Title:
METHOD FOR PRODUCING A POLYSULFIDE
Document Type and Number:
WIPO Patent Application WO/2001/018278
Kind Code:
A1
Abstract:
A method for producing a polysulfide by subjecting a solution containing a sulfide to electrolytic oxidation in an electrolytic bath (1,2) equipped with anode chambers (11, 21) having anodes (13, 23), cathode chambers (14, 24) having cathodes (15, 25), and diaphragms (16, 26) partitioning an anode chamber and a cathode chamber to, wherein conditions for electrolysis reaction are set depending upon the position in the direction of stream of a solution in the electrolytic bath. The method can be used for producing polysulfide sulfur in a high concentration while inhibiting the dissolution of an electrode material of an anode and the by-production of thiosulfate ion.
Inventors:
ENDOH EIJI (JP)
SHIMOHIRA TETSUJI (JP)
ANDOH TATSUYA (JP)
TANAKA JUNJI (JP)
WATANABE KEIGO (JP)
SHIMOHIRA TETSUJI (JP)
ANDOH TATSUYA (JP)
TANAKA JUNJI (JP)
WATANABE KEIGO (JP)
Application Number:
PCT/JP2000/006034
Publication Date:
March 15, 2001
Filing Date:
September 06, 2000
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
KAWASAKI KASEI CHEMICALS (JP)
JUJO PAPER CO LTD (JP)
ENDOH EIJI (JP)
SHIMOHIRA TETSUJI (JP)
ANDOH TATSUYA (JP)
TANAKA JUNJI (JP)
WATANABE KEIGO (JP)
KAWASAKI KASEI CHEMICALS (JP)
JUJO PAPER CO LTD (JP)
ENDOH EIJI (JP)
SHIMOHIRA TETSUJI (JP)
ANDOH TATSUYA (JP)
TANAKA JUNJI (JP)
WATANABE KEIGO (JP)
International Classes:
C25B9/19; D21C3/02; D21C11/00; D21C11/02; (IPC1-7): C25B1/22; C25B3/02; C25B15/02; C01B17/34; D21C11/04
Domestic Patent References:
| WO1999062818A1 | 1999-12-09 |
Foreign References:
| JP2000247611A | 2000-09-12 | |||
| JP2000247612A | 2000-09-12 |
Attorney, Agent or Firm:
Senmyo, Kenji (Kanda-Higashimatsushitacho Chiyoda-ku Tokyo, JP)
Download PDF:
Previous Patent: ORNAMENT AND METHOD FOR PREPARATION THEREOF
Next Patent: IMPROVED APERTURE PLATE AND METHODS FOR ITS CONSTRUCTION AND USE
Next Patent: IMPROVED APERTURE PLATE AND METHODS FOR ITS CONSTRUCTION AND USE