Title:
ポリカーボネート樹脂粉粒体の製造方法
Document Type and Number:
Japanese Patent JP4782293
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polycarbonate resin granule having a uniform particle diameter, with an extremely small content of an organic solvent, especially a halogenated hydrocarbon solvent, used in the manufacture of the granule in a stable and highly productive manner. SOLUTION: A water slurry or a humid paste of a polycarbonate resin with the ratio of the polycarbonate resin and the organic solvent at 90:10 to 35:65 in terms of weight ratio and the ratio of water to the polycarbonate resin at 5 pts.wt or more to 100 pts.wt, is dehydrated and finely ground inside an extruder. Next, the grinds are extruded as a coagulation of a fine powder and the extrusions are cut or ground to obtain the polycarbonate resin granule. In the method for manufacturing the polycarbonate resin granule, the water is injected into a spot where the water slurry or the humid paste is finely ground inside the extruder, at the ratio of 0.1 to 20 pts.wt: 100 pts.wt of the polycarbonate resin.
Inventors:
Shinji Kikumoto
Hiroki Yamashita
Atsushi Shimizu
Hiroki Yamashita
Atsushi Shimizu
Application Number:
JP2001046276A
Publication Date:
September 28, 2011
Filing Date:
February 22, 2001
Export Citation:
Assignee:
Teijin Chemicals Ltd.
International Classes:
B29B9/00; C08J3/16; B29K69/00; C08L69/00
Domestic Patent References:
| JP2000128997A | ||||
| JP7268106A | ||||
| JP7268107A | ||||
| JP7316281A | ||||
| JP7316282A | ||||
| JP7278288A | ||||
| JP10298301A |
Foreign References:
| WO1995008585A1 |
Attorney, Agent or Firm:
Hideko Mihara