Asahi Glass Company, Limited

Agc Engineering Co., Ltd.

Daiso Co., Ltd.

Yukio Matsumura

Yoshio Sugaya

Hiroshi Toda

Hirohisa Kubota

Makoto Nakao

Shouhei Matsui

Toshikatsu Hamano

Yasushi Yoshida

Takashi Nakayama

Kazumi Ohshima

Nobuyoshi Shoji

Shuichi Ohkawa

Kouji Nobuta

Taigo Ohsawa

Tadao Yuki

Kazuo Kitamura

Eiji Itoi

There is provided a method for producing a chamber frame for a dialyzer, which is readily produced, has a stable quality, is inexpensive and is excellent in sealing property and heat resistance. A cut frameis set on an unshown table of an impulse welder, distributorsare fitted into communicating passageand communicating passages, and a netis positioned so as to cover a central opening. Welded portions A and B, and the welded portions C and D are subjected to impulse welding. Mounting of the netas a spacer and mounting of the distributorsare carried out simultaneously by a single pressing operation. After that, the welded portions of the net are deburred, and correction work is performed on defects.

Method for producing dialysis tank chamber frame

In order to solve various problems such as a reduction in a paint resin with the progress of electrodeposition coating treatment and remelting of a coating film or the occurrence of pinholes caused by an increased concentration of an electrolyte as a result of the reduction, upsizing of a hollow electrode with a membrane for electrodeposition coating combined with a barrier membrane (e.g., an ion exchange membrane) and an increase in the number of components should be avoided. In order to realize this, a barrier membranesuch as an ion exchange membrane is attached to the exterior surface of an electrode main body, which is in a hollow state made of a conductive material and configured so as to allow a liquid to pass through freely between the inside and outside of the electrode serving as a support.

Hollow electrode with film for electrodeposition coating

An anion exchange membrane comprising a resin phase which contains from 20 to 96 mass % of a polymer having repeating units represented by the following formula (1): wherein A is a Calkylene group or an alkyleneoxyalkyl group having a total carbon number of from 4 to 9, each of R, Rand Ris a hydrogen atom, a Calkyl group or a hydroxyalkyl group, and Xis an anion, and wherein any hydrogen atom bonded to the benzene ring may be substituted by an alkyl group or a halogen atom, and from 4 to 80 mass % of a thermoplastic polymer having no ion exchange groups, substantially uniformly.

Anion exchange membrane, process for its production and solution treating apparatus

Method for producing deionized water

An electro-regenerating type apparatus for producing deionized water, which comprises an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between an anode compartment provided with an anode and a cathode compartment provided with a cathode, demineralizing compartments compartmentalized with the anion exchange membranes on the anode side and compartmentalized with the cation exchange membranes on the cathode side, and concentrating compartments compartmentalized with the cation exchange membranes on the anode side and compartmentalized with the anion exchange membranes on the cathode side, the electrodialyzer having ion exchangers accommodated in the demineralizing compartments, wherein a porous anion exchanger layer having a porosity of from 20 to 95%, a maximum pore size of from 0.01 to 500 &mgr;m and a thickness of at least five times the maximum pore size and from 10 &mgr;m to 10 mm, is provided on the anode side of each anion exchange membrane.

Electro-regenerating type apparatus for producing deionized water

A method for treating a plating solution in an electrolytic cell having a cathode compartment and an anode compartment partitioned by an ion-exchange membrane, which comprises supplying a plating solution containing not more than 10 g/liter of Fe.sup.3+ ions to the cathode compartment and an electrically conductive solution to the anode compartment, and electrolytically reducing the Fe.sup.3+ ions in the plating solution to Fe.sup.2+ ions, wherein an electrode having a hydrogen overvoltage of not higher than 350 mV, preferably made of a carbon material, is used as a cathode.

Method for treating a plating solution

A purification of an aqueous solution of potassium chloride which is used for producing potassium hydroxide by an electrolysisin an electrolytic cell using a cation exchange membrane is carried out by incorporating an oxidizing reagent to remove additives as an anticaking reagent.

Purification of aqueous solution of potassium chloride

Growing community of inventors

Chiba, Japan

Yukio Matsumura