Polymerization apparatus effective in preventing polymer scale deposition
    3.
    发明授权
    Polymerization apparatus effective in preventing polymer scale deposition 失效
    聚合装置有效防止聚合物垢沉积

    公开(公告)号:US5618497A

    公开(公告)日:1997-04-08

    申请号:US415984

    申请日:1995-04-04

    摘要: A polymerization apparatus, comprises a polymerization vessel, a reflux condenser installed outside the polymerization vessel and a pipe connected between the reflux condenser and a wall of the polymerization vessel with an end thereof opening into a gaseous phase region inside the polymerization vessel, for returning the liquid condensate to the polymerization vessel, wherein said end projects from an inner surface of the wall of the polymerization vessel into the gaseous phase region. In polymerizing a monomer having an ethylenically unsaturated double bond using the polymerization apparatus, the quantity of heat removed by the reflux condenser is increased stepwise or continuously with progress of the polymerization, such that not less than 20% of the total reaction heat generated during the whole course of the polymerization is removed by the reflux condenser. With 100 or more repeated polymerization runs, polymer scale deposition inside the vessel is minimal even below the pipe end.

    摘要翻译: 聚合装置包括聚合容器,安装在聚合容器外部的回流冷凝器和连接在回流冷凝器和聚合容器壁之间的管,其端部开口到聚合容器内的气相区域, 液体冷凝物到聚合容器中,其中所述端部从聚合容器的壁的内表面突出到气相区域中。 在使用聚合装置聚合具有烯键式不饱和双键的单体时,由回流冷凝器除去的热量随着聚合的进行而逐步或连续地增加,使得不少于20℃时产生的反应热总量 通过回流冷凝器除去整个聚合过程。 通过100次或更多次的反复聚合运行,在管端下方,容器内的聚合物垢沉积是最小的。

    Polymerization apparatus and method of producing vinyl chloride type
polymer by using the same
    4.
    发明授权
    Polymerization apparatus and method of producing vinyl chloride type polymer by using the same 失效
    聚合装置及其使用方法制造氯乙烯型聚合物

    公开(公告)号:US5612437A

    公开(公告)日:1997-03-18

    申请号:US364449

    申请日:1994-12-27

    摘要: A vinyl chloride polymer is produced by subjecting vinyl chloride or a monomer mixture made up mainly of vinyl chloride to suspension polymerization in an aqueous medium using a polymerization apparatus equipped with a polymerization vessel. The polymerization apparatus used comprises a polymerization vessel (1) having a substantially cylindrical inner space, said inner space of said polymerization vessel being provided with a plurality of baffles (5) comprising vertically extending pipes, and serpentine pipelines (6) each of which is placed between two adjacent baffles and is extended in a serpentine fashion along the polymerization vessel inner wall from the lower part to the upper part of the polymerization vessel, and a refrigerant being passed through said baffles and said serpentine pipelines. High-cooling performance can be obtained, a high-speed reaction in a large-sized polymerization vessel becomes possible, and a stable polymerization reaction can be carried out. A high-quality and uniform polymer that has few fish eyes and has a high bulk specific gravity can be obtained.

    摘要翻译: 使用装有聚合容器的聚合装置,将氯乙烯或主要由氯乙烯组成的单体混合物在含水介质中进行悬浮聚合来制备氯乙烯聚合物。 使用的聚合装置包括具有基本上圆柱形的内部空间的聚合容器(1),所述聚合容器的内部空间设置有多个包括垂直延伸的管道的挡板(5)和蛇形管道(6) 放置在两个相邻的挡板之间,并且沿着聚合容器内壁从聚合容器的下部延伸到上部延伸,并且制冷剂通过所述挡板和所述蛇形管道。 可以获得高冷却性能,可以在大型聚合容器中进行高速反应,并且可以进行稳定的聚合反应。 可以获得鱼眼少且体积比重高的高质量且均匀的聚合物。

    High-speed maturation method for an oligonucleotide library for the purpose of preparing a protein library
    7.
    发明授权
    High-speed maturation method for an oligonucleotide library for the purpose of preparing a protein library 有权
    用于制备蛋白质文库的寡核苷酸文库的高速成熟方法

    公开(公告)号:US09133452B2

    公开(公告)日:2015-09-15

    申请号:US13806470

    申请日:2011-06-23

    IPC分类号: C12N15/10 C12N15/67

    摘要: The present invention provides a method of producing a maturated oligonucleotide library, including a step of obtaining a terminal-modified product of a maturation target oligonucleotide library, including adding a tag sequence to the 5′ terminus of the maturation target oligonucleotide library and an arrest sequence, which stalls translation elongation on a ribosome, to the 3′ terminus of the maturation target oligonucleotide library, a step of transcribing the terminal-modified sequence product to give a transcript, and a step of in vitro translation for translating the transcript in vitro, wherein the maturation target oligonucleotide library is a random oligonucleotide library.

    摘要翻译: 本发明提供一种生产成熟寡核苷酸文库的方法,包括获得成熟靶寡核苷酸文库的末端修饰产物的步骤,包括向成熟靶寡核苷酸文库的5'末端加入标签序列, ,其将核糖体上的翻译延伸失活到成熟靶寡核苷酸文库的3'末端,转录末端修饰的序列产物以产生转录物的步骤,以及用于体外翻译转录物的体外翻译步骤, 其中成熟靶寡核苷酸文库是随机寡核苷酸文库。

    Process for the production of carbonaceous pitch
    10.
    发明授权
    Process for the production of carbonaceous pitch 失效
    生产碳质沥青的方法

    公开(公告)号:US4663022A

    公开(公告)日:1987-05-05

    申请号:US815923

    申请日:1986-01-03

    CPC分类号: C10G51/023 C10G55/04

    摘要: A continuous process for the production of carbonaceous pitch, including heat-treating an aromatic heavy oil in a first thermal cracking zone for obtaining a first cracked product, and introducing the first cracked product into a second thermal cracking zone where it is thermally cracked by direct contact with a gaseous heat transfer medium to form distillable cracked components and a mesophase-containing pitch. The liquid phase in the second thermal cracking zone, including the mesophase-containing pitch, is discharged therefrom and separated into a mesophase-rich pitch and a matrix pitch having a low concentration of mesophase. The mesophase-rich pitch is recovered while at least a portion of the matrix pitch is recycled to the second thermal cracking zone. The distillable cracked components are stripped from the liquid phase in the second thermal cracking zone with the heat transfer medium, and the resulting gas phase is withdrawn overhead therefrom and then separated into a light fraction and a heavy fraction. The heavy fraction is fed to the first thermal cracking zone.

    摘要翻译: 一种用于生产碳质沥青的连续方法,包括在第一热裂解区中热处理芳族重油以获得第一裂化产物,并将第一裂化产物引入第二热裂解区,其中它通过直接 与气体传热介质接触以形成可蒸馏的裂化组分和含中间相沥青。 包括含中间相沥青的第二热裂解区中的液相从其中排出并分离成富含中间相的沥青和具有低浓度中间相的基体沥青。 回收富含中间相沥青,而将至少一部分基质沥青再循环至第二热裂解区。 在第二热裂解区用传热介质从馏出的液相中蒸馏出馏出的裂化组分,将所得气相从塔顶馏出,然后分离成轻馏分和重馏分。 重馏分被送入第一热裂解区。