Title:
FILTER DEVICE FOR POLYCARBONATE AND PRODUCTION METHOD FOR POLYCARBONATE
Document Type and Number:
WIPO Patent Application WO/2001/000298
Kind Code:
A1
Abstract:
A filter device for polycarbonate comprising, as constituting elements, a filter vessel of a specific structure, a flange plate, one or more leaf-disk type filters, a filter retainer, and a center pole formed integrally with the filter retainer; and a production method for polycarbonate using the filter device. Foreign matters are efficiently removed by using polycarbonate, and, at the same time, coloring, crosslinking and gel occurring are restricted, thereby producing a high-quality polycarbonate.
Inventors:
MURAKAMI MASAHIRO (JP)
MATSUOKA YOSHIKI (JP)
SAWAKI TORU (JP)
SASAKI KATSUSHI (JP)
MATSUOKA YOSHIKI (JP)
SAWAKI TORU (JP)
SASAKI KATSUSHI (JP)
Application Number:
PCT/JP2000/004014
Publication Date:
January 04, 2001
Filing Date:
June 20, 2000
Export Citation:
Assignee:
TEIJIN LTD (JP)
MURAKAMI MASAHIRO (JP)
MATSUOKA YOSHIKI (JP)
SAWAKI TORU (JP)
SASAKI KATSUSHI (JP)
MURAKAMI MASAHIRO (JP)
MATSUOKA YOSHIKI (JP)
SAWAKI TORU (JP)
SASAKI KATSUSHI (JP)
International Classes:
B01D29/41; B29B13/10; C08G64/04; C08G64/40; B01D29/39; (IPC1-7): B01D29/41; B01D35/02; B29B13/10; C08G64/40; C08J3/00
Foreign References:
| JPH09122408A | 1997-05-13 | |||
| JPS5920807U | 1984-02-08 | |||
| JPS6017210U | 1985-02-05 | |||
| JPH09314643A | 1997-12-09 |
Other References:
MIKIO MATSUGANE: "Plastic zairyou kouza (5): Polycarbonate jushi", NIKKAN KOGYO SHINBUNSHA, 30 September 1969 (1969-09-30), (TOKYO), pages 62 - 67, XP002946554
See also references of EP 1112771A4
See also references of EP 1112771A4
Attorney, Agent or Firm:
Maeda, Sumihiro (Intellectual Property Center 1-1 Uchisaiwaicho
2-chome Chiyoda-ku, Tokyo, JP)
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