会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Process for continuously polymerizing trioxane
    • 连续聚合三恶烷的方法
    • US4343929A
    • 1982-08-10
    • US200065
    • 1980-10-23
    • Akitoshi SugioKazuyoshi TakaAkira AmemiyaTomotaka FurusawaMutsuhiko TakedaKatsumasa TanakaToshikazu UmemuraYoshihiro Ono
    • Akitoshi SugioKazuyoshi TakaAkira AmemiyaTomotaka FurusawaMutsuhiko TakedaKatsumasa TanakaToshikazu UmemuraYoshihiro Ono
    • B01J19/20C08G2/00C08G2/10C08G2/18
    • C08G2/00B01J19/20C08G2/10C08G2/18B01J2219/00779B01J2219/182
    • A process for producing a polyacetal homopolymer or copolymer which comprises continuously feeding a liquid starting mixture containing molten trioxane and a catalyst and optionally a comonomer through a feed opening of a reactor, said reactor being a continuously stirring-type mixer having two stirring shafts having a plurality of plate-like paddles fixed thereto the cross-section of each of said paddles taken perpendicularly of the axial direction of the stirring shaft having a shape of a convex lens, an ellipse or a quasipolygon inscribing a phantom circle at each vertex, one of said paddles facing another paddle fixed to the other stirring shaft and said one paddle being positioned such that it rotates while the edges thereof keep a slight clearance from the inner surface of the barrel and the other paddle; polymerizing the starting mixture while moving it toward the discharge opening by the rotation of the paddles, the improvement wherein the profiles of the paddles are changed, or the arrangement of the paddles is changed continuously or stepwise, so that the transportability of the reaction mixture becomes progressively smaller from the feed opening toward the discharge opening of the reactor.
    • 一种制备聚缩醛均聚物或共聚物的方法,其包括通过反应器的进料口连续地供给含有熔融三恶烷和催化剂和任选的共聚单体的液体起始混合物,所述反应器是具有两个搅拌轴的连续搅拌型混合器, 多个板状的叶片固定在其上,垂直于搅拌轴的轴向垂直于每个顶点形成凸透镜,椭圆形或准圆体的形状的每个顶板上的假体圆的横截面, 所述桨叶面向固定到另一个搅拌轴的另一个桨叶,并且所述一个桨叶定位成使得其旋转,同时其边缘保持与筒体和另一个桨叶的内表面的微小间隙; 使起始混合物通过桨叶的旋转而朝向排出口移动而聚合起始混合物,改进了桨叶的轮廓改变,或者桨叶的排列被连续或逐步地改变,使得反应混合物的输送性变为 从进料口向反应器的排出口逐渐变小。