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    Process for the production of granulates of organic substances present in the form of a melt
    2.
    发明授权
    Process for the production of granulates of organic substances present in the form of a melt 失效
    用于生产以熔体形式存在的有机物颗粒的方法

    公开(公告)号：US4418030A

    公开(公告)日：1983-11-29

    申请号：US330880

    申请日：1981-12-15

    申请人： Ernst-Willi Muller ,  Claus Rathjen

    发明人： Ernst-Willi Muller ,  Claus Rathjen

    IPC分类号： B01D9/00 ,  B01J2/20 ,  C07C67/00 ,  C07C313/00 ,  C07C313/18 ,  C07D277/80 ,  C07D279/16 ,  C07D493/10 ,  B29B1/02

    CPC分类号： B01J2/20 ,  B01D9/0013

    摘要： The organic substance present in the form of a melt is cooled below its solidification point in a twin-screw extruder so that it crystallizes out. The crystallized material is then extruded through a breaker plate at the end of the screw extruder and further cooled. It is essential that the temperature prevailing in the screw extruder, its rotational speed and the temperature of the breaker plate should be adjusted such that from 70% to 99.5% and preferably from 95 to 99.5% of the material has solidified by the time it reaches the end of the screw, the non-crystallized liquid residue only crystallizing out during the subsequent cooling operation. Accordingly, a small residue of melt is present during extrusion through the breaker plate. In addition, extrusion is facilitated if the breaker plate is kept at a temperature in the vicinity of the melting point of the material in question.

    摘要翻译： 熔体形式存在的有机物质在双螺杆挤出机中冷却至凝固点以下，使其结晶出来。 然后将结晶的材料在螺杆挤出机末端通过破碎板挤出并进一步冷却。 必须调整螺杆挤出机中的温度，其旋转速度和破碎板的温度，使得材料的70％至99.5％，优选95至99.5％在其达到时固化 螺杆的末端，非结晶的液体残余物仅在随后的冷却操作期间结晶出来。 因此，在通过破碎板的挤出过程中存在少量熔体。 此外，如果将破碎板保持在所讨论的材料的熔点附近的温度，则促进挤出。

    Continuous solvent-free polymerization of vinyl derivatives
    3.
    发明授权
    Continuous solvent-free polymerization of vinyl derivatives 失效
    乙烯基衍生物的连续无溶剂聚合

    公开(公告)号：US4042768A

    公开(公告)日：1977-08-16

    申请号：US603367

    申请日：1975-08-11

    申请人： Ernst-Willi Muller ,  Manfred Wicke

    发明人： Ernst-Willi Muller ,  Manfred Wicke

    IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F12/00 ,  C08F12/08 ,  C08F212/00 ,  C08F220/00 ,  C08F220/10 ,  C08F6/26 ,  C08F220/14 ,  C08F220/42

    CPC分类号： C08F12/08

    摘要： A process for the polymerization of aromatic vinyl compounds and their copolymerization with alkyl esters or nitriles of acrylic and/or methacrylic acid, wherein1. in a first stage, the monomer or monomers is or are continuously introduced at excess pressure into a first reaction zone and polymerized there to a degree of conversion of 5 - 40% by weight at a temperature of from 80.degree. to 170.degree. C;2. in a second stage, the reaction mixture is conducted at constant pressure into a second reaction zone designed for conducting highly viscous melts, the mixture flowing through this reaction zone at a rate which is 1.1 to 5 times the intrinsic rate, and polymerized there to a degree of conversion of 40 to 95% at temperatures of from 120.degree. to 250.degree. C, the excess pressure in the first and second stage being chosen so that the monomer or monomers is or are liquid, and the polymer is continuously removed from this zone with release of the pressure; and3. in a third stage, unreacted monomer is removed by evaporation, the pressure being chosen so that the monomer or monomers is or are evaporated, and the polymer is discharged as a melt.

    摘要翻译： 芳族乙烯基化合物聚合的方法及其与丙烯酸和/或甲基丙烯酸的烷基酯或腈的共聚合，其中1.在第一阶段，单体或单体中或连续地将其引入到第一反应区内 并且在80〜170℃的温度下，以重量的比例聚合为5〜40％的转化度; 2.在第二阶段，将反应混合物在恒定压力下进入设计用于引导高粘度熔体的第二反应区，混合物以本征速率的1.1至5倍的速率流过该反应区，并在那里聚合 在120至250℃的温度下，转化率为40-95％，选择第一和第二阶段中的过量压力使得单体或单体为液体，并且将聚合物从 该区释放压力; 3.在第三阶段，通过蒸发除去未消除的单体，压力由于单体或单体蒸发而蒸发，聚合物作为熔体被排出。