公开(公告)号：DE3769855D1

公开(公告)日：1991-06-13

申请号：DE3769855

申请日：1987-04-21

Applicant: TOSOH CORP

Inventor： FUKUDA KENICHI ,  KURAUCHI YASUHIRO ,  MORI TAKASHI ,  SUEMATSU TETSUYA

IPC: C08J5/22 ,  C25C1/00 ,  C25C1/20 ,  B01J47/12 ,  C25B13/08

公开(公告)号：DE3780060T2

公开(公告)日：1993-02-25

申请号：DE3780060

申请日：1987-04-07

Applicant: TOSOH CORP

Inventor： FUKUDA KENICHI ,  MORI TAKASHI ,  KURAUCHI YASUHIRO ,  DOI MASAHARU ,  SUEMATSU TETSUYA

IPC: C08J5/22 ,  C25B1/00

Abstract: A method for producing a metal salt by electrolysis in an electrolytic cell comprising an anode compartment and a cathode compartment partitioned by a diaphragm, disposing in the anode compartment a metal anode soluble in the aqueous solution, and conducting electrolysis to dissolve the metal anode, wherein the diaphragm is a fluorinated anion exchange membrane made of a copolymer having repeating units of the formula: wherein X is F or CF3, l is an integer of from 0 to 5, m is 0 or 1, n is an integer of 1 to 5, each of p and q is a positive number and the ratio of p/q is from 2 to 16, and Y is a group involving a quaternary ammonium group.

公开(公告)号：DE3780060D1

公开(公告)日：1992-08-06

申请号：DE3780060

申请日：1987-04-07

Applicant: TOSOH CORP

Inventor： FUKUDA KENICHI ,  MORI TAKASHI ,  KURAUCHI YASUHIRO ,  DOI MASAHARU ,  SUEMATSU TETSUYA

IPC: C08J5/22 ,  C25B1/00

Abstract: A method for producing a metal salt by electrolysis in an electrolytic cell comprising an anode compartment and a cathode compartment partitioned by a diaphragm, disposing in the anode compartment a metal anode soluble in the aqueous solution, and conducting electrolysis to dissolve the metal anode, wherein the diaphragm is a fluorinated anion exchange membrane made of a copolymer having repeating units of the formula: wherein X is F or CF3, l is an integer of from 0 to 5, m is 0 or 1, n is an integer of 1 to 5, each of p and q is a positive number and the ratio of p/q is from 2 to 16, and Y is a group involving a quaternary ammonium group.

公开(公告)号：JPH0365515A

公开(公告)日：1991-03-20

申请号：JP19655389

申请日：1989-07-31

Applicant: TOSOH CORP

Inventor： YAMAMOTO KAZUAKI ,  MORI TAKASHI ,  FUKUDA KENICHI

IPC: C01G33/00

Abstract: PURPOSE:To enable production of a fine sinterable powder having a narrow particle size distribution at a low cost by calcining constituent components having a specified particle size in production of a perovskite-type lead-containing compound oxide represented by ABO3. CONSTITUTION:In production of a perovskite-type lead-containing compound oxide represented by ABO3 (A is Pb and B is Ti, Mg, Nb, Ni, Zn, Zr, Fe, etc.), a powder having

公开(公告)号：JPH0328109A

公开(公告)日：1991-02-06

申请号：JP9882189

申请日：1989-04-20

Applicant: TOSOH CORP

Inventor： FUNAKOSHI HAJIME ,  FUKUDA KENICHI ,  HARA YASUSHI ,  MORI TAKASHI

IPC: C01B13/18 ,  C01G33/00 ,  C01G51/00

Abstract: PURPOSE:To obtain compound oxide powder having a composition of excellent uniformity by heat-treating at a given temperature a precursor for producing a uniform compound oxide comprising a thermally decomposable metallic compound, sol of metal oxide, etc., as raw materials. CONSTITUTION:Plural compounds are selected from a thermally decomposable metallic compound, sol of metal oxide and sol of metal hydroxide. A solution containing the plural compounds and a solvent is blended with a water-soluble polymer compound. Then the solvent is removed from the mixed solution to give a precursor for producing a compound oxide. Then the precursor is heat- treated at >=400 deg.C.

公开(公告)号：JPS6342389A

公开(公告)日：1988-02-23

申请号：JP18515386

申请日：1986-08-08

Applicant: TOSOH CORP

Inventor： MORI TAKASHI ,  FUKUDA KENICHI ,  KURAUCHI YASUHIRO

IPC: C08F214/26 ,  C08F16/14 ,  C08F216/14 ,  C25C7/04

Abstract: PURPOSE:To efficiently obtain a high purity metal by dividing an electrolytic cell into a cathode chamber and an anode chamber with an anion exchange membrane contg. fluorine represented by a prescribed formula and by feeding an aq. soln. contg. metal ions to the cathode chamber and an acid soln. contg. the same kind of anions as the aq. soln. the the anode chamber. CONSTITUTION:An anion exchange membrane contg. fluorine is made of a copolymer having repeating units represented by the formula (where X is F or CF3, l is 0 or an integer of 1-5, m is 0 or 1, n is an integer of 1-5, p/q=2-16, each of R1-R3 is lower alkyl, R4 is H or lower alkyl, Z(-) is a halogen anion and a is an integer of 2-10). An electrolytic cell is divided into an anode chamber and a cathode chamber with the exchange membrane. An aq. soln. contg. metal ions is fed to the cathode chamber and an acid soln. contg. the same kind of anions as the aq. soln. in the cathode chamber is fed to the anode chamber.

公开(公告)号：JPS6326390A

公开(公告)日：1988-02-03

申请号：JP16777586

申请日：1986-07-18

Applicant: TOSOH CORP

Inventor： MORI TAKASHI ,  KURAUCHI YASUHIRO ,  FUKUDA KENICHI

IPC: C08J5/22 ,  B01J47/12 ,  C02F1/46 ,  C02F1/461 ,  C25B1/00 ,  C25B13/08

Abstract: PURPOSE:To efficiently change and control the valency of an aq. metal ion soln. by using a fluorine anion-exchange membrane having a specified structure produced by applying treatment with an acid or a base. CONSTITUTION:The valency of an aq. soln. of a metal ion capable of forming plural oxidation states is changed and controlled by anion-exchange membrane electrolysis. A membrane formed from a copolymer consisting of a repeating unit shown by the formula is treated with an acid or a base, and an anion- exchange group is introduced into the copolymer to obtain a fluorine carboxylic ester membrane which is used as the anion-exchange membrane in this case. In the formula, X is F or CF2, (l) is 0 or 1-5, (m) is 0 or 1, (n) is 1-5, p/q is 4-16, and R is an alkyl. Since the anion-exchange membrane has excellent durability and a metal ion is not leaked, the membrane is applicable to various processes, and the valency of the metal ion can be efficiently changed and controlled.

公开(公告)号：JPS62294193A

公开(公告)日：1987-12-21

申请号：JP13588986

申请日：1986-06-13

Applicant: TOSOH CORP

Inventor： FUKUDA KENICHI ,  MORI TAKASHI ,  KURAUCHI YASUHIRO

IPC: C08J5/22 ,  B01J47/00 ,  B01J47/12 ,  C08F214/26 ,  C25C7/04

Abstract: PURPOSE:To efficiently and stably recover a metal from waste liquor by recovering the metal with an anion exchange membrane contg. fluorine obtd. by treating a specified carboxylic ester film. CONSTITUTION:A metal is recovered form waste liquor discharged from a plating plant with an anion exchange membrane contg. fluorine. The membrane is obtd. by treating one side or both sides of a carboxylic ester film made of a copolymer having repeating units represented by formula I with an acid such as hydrochloric acid or a base such as an aqueous ammonia soln. and by introducing anion exchange groups into the film. In the formula I, X is F or CF3, l is 0 or an integer of 1-5, m is 0 or an integer of 1-5, n is an integer of 1-5, p/q=4-16 and R is alkyl. The anion exchange groups are quat. ammonium groups represented by formula II (where each of R1-R3 is lower alkyl, R1 and R2 may bond to each other to form a tetra-or pentamethylene chain and Z is a halogen anion, BF4 , SbCl6 or the like).

公开(公告)号：JPS62274086A

公开(公告)日：1987-11-28

申请号：JP11620886

申请日：1986-05-22

Applicant: TOSOH CORP

Inventor： MORI TAKASHI ,  DOI MASAHARU ,  FUKUDA KENICHI ,  KURANAI YASUHIRO

IPC: C25B3/00 ,  C25B9/00 ,  C25B9/08

Abstract: PURPOSE:To improve the durability of diaphragms in an electrolytic cell used to synthesize amino acid by an electrolytic ion substitution method and to develop an electrolytic anion substitution method by which superior efficiency is attained, by using F-contg. anion exchange membranes each having a specified structure as the diaphragms. CONSTITUTION:When amino acid is synthesized by an electrolytic anion substitution method using ion exchange membranes, an electrolytic cell 1 is divided into an anode chamber 6, an intermediate chamber 7 and a cathode chamber 8 with anion exchange membranes 2, 3, the anode 4 of Pt or the like and the cathode 5 of Fe or the like are placed in the anode and cathode chambers 6, 8, respectively, and hydrochloric acid and sodium hydroxide are fed to the anode and cathode chambers 6, 8, respectively. Electrolysis is then carried out at 50A/dm current density to obtain an amino acid soln. by the substitution of OH for Cl in the intermediate chamber 7. An F- contg. anion exchange membrane represented by formula I and having quat. ammonium groups represented by formula II or IV is used as the anion exchange membrane 2. An F-contg. anion exchange membrane represented by the formula I and having quat. ammonium groups represented by formula III is used as the anion exchange membrane 3.

公开(公告)号：JPH03122004A

公开(公告)日：1991-05-24

申请号：JP25713889

申请日：1989-10-03

Applicant: TOSOH CORP

Inventor： FUNAKOSHI HAJIME ,  FUKUDA KENICHI ,  MORI TAKASHI

IPC: C01B13/32 ,  C01G33/00

Abstract: PURPOSE:To obtain the title fine powder good in sinterability and excellent in its composition uniformity by bringing an anion exchange resin into contact with a solution in which metal compounds as the raw materials for the title powder have been dissolved, producing insoluble metal compounds and then by calcining the product. CONSTITUTION:(A) A solution in which at least two metal compounds (e.g. MgCl2.6H2O and NbCl5) have been dissolved is brought into contact with (B) an anion exchange resin (pref. OH for the anion) to form insoluble metal compounds. The amount of the anion exchange resin to be used should be at least equivalent to that necessary for producing said metal compounds (pref.>=1.2 times). From the resulting mixed solution, the anion exchange resin is separated using e.g. a mesh, and the product is collected through filtration, spray drying etc. from the liquid separated, being then calcined to obtain the objective multiple oxide powder.