Title:
オキシメチレン共重合体の製造に用いられる二軸押出機及びオキシメチレン共重合体の製造方法
Document Type and Number:
Japanese Patent JP6891652
Kind Code:
B2
Abstract:
To provide a biaxial extruder used for manufacturing an oxymethylene copolymer, capable of effectively degassing formaldehyde, and a manufacturing method of the oxymethylene copolymer.SOLUTION: A first biaxial extruder 100 mainly has a cylinder 110 and a screw 120. The cylinder 110 mainly has a double cylindrical hole 111, a second vent port 104, and a third vent port 105. The screw 120 mainly has a first to sixth transportation parts 121, 123, 125, 127, 129, 131, a first mix part 122, a second mix part 124, a third mix part 126, a seal ring 128, and a fourth mix part 130. The third mix part 126 overlaps with the second vent port 104 as a half of an axis direction length of the second vent port 104. Similarly, the fourth mix part 130 overlaps with the third vent port 105 as a half of an axis direction length of the third vent port 105.SELECTED DRAWING: Figure 1
Inventors:
Daisuke Sucho
Mikami
Mikami
Application Number:
JP2017115385A
Publication Date:
June 18, 2021
Filing Date:
June 12, 2017
Export Citation:
Assignee:
Mitsubishi Gas Chemical Co., Ltd.
International Classes:
C08G2/28; B29B7/48; B29B7/58; B29B7/84
Domestic Patent References:
| JP10024483A | ||||
| JP9070872A |
Attorney, Agent or Firm:
Hiroshi Kobayashi
Kyoei Sugiyama
Takuya Fuji
Yasuhito Suzuki
Kyoei Sugiyama
Takuya Fuji
Yasuhito Suzuki