Process for the production of polycarbonate
    11.
    发明授权
    Process for the production of polycarbonate 有权
    聚碳酸酯生产工艺

    公开(公告)号:US07129315B2

    公开(公告)日:2006-10-31

    申请号:US11105680

    申请日:2005-04-14

    IPC分类号: C08G64/00

    CPC分类号: C08G64/403 C08G64/205

    摘要: A process for the isolation of polycarbonate produced by the interfacial polymerization process is disclosed. Accordingly, the process entails (a) evaporating the organic solvent from the solution that contains solvent and polycarbonate to obtain a material system that contains 90 to 99.95% polycarbonate, the percent being relative to the weight of the system, and (b) passing the material system through inlet openings of a separating vessel to obtain a plurality of streams of polycarbonate, on entry into the inlet openings said material system being supersaturated with volatile constituents to an extent of at least 1 bar and having a temperature of 250° to 340° C. and a flow rate of 0.1 to 20 kg/hour, and (c) degassing the streams in the separating vessel wherein the pressure is 0.1 to 20 mbar to effect degassing of the polycarbonate.

    摘要翻译: 公开了通过界面聚合方法分离聚碳酸酯的方法。 因此,该方法需要(a)从含有溶剂和聚碳酸酯的溶液中蒸发有机溶剂以获得含有90至99.95%聚碳酸酯的材料体系,其百分数相对于体系重量,和(b)使 材料系统通过分离容器的入口开口,以获得多个聚碳酸酯流,在进入入口时,所述材料体系用挥发性成分过饱和至少1巴,温度为250°至340° 并且流速为0.1至20kg /小时,和(c)使分离容器中的气流脱气,其中压力为0.1至20毫巴,以实现聚碳酸酯脱气。

    Process for the preparation of polycarbonate
    12.
    发明授权
    Process for the preparation of polycarbonate 有权
    制备聚碳酸酯的方法

    公开(公告)号:US07091302B2

    公开(公告)日:2006-08-15

    申请号:US11105678

    申请日:2005-04-14

    IPC分类号: C08G64/00

    CPC分类号: C08G64/205 C08G64/307

    摘要: The invention describes a process for the preparation of polycarbonate. The process includes (a) transesterifying at least one aromatic dihydroxyaryl compound and a diaryl carbonate in the melt in the presence of a catalyst, (b) mixing the melt obtained in step (a) with a foaming agent (c) passing the mixture at 250 to 340° C. through inlet openings of a separating vessel at a rate of 0.1 to 20 kg/hour, to obtain a plurality of streams of foamed polycarbonate and degassing the streams of foamed polycarbonate in the separating vessel wherein the pressure is 0.1 to 20 mbar.

    摘要翻译: 本发明描述了制备聚碳酸酯的方法。 该方法包括(a)在催化剂存在下,在熔体中将至少一种芳族二羟基芳基化合物和碳酸二芳基酯酯交换反应,(b)将步骤(a)中获得的熔体与通过该混合物的发泡剂(c) 通过分离容器的入口开口以0.1至20kg /小时的速度通过入口开口250至340℃,以获得多个发泡聚碳酸酯流并在分离容器中对发泡聚碳酸酯流进行脱气,其中压力为0.1至 20毫巴

    Extruder with integrated die plate and method for degasing polymer mixtures
    13.
    发明授权
    Extruder with integrated die plate and method for degasing polymer mixtures 有权
    具有集成模板的挤出机和用于脱胶聚合物混合物的方法

    公开(公告)号:US09023983B2

    公开(公告)日:2015-05-05

    申请号:US13811330

    申请日:2011-07-22

    摘要: The invention is directed to an extruder (10), particularly for extruding a synthetic rubber product, which comprises a barrel (24), one or several extruder elements (12, 14), particularly one or several extruder screws and/or a kneader elements (14), arranged inside the barrel (24) for conveying the product, optionally an inlet port for feeding a stripping agent into the barrel (24) and an outlet port for removing volatile compounds from the product and, where applicable, the stripping agent. According to the invention a perforated die plate (26) is fixed to the barrel (24) in flow direction before the outlet port. Since the die plate (26) is not fixed to the extruder elements (12, 14) but to the barrel (24) a circumferential clearance between the die plate (26) and the barrel (24) is prevented so that no extruded material is passing the die plate (26) radially outside. Parts of the extruded material comprising a low surface area to volume ratio are prevented so that the evaporation of volatile compounds is facilitated.

    摘要翻译: 本发明涉及挤出机(10),特别是用于挤出合成橡胶产品,其包括桶(24),一个或多个挤出机元件(12,14),特别是一个或多个挤出机螺杆和/或捏合元件 (14),布置在所述筒体(24)内用于输送所述产品,任选地用于将汽提剂进料到所述筒体(24)中的入口和用于从所述产品中除去挥发性化合物的出口端口,以及在适用的情况下,所述汽提剂 。 根据本发明,穿孔模板(26)在出口之前沿流动方向固定到筒体(24)。 由于模板(26)不固定到挤出机元件(12,14)而是固定到筒体(24)上,因此防止了模板(26)和筒体(24)之间的周向间隙,使得不挤出材料 径向地穿过模板(26)。 防止包含低表面积与体积比的挤出材料的部分,从而促进挥发性化合物的蒸发。

    Apparatus for carrying out mass transfer processes
    18.
    发明授权
    Apparatus for carrying out mass transfer processes 失效
    用于进行传质过程的装置

    公开(公告)号:US06761797B2

    公开(公告)日:2004-07-13

    申请号:US09995139

    申请日:2001-11-27

    IPC分类号: B01D100

    摘要: Apparatus for carrying out mass transfer processes with high-viscosity liquids comprising a vertically arranged vessel (1) having a feeder (4) for the liquid to be treated, an outlet (7) for volatile components and an outlet (6) for the treated liquid, the feeder means (4) being equipped with a distributor element (3) having a multiplicity of orifices (8, 10) for subdividing the high-viscosity liquid to be treated into a multiplicity of individual streams, wherein essentially vertically arranged wire loops (2) are disposed in the vicinity of the orifices (8, 10), along which wire loops the high-viscosity liquid runs off under the action of gravity.

    摘要翻译: 用于使用高粘度液体进行质量传递过程的装置,包括垂直布置的容器(1),其具有用于待处理液体的进料器(4),用于挥发性组分的出口(7)和用于处理过的 进料装置(4)装备有具有多个孔(8,10)的分配器元件(3),用于将待处理的高粘度液体细分成多个单独的流,其中基本垂直布置的线环 (2)设置在所述孔(8,10)附近,所述高粘度液体沿重力作用沿着所述孔排出。

    Polyamide composition and method for producing the same
    19.
    发明授权
    Polyamide composition and method for producing the same 失效
    聚酰胺组合物及其制备方法

    公开(公告)号:US06710159B2

    公开(公告)日:2004-03-23

    申请号:US10239982

    申请日:2002-09-26

    IPC分类号: C08G6908

    CPC分类号: C08G69/28 C08G69/16 C08G69/46

    摘要: A process for producing a polyamide or copolyamide freed from volatile constituents by removing the volatile constituents, in particular the monomers and dimers, in at least two stages from the polymer melt by using an, in particular, gaseous entrainer is described. The invention also relates to polyamide compositions made of polyamide 6 or a copolyamide with a reduced volatile constituent content, as well as moulding compositions made of the above-mentioned polyamides, and moulded articles and fibers which are produced from these moulding compositions.

    摘要翻译: 描述了通过使用特别是气体夹带剂从聚合物熔体至少两个阶段除去挥发性成分,特别是单体和二聚体,从而形成不含挥发性成分的聚酰胺或共聚酰胺的方法。 本发明还涉及由聚酰胺6或具有降低的挥发性组分含量的共聚酰胺制成的聚酰胺组合物以及由上述聚酰胺制成的模塑组合物,以及由这些模塑组合物制备的模塑制品和纤维。