公开(公告)号：US4184911A

公开(公告)日：1980-01-22

申请号：US913315

申请日：1978-06-07

申请人： Hiroyuki Koda ,  Kunio Hamaya ,  Hiroyuki Yoshizaki ,  Yutaka Kojima ,  Shiro Tsuchiya ,  Shinichi Fukuda ,  Takashi Ikeno

发明人： Hiroyuki Koda ,  Kunio Hamaya ,  Hiroyuki Yoshizaki ,  Yutaka Kojima ,  Shiro Tsuchiya ,  Shinichi Fukuda ,  Takashi Ikeno

IPC分类号： C08J3/14 ,  B01D1/24

CPC分类号： C08J3/14 ,  C08J2369/00 ,  Y10S159/10

摘要： A process is disclosed for producing powdery polycarbonate from a polycarbonate solution which comprises:(a) charging the solution into the feed opening of a disolvating apparatus, the apparatus being composed of a casing and having at least two screws incorporated therein, the screws meshing with each other; the apparatus comprising two parts; a evaporating zone and a powdering zone; a space being provided above the screws in the evaporating zone, the space extending in the axial direction of the screws and having at least one degassing opening, and side and bottom portions of screws generally fitting with the casing in the evaporating zone; top, side and bottom portions of screws generally fitting with the casing in the powdering zone, heating means being installed in the casing and/or screws;(b) in the evaporating zone, evaporating the solvent of the polycarbonate solution using the heating means while moving the solution by the screws;(c) powdering the dried polycarbonate in the powdering zone; and(d) discharging the powdery polycarbonate from the product exit in the powdering zone.

摘要翻译： 公开了一种从聚碳酸酯溶液制备粉状聚碳酸酯的方法，该方法包括：（a）将溶液装入分散装置的进料口中，该装置由壳体组成，其中并入有至少两个螺杆，螺钉与 彼此; 该装置包括两部分; 蒸发区和粉化区; 在蒸发区域的螺钉上方设置空间，该空间沿螺杆的轴向方向延伸，并且具有至少一个脱气开口，以及通常与壳体配合在蒸发区域中的螺钉的侧部和底部; 螺丝的顶部，侧面和底部通常与壳体配合在粉化区域中，加热装置安装在壳体和/或螺钉中; （b）在蒸发区内，用螺丝移动溶液时，使用加热装置蒸发聚碳酸酯溶液的溶剂; （c）将干燥的聚碳酸酯粉化在粉化区中; 和（d）从粉状区域中的产品出口排出粉末状聚碳酸酯。