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公开(公告)号：JPH01175994A
公开(公告)日：1989-07-12
申请号：JP32997087
申请日：1987-12-28
Applicant: TOSOH CORP
Inventor： KURAUCHI YASUHIRO , HARA KATSUYUKI , SAITO SHUJI
IPC: A23J3/00 , C07K1/34 , C07K14/435 , C25B3/00
Abstract: PURPOSE:To obtain the title hydrolyzed product useful for foods, etc., having low salt content, good emulsifiability, foamability and taste by partially hydrolyzing a protein in an alkaline aqueous solution, feeding into a central divided room in an electrolytic cell separated with cation-exchange membranes, charging with electricity, neutralizing and desalting. CONSTITUTION:A protein is partially hydrolyzed in an aqueous solution under an alkaline condition, the resultant alkaline protein solution is fed into a central divided room 7 in an electrolytic cell 1 comprising at least a cathode room 8, an anode room 6 and the central divided room 7 set between both the rooms and separated therefrom by plural cation-exchange membranes 2, 3, then an electrolytic aqueous solution is fed into the cathode room 8, an electrolytic aqueous solution containing proton is fed into the anode room 6, the electrolytic cell 1 is charged with electricity and proton is sent from the anode room 6 through the cation-exchange membrane 3 into the central room 7 and the alkaline protein solution is neutralized, and at the same time, inorganic cation therein is excluded to the cathode room 8 through the cation-exchange membrane 2 to give the aimed partially hydrolyzed product of protein.
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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.
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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
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.
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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).
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公开(公告)号：JPS63270487A
公开(公告)日：1988-11-08
申请号：JP10182287
申请日：1987-04-27
Applicant: TOSOH CORP
Inventor： KURAUCHI YASUHIRO , DOI MASAHARU , MORI TAKASHI , FUKUDA KENICHI
Abstract: PURPOSE:To efficiently carry out electrolytic anion substitution when anions are substd. for anions of a different kind in an aq. soln., by using a fluorine- contg. anion exchange membrane of a specified copolymer as an anion exchange membrane for the substitution. CONSTITUTION:A fluorine-contg. anion exchange membrane of a copolymer having repeating units represented by the formula is used as an anion exchange membrane for electrolysis with an ion exchange membrane. In the formula, 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, each of (p) and (q) is a positive number, p/q=2-16, each of R1-R3 is lower alkyl group, R1 and R2 may bond to each other to form a tetramethylene or pentamethylene chain, R4 is H atom or lower alkyl group, R3 and R4 may bond to each other to form an ethylene or trimethylene chain, Z is a negative ion and (a) is an integer of 2-10. The exchange capacity of the fluorine-contg. anion exchange membrane is regulated to about 0.1-3.0meq/g dry resin and the thickness to about 40-500mu.
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Patent Agency Ranking
公开(公告)号：JPS6342387A
公开(公告)日：1988-02-23
申请号：JP18418786
申请日：1986-08-07
Applicant: TOSOH CORP
Inventor： KURAUCHI YASUHIRO , MORI TAKASHI , FUKUDA KENICHI , DOI MASAHARU
Abstract: PURPOSE:To efficiently substitute anions in an aq. soln. by other kind of anions by feeding the soln. to an electrode chamber formed with anion exchange membranes contg. fluoride obtd. by treating membranes of carboxylic ester represented by a prescribed formula and by carrying out ion substitution. CONSTITUTION:Anion exchange groups are introduced into membranes of carboxylic ester 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=4-16 and R is alkyl) by acid or base treatment to obtain anion exchange membranes 2, 3 contg. fluorine. An aq. soln. contg. anions is fed to an electrode chamber formed with the exchange membranes 2, 3 and electrolytic ion substitution is carried out to substitute the anions in the soln. by other kind of anions.
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公开(公告)号：JPS6342385A
公开(公告)日：1988-02-23
申请号：JP18418686
申请日：1986-08-07
Applicant: TOSOH CORP
Inventor： MORI TAKASHI , FUKUDA KENICHI , KURAUCHI YASUHIRO
Abstract: PURPOSE:To efficiently control a change of the valence of metal ions capable of producing plural kinds of oxidized state by feeding an aq. soln. contg. the metal ions to an electrode chamber formed with an anion exchange membrane contg. fluorine represented by a prescribed formula and by oxidizing or reducing the soln. CONSTITUTION:An anion exchange membrane 2 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/g=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 1 is divided into an anode chamber 6 and a cathode chamber 5 with the exchange membrane 2. An aq. soln. contg. metal ions capable of producing plural kinds of oxidized state is fed to the cathode chamber 5, where the soln. is electrochemically oxidized or reduced.
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公开(公告)号：JPS6442590A
公开(公告)日：1989-02-14
申请号：JP19777587
申请日：1987-08-07
Applicant: AGENCY IND SCIENCE TECHN , TOSOH CORP
Inventor： TAKENAKA HIROYASU , UEHARA HITOSHI , KAWAMI YOJI , KURAUCHI YASUHIRO , FUKUDA KENICHI , KIYOTA TORU
Abstract: PURPOSE:To remarkably lower an electric resistance and to improve productivity by fixing a cation-exchange membrane to one side of an anode on the cathode side, and bringing the other side of the anode into contact with water. CONSTITUTION:Oxygen is electrochemically reduced on the surface of the cathode 25 in an electrolytic cell provided with the cation-exchange membrane 23 to form HO2 , and a peroxide expressed by MHO2 is produced (M is an alkali metal or hydrogen). In this production device, the cation-exchange membrane is fixed to one side of the anode 21 on the cathode 25 side, and the other side of the anode 21 is brought into contact with water 27, namely, the water 27, anode 21, cation-exchange membrane 23, aq. alkaline soln. 24, cathode 25 consisting of a gas diffuser electrode, and oxygen 26 are successively arranged in the electrolytic cell, and a mixture of the hydrogen peroxide of an alkali metal and hydrogen peroxide is produced by using the cell. By this method, the cell voltage is remarkably lowered, and the current density can be increased.
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公开(公告)号：JPS6311684A
公开(公告)日：1988-01-19
申请号：JP15400086
申请日：1986-07-02
Applicant: TOSOH CORP
Inventor： KURAUCHI YASUHIRO , MORI TAKASHI , DOI MASAHARU , FUKUDA KENICHI
IPC: C25B1/00
Abstract: PURPOSE:To improve the efficiency of electrolytic ion subsn. by dividing an electrolytic chamber by fluorine cation exchange membranes consisting of two layers which consist of a copolymer having the repeating unit expressed by the general formula and have different exchange group densities and executing an electrolysis. CONSTITUTION:The fluorine cation exchange membranes consisting of the two layers which consist of the copolymer having the repeating unit expressed by the formula (where, X: F or CF3, l; 0 or 1-5 integer, m; 0 or 1, n; 1-5 integer, p, q are positive numbers and the ratio p/q; 2-16, Y: quaternary ammonium group) and have the different exchange group densities are prepd. An aq. soln. contg. ions such as, for example, hydrochloric acid soln. of an amino acid (AA) is supplied into such 3-chamber type electrolytic cell 1 divided by the exchange membranes 2, 3. The anion species (for example, Cl ) in the aq. soln. is substd. with the other anion species (for example, OH ) by an ion exchange electrolysis method, by which the amino acid is finally obtd.
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公开(公告)号：JPS62294189A
公开(公告)日：1987-12-21
申请号：JP13589086
申请日：1986-06-13
Applicant: TOSOH CORP
Inventor： FUKUDA KENICHI , MORI TAKASHI , KURAUCHI YASUHIRO , DOI MASAHARU
Abstract: PURPOSE:To efficiently and stably recover a metal from waste liquor by recovering the metal as a metal salt with an anion exchange membrane contg. fluorine obtd. by treating a specified carboxylic film. CONSTITUTION:A metal is recovered as a metal salt from waste liquor discharged from a metal handling 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 1, 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).
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