the synthetic material is melted, a pressurized expanding agent is fed through one or several injection nozzles, the molten material enriched with the expanding medium is foamed as it exits through a perforated plate arranged at the outlet of the extruder and is granulated by a cutting device arranged behind the perforated plate. Also disclosed is a device for implementing the method and the foamed granulate. The invention is characterized in that the molten material is cooled in a controlled manner as it comes out of the perforated plate and exits directly into a flowing cooling medium, in that the temperature of the molten material and the temperature and pressure of the cooling medium are regulated in such a way that once the molten material exits the perforated plate, the surface of the molten material is directly hardened into a closed film with a smooth surface having a thickness that ranges from 10 to 500 νm, preferably 20 to 200 νm, whereupon the molten material is foamed and a granulate with a rounded surface and a bulk density of 10 to 600 g/l is formed. A semi-spherical granulate with a smooth surface is thus obtained.

    GESCHÄUMTE PORÖSE MEMBRANEN AUS THERMOPLASTISCHEN POLYMEREN SOWIE VERFAHREN UND VORRICHTUNG ZU IHRER HERSTELLUNG
    53.
    发明公开
    GESCHÄUMTE PORÖSE MEMBRANEN AUS THERMOPLASTISCHEN POLYMEREN SOWIE VERFAHREN UND VORRICHTUNG ZU IHRER HERSTELLUNG 有权
    发泡多孔膜的热塑性聚合物的方法和器具，用于产生

    公开(公告)号：EP1051236A1

    公开(公告)日：2000-11-15

    申请号：EP99932415.5

    申请日：1999-01-19

    申请人： SARTORIUS AG

    发明人： Klötzer, Rebecca

    IPC分类号： B01D67/00 ,  B01D71/50 ,  B29C44/34

    CPC分类号： C08L1/08 ,  B01D39/1692 ,  B01D67/002 ,  B01D69/02 ,  B01D69/10 ,  B01D2323/08 ,  B01D2323/10 ,  B01D2325/026 ,  B29C44/3442 ,  B29C47/822 ,  Y10S521/91 ,  Y10S521/917

    摘要： The invention relates to expanded porous thermoplastic polymer membranes which are characterised by a proportion of at least 80 % open cells and a pore volume of at least 75 %. The invention also relates to a method and a device for producing said membranes. The membranes can be used for microfiltration and macrofiltration of fluids in industry, laboratories and protection of the environment. According to the inventive method, a polymer melt is conveyed through an extruder under pressure, whereby it is loaded in an injection stage with cell builders with different diffusion rates in comparison with said polymer melt, and it is pressed through a die to form a membrane. In an additional mixing step which occurs upstream from the die, the temperature of the single-phase melt is reduced to a temperature which is lower than the original processing temperature and/or the pressure thereof is increased. The cell builders enable the polymer melt to be expanded when it is passed through the die to form a predominantly open cell structure.

    VERFAHREN ZUR HERSTELLUNG EINES AUFGESCHÄUMTEN GRANULATES
    55.
    发明公开
    VERFAHREN ZUR HERSTELLUNG EINES AUFGESCHÄUMTEN GRANULATES 有权
    用于生产泡沫颗粒

    公开(公告)号：EP0968077A1

    公开(公告)日：2000-01-05

    申请号：EP98966774.6

    申请日：1998-12-15

    申请人： Gefinex Polymerschäume GmbH

    发明人： BRUNING, Jürgen ,  DESEKE, Otto ,  MEYKE, Joachim

    IPC分类号： B29C44/34 ,  B29B9/16

    CPC分类号： B29B9/065 ,  B29B7/88 ,  B29B9/12 ,  B29B9/16 ,  B29C44/3461 ,  B29K2105/048 ,  Y10S521/917

    摘要： Disclosed is a method for producing a foamed granulate, wherein a thermoplastic synthetic material is placed in an extruder, the synthetic material is melted, a pressurized expanding agent is fed through one or several injection nozzles, the molten material enriched with the expanding medium is foamed as it exits through a perforated plate arranged at the outlet of the extruder and is granulated by a cutting device arranged behind the perforated plate. Also disclosed is a device for implementing the method and the foamed granulate. The invention is characterized in that the molten material is cooled in a controlled manner as it comes out of the perforated plate and exits directly into a flowing cooling medium, in that the temperature of the molten material and the temperature and pressure of the cooling medium are regulated in such a way that once the molten material exits the perforated plate, the surface of the molten material is directly hardened into a closed film with a smooth surface having a thickness that ranges from 10 to 500 νm, preferably 20 to 200 νm, whereupon the molten material is foamed and a granulate with a rounded surface and a bulk density of 10 to 600 g/l is formed. A semi-spherical granulate with a smooth surface is thus obtained.

    Method for producing polyurethane foam and apparatus therefor
    58.
    发明公开
    Method for producing polyurethane foam and apparatus therefor 失效
    一种制备聚氨酯泡沫和装置及其实现过程。

    公开(公告)号：EP0378243A2

    公开(公告)日：1990-07-18

    申请号：EP90100672.6

    申请日：1990-01-13

    申请人： SEALED AIR CORPORATION

    发明人： Wheeler, Robert Don ,  Schulman, Edward Henry ,  Wierzbicki, Ronald John ,  Bertram, George Teofilius

    IPC分类号： B29B7/74 ,  B29C67/22

    CPC分类号： B29C44/3446 ,  B29B7/7447 ,  Y10S261/26 ,  Y10S521/917

    摘要： A method of producing a polyurethane foam comprising the steps of dissolving rapidly and substantially completely a non-condensible non-reactive gas in a liquid isocyanate component or a liquid polyol component or both while the isocyanate and polyol components are maintained separate from one another, while controlling the flow of the non-reactive gas to maintain a predetermined dissolved gas to liquid ratio, and while maintaining the component in which the nucleating agent is being dissolved under pressure sufficient to maintain the gas in solution and to hold substantially constant the dissolved gas to liquid ratio and mixing the previously separated isocyanate and polyol components together while reducing the pressure to nucleate the dissolved gas in the isocyanate and polyol components and while impinging liquid streams of the composition together thereby enhancing mixing and permitting the mixture to foam so as to form a fine celled polyurethane foam. An apparatus for producing the same is also provided.

    摘要翻译： 制造聚氨酯泡沫，其包含迅速和基本溶解在液体异氰酸酯组分或液体多元醇组分或这两种完全呼叫不可冷凝的非反应性气体，同时将异氰酸酯和多元醇组分保持彼此分开的步骤的一种方法，而 控制以维持对液体的比例，并同时保持在其中成核剂被压力足以保持气体在溶液中并以基本恒定的溶解的气体保持到下溶解的分量相关的预定溶解气体的非反应性气体的流量 液体比和以前分离的异氰酸酯和多元醇组分混合在一起，同时降低成核的溶解气体中的异氰酸酯和多元醇组分的压力和同时照射该组合物的液体流一起从而增强混合和允许所述混合物发泡，从而形成一个 微细孔聚氨酯泡沫。 因此其制造的装置被提供。

    Method of manufacturing polyurethane foam
    59.
    发明公开
    Method of manufacturing polyurethane foam 失效
    Verfahren zum Verfertigen eines Polyurethanschaumes。

    公开(公告)号：EP0351852A2

    公开(公告)日：1990-01-24

    申请号：EP89113349.8

    申请日：1989-07-20

    申请人： HUMAN INDUSTRY CORPORATION

    发明人： Kumasaka, Sadao ,  Tada, Satomi ,  Katsuki, Koretoshi ,  Fujii, Osamu ,  Kuga, Shigeo

    IPC分类号： B29B7/00

    CPC分类号： B29B7/7433 ,  B29B7/7428 ,  Y10S521/914 ,  Y10S521/917

    摘要： A method of manufacturing polyurethane foams comprising the steps of mixing a polyol and an organic isocyanate without casuing them to substantially react each other thereby to obtain a nonreacted mixture, mixing the nonreacted mixture with a foaming agent, a catalyst, a foam stabilizer and other necessary addi­tires such as a pigment, a fire retardant and a filler, and injecting the resultant mixture to foam and crosslink. The polylol and the organic isocyanate may be preliminarily mixed with a gas such as an inert gas or air. The nonreacted mixture containing the polyol and organic isocyanate may be subjected to again at a temperature of -10to 25°C for 12 to 27 hours.

    摘要翻译： 一种制造聚氨酯泡沫体的方法，包括以下步骤：将多元醇和有机异氰酸酯混合而不使其彼此基本反应，从而获得未反应的混合物，将未反应的混合物与发泡剂，催化剂，泡沫稳定剂和其它必需的混合物 添加剂如颜料，阻燃剂和填料，并将所得混合物注入泡沫和交联。 多元醇和有机异氰酸酯可以预先与气体如惰性气体或空气混合。 含有多元醇和有机异氰酸酯的未反应混合物可以在-10至25℃的温度下再次进行12至27小时。