利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.032 秒)

    Continuous process for producing poly (trimethylene terephthalate)
    1.
    发明申请
    Continuous process for producing poly (trimethylene terephthalate) 有权
    生产聚对苯二甲酸丙二醇酯的连续工艺

    公开(公告)号：US20050165178A1

    公开(公告)日：2005-07-28

    申请号：US11093092

    申请日：2005-03-29

    申请人： Carl Giardino ,  David Griffith ,  Chungfan Ho ,  James Howell ,  Michelle Watkins

    发明人： Carl Giardino ,  David Griffith ,  Chungfan Ho ,  James Howell ,  Michelle Watkins

    IPC分类号： C08F2/00 ,  C08G63/183 ,  C08G63/78 ,  C08G85/00

    CPC分类号： C08G63/183 ,  C08G63/78 ,  Y10T428/2913 ,  Y10T428/31786

    摘要： A continuous process for the production of poly(trimethylene terephthalate) is disclosed. According to the process, a liquid feed mixture comprising bis-3-hydroxypropyl terephthalate and/or low molecular weight polyesters of 1,3-propanediol and terephthalic acid, the liquid feed mixture having a mole ratio of propylene groups to terephthalate groups of 1.1 to 2.2 is fed to a flasher. A first stream of gaseous by-products is continuously vaporized and removed from the flasher, and a liquid flasher reaction product having a mole ratio of propylene groups to terephthalate groups of less than about 1.5 is continuously withdrawn from the flasher. The liquid flasher reaction product is continuously fed to a prepolymerizer where it is continuously polymerized to form a poly(trimethylene terephthalate) prepolymer and a second stream of gaseous by-products. Poly(trimethylene terephthalate) prepolymer having a relative viscosity of at least about 5 is continuously withdrawn from the prepolymerizer and continuously fed to a final polymerizer, where it is continuously polymerized to form a higher molecular weight poly(trimethylene terephthalate) and a third stream of gaseous by-products. Higher molecular weight poly(trimethylene terephthalate) having a relative viscosity of at least about 17 is continuously withdrawn from the final polymerizer.

    摘要翻译： 公开了生产聚（对苯二甲酸丙二醇酯）的连续方法。 根据该方法，将包含1,3-丙二醇和对苯二甲酸的低分子量聚酯的双-3-羟丙基对苯二甲酸酯和/或低分子量聚酯的液体进料混合物，该丙烯与对苯二甲酸酯基的摩尔比为1.1〜 2.2被送入闪光器。 气态副产物的第一流被持续蒸发并从闪蒸器中除去，并且具有小于约1.5的丙烯与对苯二甲酸酯基的摩尔比的液体闪蒸反应产物从闪蒸器中连续排出。 将液体闪蒸反应产物连续进料到预聚合器中，在其中连续聚合以形成聚（对苯二甲酸丙二醇酯）预聚物和第二气态副产物流。 相对粘度至少为约5的聚（对苯二甲酸丙二醇酯）预聚物从预聚合器中连续排出，并连续进料至最终聚合反应器，在其中连续聚合形成较高分子量的聚对苯二甲酸丙二醇酯 气态副产品。 相对粘度至少约为17的较高分子量聚（对苯二甲酸丙二醇酯）从最终聚合反应器中连续排出。

    Continuous manufacture of poly(trimethylene terephthalate)
    2.
    发明申请
    Continuous manufacture of poly(trimethylene terephthalate) 有权
    连续制造聚对苯二甲酸丙二醇酯

    公开(公告)号：US20070191581A1

    公开(公告)日：2007-08-16

    申请号：US11638978

    申请日：2006-12-14

    申请人： John Eng ,  Emily Blum ,  Daniel Green ,  Carl Giardino ,  Gene Parrish ,  Robert Trotter ,  Gary Wilson

    发明人： John Eng ,  Emily Blum ,  Daniel Green ,  Carl Giardino ,  Gene Parrish ,  Robert Trotter ,  Gary Wilson

    IPC分类号： C08G63/02

    CPC分类号： C08G63/78 ,  Y10T29/49005

    摘要： This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by-product resulting from the process is condensed in a condenser, the total amount of any trimethylene terephthalate cyclic dimer and poly(trimethylene terephthalate) in the condensed by-product 1,3-propanediol is adjusted, and a portion of the condensed by-product is recycled to the condenser while another portion is recycled back into the process.

    摘要翻译： 本发明涉及生产聚（对苯二甲酸丙二醇酯）的连续方法，其中由该方法得到的气态1,3-丙二醇副产物在冷凝器中冷凝，任何三亚甲基对苯二甲酸酯环状二聚体和聚（对苯二甲酸丙二醇酯 ）在缩合的副产物1,3-丙二醇中进行调节，一部分冷凝的副产物被再循环到冷凝器中，而另一部分被循环回到该方法中。