VERFAHREN UND VORRICHTUNG ZUR GRANULIERUNG VON TREIBMITTELHALTIGEN POLYMERSCHMELZEN
    3.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR GRANULIERUNG VON TREIBMITTELHALTIGEN POLYMERSCHMELZEN 有权
    方法和设备的发泡剂造粒含聚合物熔体

    公开(公告)号:EP1998948A1

    公开(公告)日:2008-12-10

    申请号:EP07726931.4

    申请日:2007-03-15

    Applicant: BASF SE

    CPC classification number: B29B9/065 B29B9/16 B29C44/3461

    Abstract: The invention relates to a method and a device for granulating polymer melts containing blowing agent in a granular heating chamber, through which there flows a liquid at a pressure above ambient pressure. In a first step, the polymer melt is forced into the granulating chamber, in a second step the polymer melt is cut by a cutting device into individual granular grains and in a third step the granular grains produced in the granulation are discharged with the liquid from the granulating chamber and separated from the liquid. The method additionally comprises at least one of the following steps: (a) comminuting agglomerates or granular grains that exceed a predetermined maximum size, in a comminuting machine arranged downstream of the granulating chamber or in a comminuting unit arranged downstream of the cutting device, (b) allowing the liquid to expand in an expansion machine, (c) allowing the liquid to expand in a throttle device, a pressure equalizing tank being arranged upstream of the throttle device, (d) separating the granular grains from the liquid without previously allowing the liquid to expand with the granular grains contained in it.

    VERFAHREN UND VORRICHTUNG ZUR GRANULIERUNG VON TREIBMITTELHALTIGEN POLYMERSCHMELZEN

    公开(公告)号:EP1998948B1

    公开(公告)日:2010-11-03

    申请号:EP07726931.4

    申请日:2007-03-15

    Applicant: BASF SE

    CPC classification number: B29B9/065 B29B9/16 B29C44/3461

    Abstract: The invention relates to a method and a device for granulating polymer melts containing blowing agent in a granular heating chamber, through which there flows a liquid at a pressure above ambient pressure. In a first step, the polymer melt is forced into the granulating chamber, in a second step the polymer melt is cut by a cutting device into individual granular grains and in a third step the granular grains produced in the granulation are discharged with the liquid from the granulating chamber and separated from the liquid. The method additionally comprises at least one of the following steps: (a) comminuting agglomerates or granular grains that exceed a predetermined maximum size, in a comminuting machine arranged downstream of the granulating chamber or in a comminuting unit arranged downstream of the cutting device, (b) allowing the liquid to expand in an expansion machine, (c) allowing the liquid to expand in a throttle device, a pressure equalizing tank being arranged upstream of the throttle device, (d) separating the granular grains from the liquid without previously allowing the liquid to expand with the granular grains contained in it.

    Abstract translation: 本发明涉及一种用于造粒聚合物熔体的方法和设备,所述聚合物熔体在造粒室中包含发泡剂,液体通过所述发泡剂,其压力高于环境压力。 在第一步骤中,将聚合物熔体注射到造粒室中,在第二步骤中,聚合物熔体通过切割装置切割成单个颗粒,并且在第三步中,在造粒过程中产生的颗粒用液体 从造粒室中分离,然后与液体分离。 该方法还包括以下步骤中的至少一个:(a)在造粒室下游的粉碎机或切割装置下游的粉碎单元中粉碎团聚体或超过规定最大尺寸的颗粒,(b )减压机中的液体的减压,(c)节流装置中的液体的减压,其中在节流装置的上游存在压力均衡容器,(d)颗粒与液体的分离,没有 任何现有的液体与其包含的颗粒的减压。

    VERFAHREN ZUR HERSTELLUNG VON EXPANDIERBAREN STYROLPOLYMERISATEN

    公开(公告)号:EP1994085B1

    公开(公告)日:2009-05-13

    申请号:EP07712339.6

    申请日:2007-02-27

    Applicant: BASF SE

    Abstract: A process for preparing expandable styrene polymers with narrow bead size distribution, which can be processed to foams with homogeneous cell structure and low thermal conductivity, by polymerizing the monomers in aqueous suspension in the presence of a volatile blowing agent and from 0.1 to 30 ppm, based on the organic phase, of a hydroxyalkylamine.

    Abstract translation: 本发明涉及一种制备具有窄珠尺寸分布的可膨胀苯乙烯聚合物的方法,所述可膨胀苯乙烯聚合物可通过在存在挥发性发泡剂的情况下在含水悬浮液中聚合所述单体而被加工成具有均质泡孔结构和低导热率的泡沫, 基于有机相的羟烷基胺。

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