Process for separating volatile components from polymers
    1.
    发明授权
    Process for separating volatile components from polymers 失效
    挥发性组分与聚合物分离的方法

    公开(公告)号:US07144981B2

    公开(公告)日:2006-12-05

    申请号:US10684600

    申请日:2003-10-14

    IPC分类号: C08F6/00

    CPC分类号: C08F6/003

    摘要: A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in the mixture at an amount less than 20 wt. % relative to the weight of the mixture, and (ii) introducing the mixture in a downward direction under pressure through a plurality of nozzles arranged vertically and next to one another into a degassing container to form an extrudate. The volatile component contains at least one of residual monomers, oligomers and solvents, and the throughput of the mixture per nozzle is 0.3 to 2 kg/h. The vapor pressure of the volatile component of the extrudate is more than 2.5 bar, and the absolute pressure in the degassing container is 50 to 5000 Pa. The polymer prepared by the process is characterized in that it contains volatile components in an amount of less than 300 ppm.

    摘要翻译: 公开了通过蒸发浓缩聚合物的方法。 该方法需要(i)获得含有聚合物和挥发性组分的混合物,所述挥发性组分以小于20重量%的量存在于混合物中。 相对于混合物重量的%,和(ii)通过垂直且彼此相邻布置的多个喷嘴在压力下向下引入混合物到脱气容器中以形成挤出物。 挥发性组分含有残留单体,低聚物和溶剂中的至少一种,并且每个喷嘴的混合物的生产量为0.3至2kg / h。 挤出物的挥发性成分的蒸气压大于2.5巴,脱气容器中的绝对压力为50〜5000Pa。本方法制备的聚合物的特征在于,其含有挥发性成分的量小于 300 ppm。

    EXTRUDER WITH INTEGRATED DIE PLATE AND METHOD FOR DEGASING POLYMER MIXTURES
    10.
    发明申请
    EXTRUDER WITH INTEGRATED DIE PLATE AND METHOD FOR DEGASING POLYMER MIXTURES 有权
    具有整体式切片机的挤出机和用于降低聚合物混合物的方法

    公开(公告)号:US20140039142A1

    公开(公告)日:2014-02-06

    申请号:US13811330

    申请日:2011-07-22

    IPC分类号: B29B7/84

    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。