利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.008 秒)

    Manufacture of ethylene copolymers
    1.
    发明授权
    Manufacture of ethylene copolymers 失效
    乙烯共聚物的制造

    公开(公告)号：US4217431A

    公开(公告)日：1980-08-12

    申请号：US2330

    申请日：1979-01-10

    申请人： Wieland Zacher ,  Klaus Pfleger ,  Klaus Boettcher ,  Ronald Skorczyk ,  Oskar Buechner

    发明人： Wieland Zacher ,  Klaus Pfleger ,  Klaus Boettcher ,  Ronald Skorczyk ,  Oskar Buechner

    IPC分类号： C08F10/00 ,  C08F2/34 ,  C08F210/02 ,  C08F6/00

    CPC分类号： C08F210/02

    摘要： A continuous process for the manufacture of ethylene copolymers under high pressure and at high temperature in a polymerization zone, with transfer of the reaction mixture into a high pressure product isolation zone and from there into a low pressure product isolation zone, and recycling of the unconverted gas from the high pressure product isolation zone into the polymerization zone and from the low pressure product isolation zone into a low temperature separator, from where the comonomer separated off is recycled to the polymerization process, while the ethylene is discharged as off-gas. The gas taken off the low pressure product isolation zone is preferably compressed to from 10 to 20 bar and cooled to from -10.degree. to -30.degree. C. before it is fed into the low temperature separator. There is a substantial improvement in the efficiency of separating off the comonomer.

    摘要翻译： 在高压和高温下在聚合区中制造乙烯共聚物的连续方法，将反应混合物转移到高压产物隔离区，并从那里转移到低压产物隔离区，并将未转化的 气体从高压产物隔离区进入聚合区，从低压产物隔离区进入低温分离器，从分离出的共聚单体再循环到聚合过程中，而乙烯作为废气排出。 从低压产品隔离区取出的气体优选压缩至10〜20巴，冷却至-10〜-30℃，然后送入低温分离器。 分离共聚单体的效率有显着改善。

    Production of ethylene copolymers
    2.
    发明授权
    Production of ethylene copolymers 失效
    乙烯共聚物的生产

    公开(公告)号：US4260722A

    公开(公告)日：1981-04-07

    申请号：US97838

    申请日：1979-11-27

    申请人： Klaus Pfleger ,  Wieland Zacher ,  Klaus Boettcher ,  Ronald Skorczyk ,  Oskar Buechner ,  Franz G. Mietzner

    发明人： Klaus Pfleger ,  Wieland Zacher ,  Klaus Boettcher ,  Ronald Skorczyk ,  Oskar Buechner ,  Franz G. Mietzner

    IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F8/00 ,  C08F10/00 ,  C08F210/02

    CPC分类号： C08F210/02

    摘要： A process for the continuous production of an ethylene copolymer by compressing a mixture of ethylene and comonomer in a pre-compressor and a post-compressor, copolymerizing the mixture in a polymerization zone at a high temperature and high pressure, transferring the reaction mixture into a high pressure product isolation zone, from there into a low pressure product isolation zone and thereafter into a discharge extruder, and recycling the greater part of the unconverted monomer into the polymerization process and passing a small part of the unconverted gas into a low temperature isolation zone, in which process a small part of the gas recycled from the high pressure product isolation zone is passed into the low temperature isolation zone, which is preferably under a pressure of from 10 to 30 bar and at from -10.degree. to -50.degree. C., and all the gas taken off the low pressure product isolation zone is fed to the pre-compressor. Using the novel process, the separating-off of the comonomer which has remained unconverted in the polymerization process can be improved.

    摘要翻译： 通过在预压缩机和后压缩机中压缩乙烯和共聚单体的混合物来连续生产乙烯共聚物的方法，在高温高压下将混合物在聚合区中共聚，将反应混合物转移到 高压产品隔离区，从那里进入低压产品隔离区，然后进入排出挤出机，并将大部分未转化的单体再循环到聚合过程中，并将未转化的气体的一小部分通入低温隔离区 在该方法中，将从高压产物隔离区再循环的少量气体通入低温隔离区，优选在10〜30巴的压力和-10℃〜-50℃ 将从低压产品隔离区取出的全部气体送入预压缩机。 使用该新方法，可以提高在聚合过程中保持未转化的共聚单体的分离。