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    Method for producing expanded granulate
    1.
    发明授权
    Method for producing expanded granulate 有权

    公开(公告)号：US10279516B2

    公开(公告)日：2019-05-07

    申请号：US14897746

    申请日：2014-06-11

    申请人： BASF SE

    发明人： Christian Däschlein ,  Peter Gutmann ,  Frank Prissok ,  Uwe Keppeler ,  Jürgen Ahlers

    IPC分类号： B29C44/34 ,  B29B9/06 ,  C08J9/16 ,  B29B9/12 ,  B29C44/04 ,  C08J9/00 ,  C08J9/12 ,  C08J9/34 ,  B29B7/88 ,  B29B7/90 ,  B29B9/14 ,  B29C47/00 ,  B29C47/86 ,  B29K21/00 ,  B29K77/00 ,  B29K105/00 ,  B29K105/16

    摘要： A process for producing expanded pellets from a thermoplastic elastomer having an elongation at break of more than 100% measured to DIN EN ISO 527-2, comprising: (a) pressing a polymer melt comprising a blowing agent through a perforated disk (18) controlled to a temperature between 150° C. and 280° C. and into a pelletizing chamber (26), (b) using a cutting device (20) to comminute the polymer melt pressed through the perforated disk (18) into individual expanding pellets, (c) discharging the pellets from the pelletizing chamber (26) using a liquid stream (36), wherein the blowing agent comprises CO2 and/or N2 and the amount of blowing agent in the polymer melt is from 0.5 to 2.5 wt %, the pelletizing chamber (26) is traversed by a stream of liquid at a temperature between 5° C. and 90° C. and the pressure of 0.1 bar to 20 bar above ambient pressure such that the pellets are expanded in the pressurized liquid by the blowing agent, producing expanded pellets having an uninterrupted skin.

    METHOD FOR PRODUCING EXPANDED GRANULES
    2.
    发明申请
    METHOD FOR PRODUCING EXPANDED GRANULES 有权
    生产膨化颗粒的方法

    公开(公告)号：US20150174808A1

    公开(公告)日：2015-06-25

    申请号：US14391870

    申请日：2013-04-12

    申请人： BASF SE

    发明人： Hans Rudolph ,  Rainer Klostermann ,  Torben Kaminsky ,  Bernd Lohaus ,  Jürgen Ahlers ,  Bernhard Schmied ,  Peter Gutmann ,  Klaus Hahn ,  Frank Prissok ,  Elke Marten ,  Christian Däschlein

    IPC分类号： B29C47/00

    CPC分类号： B29C47/0011 ,  B29B9/065 ,  B29B9/12 ,  B29B9/14 ,  B29B9/16 ,  B29C44/3461 ,  B29K2075/00 ,  B29L2031/00 ,  C08G18/0895 ,  C08G18/6674 ,  C08G18/7671 ,  C08J9/122 ,  C08J9/141 ,  C08J9/16 ,  C08J9/34 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/14 ,  C08J2203/182 ,  C08J2300/22 ,  C08J2367/00 ,  C08J2375/04 ,  C08J2377/00

    摘要： The invention relates to a process for production of expanded pellets from a polymer melt comprising a blowing agent, said process comprising the steps of: a) pressing the polymer melt comprising a blowing agent through a perforated disk controlled to a temperature between 150° C. and 280° C. and into a pelletizing chamber, b) using a cutting device to comminute the polymer melt pressed through the temperature-controlled perforated disk into individual expanding pellets, c) discharging the pellets from the pelletizing chamber using a liquid stream, wherein the blowing agent comprises CO2 or N2 or a combination of CO2 and N2 and the pelletizing chamber is traversed by a stream of liquid which is controlled to a temperature between 10° C. and 60° C. and the pressure of which is from 0.7 bar to 20 bar above ambient pressure, the pressure and temperature for the liquid in the pelletizing chamber and also the temperature for the perforated disk being chosen such that the pellets are expanded in the pressurized liquid by the blowing agent they contain so as to produce expanded pellets having an uninterrupted skin.

    摘要翻译： 本发明涉及一种由包含发泡剂的聚合物熔体制备发泡颗粒的方法，所述方法包括以下步骤：a）将包含发泡剂的聚合物熔体通过控制在150℃之间的多孔板压制 和280℃，并且进入造粒室，b）使用切割装置将通过温度控制的多孔盘压制的聚合物熔体粉碎成单独的膨胀颗粒，c）使用液体流将颗粒从造粒室排出，其中 发泡剂包括CO 2或N 2或CO 2和N 2的组合，并且造粒室通过液体流穿过，该液流被控制在10℃和60℃之间的温度，其压力为0.7巴 在环境压力以上20巴以下，选择造粒室中的液体的压力和温度以及多孔盘的温度，使得颗粒为exp 通过它们包含的发泡剂将其加压在加压液体中以产生具有不间断皮肤的发泡颗粒。